SherbyNet - /page/wikibook/entry.mu

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</style><table class="infobox vevent"><tbody><tr><th colspan="2" class="infobox-above summary">id Tech 6</th></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Programmer" title="Programmer">Developer(s)</a></th><td class="infobox-data"><a href="Id_Software" title="Id Software">id Software</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Written in</th><td class="infobox-data"><a href="C%2B%2B" title="C++">C++</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Computing_platform" title="Computing platform">Platform</a></th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">

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</style><div class="plainlist"><ul><li><a href="Microsoft_Windows" title="Microsoft Windows">Microsoft Windows</a></li><li><a href="PlayStation_4" title="PlayStation 4">PlayStation 4</a></li><li><a href="Xbox_One" title="Xbox One">Xbox One</a></li><li><a href="Nintendo_Switch" title="Nintendo Switch">Nintendo Switch</a></li><li><a href="Google_Stadia" title="Google Stadia">Stadia</a></li></ul></div></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Predecessor</th><td class="infobox-data"><a href="Id_Tech_5" title="Id Tech 5">id Tech 5</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Successor</th><td class="infobox-data"><a href="Id_Tech_7" title="Id Tech 7">id Tech 7</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Software_license" title="Software license">License</a></th><td class="infobox-data"><a href="Proprietary_software" title="Proprietary software">Proprietary</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Website</th><td class="infobox-data"><span class="url"><a rel="nofollow" class="external text" href="http://idsoftware.com">idsoftware<wbr>.com</a></span></td></tr></tbody></table>

<p><b>id Tech 6</b> is a multiplatform <a href="Game_engine" title="Game engine">game engine</a> developed by <a href="Id_Software" title="Id Software">id Software</a>. It is the successor to <a href="Id_Tech_5" title="Id Tech 5">id Tech 5</a> and was first used to create the 2016 video game <i><a href="Doom_(2016_video_game)" title="Doom (2016 video game)">Doom</a></i>. Internally, the development team also used the codename <i>id Tech 666</i> to refer to the engine.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> The PC version of the engine is based on <a href="Vulkan_(API)" class="mw-redirect" title="Vulkan (API)">Vulkan</a> API and <a href="OpenGL" title="OpenGL">OpenGL</a> API.

</p><p><a href="John_Carmack" title="John Carmack">John Carmack</a> started talking about his vision regarding the engine that would succeed <a href="Id_Tech_5" title="Id Tech 5">id Tech 5</a> several years before the latter debuted in <i><a href="Rage_(video_game)" title="Rage (video game)">Rage</a></i>, but following his departure from id Software in 2014, Tiago Sousa was hired to replace him as the lead renderer programmer at the company.

</p><p>On June 24, 2009, id Software was acquired by <a href="ZeniMax_Media" title="ZeniMax Media">ZeniMax Media</a>. It was later announced in 2010 that id Software's technology would be available only to other companies also belonging to ZeniMax Media.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> It was followed up by <a href="Id_Tech_7" title="Id Tech 7">id Tech 7</a>.

</p>

<div class="mw-heading mw-heading2"><h2 id="Preliminary_information">Preliminary information</h2></div>

<p>In 2008 and while id Tech 5 had yet to be fully formed, John Carmack said the next engine by id Software would be looking towards a direction where <a href="Ray_tracing_(graphics)" title="Ray tracing (graphics)">ray tracing</a> and classic <a href="Raster_graphics" title="Raster graphics">raster graphics</a> would be mixed.<sup id="cite_ref-pcper_3-0" class="reference"><a href="#cite_note-pcper-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> The engine would work by raycasting the geometry represented by <a href="Voxel" title="Voxel">voxels</a> (instead of triangles) stored in an <a href="Octree" title="Octree">octree</a>.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> Carmack claimed that this format would also be a more efficient way to store the 2D data as well as the 3D geometry data, because of not having packing and bordering issues.<sup id="cite_ref-pcper_3-1" class="reference"><a href="#cite_note-pcper-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> The goal of the engine would be to virtualize geometry the same way that id Tech 5 virtualized textures.<sup id="cite_ref-E3_2008_5-0" class="reference"><a href="#cite_note-E3_2008-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> This would be a change from past engines which for the most part use mesh-based systems. However, he also explained during <a href="QuakeCon" title="QuakeCon">QuakeCon 08</a>, that the hardware that would be capable of id Tech 6 did not yet exist at the time.<sup id="cite_ref-carmack_7-0" class="reference"><a href="#cite_note-carmack-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>

</p><p>In July 2011, Carmack explained that id Software was beginning research for the development of id Tech 6.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> It's unknown if Carmack's vision of the engine at the time was still the same he described in 2008.

</p><p>Eventually, the plans for a rendering approach with voxel-based raycasting were abandoned in favor of conventional mesh-based rasterization.

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<div class="mw-heading mw-heading2"><h2 id="Technology">Technology</h2></div>

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<p>An early version of the fourth main <i>Doom</i> game was being built on id Tech 5 but id Software restarted development in late 2011 to early 2012, after <a href="Bethesda_Game_Studios" title="Bethesda Game Studios">Bethesda</a> expressed concerns about its creative and technological direction. When development was restarted it was decided to begin with the id Tech 5-based <i>Rage</i> codebase but take "big leaps back in certain areas of tech" and "[merge] Doom features to Rage".<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup>

</p><p><i>Doom</i> was first shown to the public during <a href="QuakeCon_2014" class="mw-redirect" title="QuakeCon 2014">QuakeCon 2014</a>, where it was confirmed it was running on an early version of id Tech 6.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> The developers' goals when creating the engine were described as being able to drive good looking games running at 1080p on 60 fps but also reintroduce real-time dynamic lighting which was largely removed from id Tech 5.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> The engine still uses virtual textures (dubbed <a href="Id_Tech_4#MegaTexture_rendering_technology" title="Id Tech 4">"MegaTextures"</a> in id Tech 4 and 5) but they are of higher quality and no longer restrict the appearance of realtime lighting and shadows.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-venturebeat_13-0" class="reference"><a href="#cite_note-venturebeat-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> <a href="Physically_based_rendering" title="Physically based rendering">Physically based rendering</a> has also been confirmed.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> A technical analysis of <i>Doom</i> found that the engine supports <a href="Motion_blur" class="mw-redirect" title="Motion blur">motion blur</a>, <a href="Bokeh" title="Bokeh">bokeh</a> <a href="Depth_of_field" title="Depth of field">depth of field</a>, <a href="HDR_bloom" class="mw-redirect" title="HDR bloom">HDR bloom</a>, <a href="Shadow_mapping" title="Shadow mapping">shadow mapping</a>, lightmaps, irradiance volumes, <a href="Image-based_lighting" title="Image-based lighting">image-based lighting</a>, <a href="FXAA" class="mw-redirect" title="FXAA">FXAA</a>, <a href="Volumetric_lighting" title="Volumetric lighting">volumetric lighting</a>/smoke, <a href="Destructible_environment" title="Destructible environment">destructible environments</a>, water physics, skin <a href="Sub-surface_scattering" class="mw-redirect" title="Sub-surface scattering">sub-surface scattering</a>, <a href="Morphological_antialiasing" title="Morphological antialiasing">SMAA</a> and <a href="Temporal_anti-aliasing" title="Temporal anti-aliasing">TSSAA</a> <a href="Anti-aliasing_filter" title="Anti-aliasing filter">anti-aliasing</a>, <a href="Glossary_of_computer_graphics#screen_space_directional_occlusion" title="Glossary of computer graphics">directional occlusion</a>, <a href="Video_post-processing#Uses_in_3D_rendering" title="Video post-processing">screen space</a> <a href="Reflection_(computer_graphics)" title="Reflection (computer graphics)">reflections</a>, <a href="Normal_mapping" title="Normal mapping">normal maps</a>, GPU accelerated <a href="Particle_system" title="Particle system">particles</a> which are correctly lit and shadowed, triple buffer v-sync which acts like fast sync, unified volumetric fog (every light, shadow, indirect lighting affects it, including water caustics / underwater light scattering), tessellated water surface (on the fly without GPU <a href="Tessellation_(computer_graphics)" title="Tessellation (computer graphics)">tessellation</a>. <a href="Caustic_(optics)" title="Caustic (optics)">Caustics</a> are dynamically generated and derived from water surface), and <a href="Chromatic_aberration" title="Chromatic aberration">chromatic aberration</a>.<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> On July 11, 2016, id Software released an update for the game that added support for Vulkan.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup>

</p><p>Following Carmack's departure from id Software, Tiago Sousa, who had worked as the lead R&D graphics engineer of several versions of the <a href="CryEngine" title="CryEngine">CryEngine</a> at <a href="Crytek" title="Crytek">Crytek</a>, was hired to lead development of the rendering.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> Bethesda's Pete Hines has commented that while id Tech 6 reuses code written by Carmack, most of the decisions made about the engine's direction were taken after he left.<sup id="cite_ref-venturebeat_13-1" class="reference"><a href="#cite_note-venturebeat-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup>

</p>

<div class="mw-heading mw-heading2"><h2 id="Games_using_id_Tech_6">Games using id Tech 6</h2></div>

</caption>

<th>Year

</th>

<th>Title

</th>

<th>Developer

</th></tr>

<tr>

<td>2016

</td>

</td>

<td><a href="Id_Software" title="Id Software">Id Software</a>

</td></tr>

<tr>

<td rowspan="2">2017

</td>

<td><i><a href="Wolfenstein_II%3A_The_New_Colossus" title="Wolfenstein II: The New Colossus">Wolfenstein II: The New Colossus</a></i>

</td>

<td><a href="MachineGames" title="MachineGames">MachineGames</a>

</td></tr>

<tr>

</td>

<td>id Software

</td></tr>

<tr>

<td rowspan="2">2019

</td>

<td><i><a href="Wolfenstein%3A_Youngblood" title="Wolfenstein: Youngblood">Wolfenstein: Youngblood</a></i>

</td>

<td rowspan="2">MachineGames<br><a href="Arkane_Studios" title="Arkane Studios">Arkane Studios</a>

</td></tr>

<tr>

<td><i><a href="Wolfenstein%3A_Cyberpilot" title="Wolfenstein: Cyberpilot">Wolfenstein: Cyberpilot</a></i>

</td></tr></tbody></table>

<ul><li><a href="First-person_shooter_engine" title="First-person shooter engine">First-person shooter engine</a></li>

<li><a href="List_of_game_engines" title="List of game engines">List of game engines</a></li>

<li><a href="List_of_first-person_shooter_engines" title="List of first-person shooter engines">List of first-person shooter engines</a></li></ul>

<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>

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</style><cite id="CITEREFMcElroy2014" class="citation web cs1">McElroy, Griffin (July 17, 2014). <a rel="nofollow" class="external text" href="http://www.polygon.com/2014/7/17/5913883/doom-4-quakecon-reveal">"The new Doom game is just titled 'Doom,' runs on id Tech 6, and more details"</a>. <i><a href="Polygon_(website)" title="Polygon (website)">Polygon</a></i><span class="reference-accessdate">. Retrieved <span class="nowrap">May 18,</span> 2016</span>.</cite></span>

</li>

<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><cite id="CITEREFGraft2010" class="citation web cs1">Graft, Kris (August 13, 2010). <a rel="nofollow" class="external text" href="https://www.gamedeveloper.com/programming/id-tech-5-i-rage-i-engine-no-longer-up-for-external-licensing">"id Tech 5 Rage Engine No Longer Up For External Licensing"</a>. <i><a href="Gamasutra" class="mw-redirect" title="Gamasutra">Gamasutra</a></i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100816103142/http://www.gamasutra.com/view/news/29886/id_Tech_5_Rage_Engine_No_Longer_Up_For_External_Licensing.php">Archived</a> from the original on August 16, 2010<span class="reference-accessdate">. Retrieved <span class="nowrap">September 27,</span> 2017</span>.</cite></span>

</li>

<li id="cite_note-pcper-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-pcper_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-pcper_3-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFShrout2008" class="citation web cs1">Shrout, Ryan (March 12, 2008). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20161001211747/http://www.pcper.com/reviews/Graphics-Cards/John-Carmack-id-Tech-6-Ray-Tracing-Consoles-Physics-and-more">"John Carmack on id Tech 6, Ray Tracing, Consoles, Physics and more"</a>. <i>PC Perspective</i>. Archived from <a rel="nofollow" class="external text" href="http://www.pcper.com/reviews/Graphics-Cards/John-Carmack-id-Tech-6-Ray-Tracing-Consoles-Physics-and-more">the original</a> on October 1, 2016. <q>What John does see ray tracing useful for is a very specific data model he has created called "sparse voxel octrees" that allow him to store immense amounts of data in a fashion that is easily accessed using ray tracing methods(...) This new data model and algorithm being worked on for id Tech 6 would allow, according to John, nearly infinite amounts of geometric detail in the world without the problems seen with tessellation engines or trying to store gigabytes of data locally</q></cite></span>

</li>

<li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><cite id="CITEREFOlick2008" class="citation web cs1">Olick, Jon (2008). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120301073410/http://s08.idav.ucdavis.edu/olick-current-and-next-generation-parallelism-in-games.pdf">"Current Generation Parallelism In Games"</a> <span class="cs1-format">(PDF)</span>. <i><a href="UC_Davis" class="mw-redirect" title="UC Davis">UC Davis</a></i>. <a href="Id_Software" title="Id Software">id Software</a>. Archived from <a rel="nofollow" class="external text" href="http://s08.idav.ucdavis.edu/olick-current-and-next-generation-parallelism-in-games.pdf">the original</a> <span class="cs1-format">(PDF)</span> on March 1, 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">November 12,</span> 2010</span>.</cite></span>

</li>

<li id="cite_note-E3_2008-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-E3_2008_5-0">^</a></b></span> <span class="reference-text"><cite id="CITEREFSmith2008" class="citation web cs1">Smith, Will (July 15, 2008). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20080717040310/http://www.maximumpc.com/article/features/e3_2008_the_john_carmack_interview_rage_id_tech_6_doom_4_details_and_more">"E3 2008: The John Carmack Interview. Rage, id Tech 6, Doom 4 Details, and More!"</a>. <i><a href="Maximum_PC" title="Maximum PC">Maximum PC</a></i>. Archived from <a rel="nofollow" class="external text" href="http://www.maximumpc.com/article/features/e3_2008_the_john_carmack_interview_rage_id_tech_6_doom_4_details_and_more?page=0%2C1">the original</a> on July 17, 2008. <q>I still think there's one more generation to be had where we virtualize geometry with id Tech 6 and do some things that are truly revolutionary. (...) I know we can deliver a next-gen kick, if we can virtualize the geometry like we virtualized the textures; we can do things that no one's ever seen in games before.</q></cite></span>

</li>

<li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><cite id="CITEREFShrout2008" class="citation web cs1">Shrout, Ryan (March 12, 2008). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100314045408/http://www.pcper.com/article.php?aid=532">"John Carmack on id Tech 6, Ray Tracing, Consoles, Physics and more"</a>. <i>PC Perspective</i>. Archived from <a rel="nofollow" class="external text" href="http://www.pcper.com/article.php?aid=532">the original</a> on March 14, 2010<span class="reference-accessdate">. Retrieved <span class="nowrap">January 3,</span> 2010</span>. <q>This new data model and algorithm being worked on for id Tech 6 would allow, according to John, nearly infinite amounts of geometric detail in the world without the problems seen with tessellation engines or trying to store gigabytes of data locally.</q></cite></span>

</li>

<li id="cite_note-carmack-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-carmack_7-0">^</a></b></span> <span class="reference-text"><cite id="CITEREFChan2008" class="citation web cs1">Chan, Norman (July 31, 2008). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100128095058/http://www.maximumpc.com/article/news/quakecon_08_id_tech_6_will_utilize_hardware_that_doesnt_exist_right_now_nextgen_will_still_be_polygonbased">"QuakeCon 08: id Tech 6 Will Utilize Hardware That 'Doesn't Exist Right Now'; Next-Gen Will Still Be Polygon-Based"</a>. <i><a href="Maximum_PC" title="Maximum PC">Maximum PC</a></i>. Archived from <a rel="nofollow" class="external text" href="http://www.maximumpc.com/article/news/quakecon_08_id_tech_6_will_utilize_hardware_that_doesnt_exist_right_now_nextgen_will_still_be_polygonbased">the original</a> on January 28, 2010. <q>id Tech 6, for example, probably won't be coded in Java or any protected language. It also will be designed for hardware that doesn't exist right now. With new discrete graphics players entering the field (Larrabee, Fusion, etc), Carmack knows that the PC space is relevant, and that's where he'll be looking when thinking about coding his next engine.</q></cite></span>

</li>

<li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><cite id="CITEREFBrightman2011" class="citation web cs1">Brightman, James (July 27, 2011). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120318084428/http://www.industrygamers.com/news/doom-creator-more-excited-about-games-now-than-ever//article.php?aid=532">"Doom Creator More Excited About Games Now Than Ever"</a>. IndustryGamers. Archived from <a rel="nofollow" class="external text" href="http://www.industrygamers.com/news/doom-creator-more-excited-about-games-now-than-ever//article.php?aid=532">the original</a> on March 18, 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">August 1,</span> 2011</span>. <q>'And we're in research for id Tech 6 graphics, content development…yeah, I'm super busy,' he said.</q></cite></span>

</li>

<li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><cite id="CITEREFSchreier2013" class="citation web cs1">Schreier, Jason (April 3, 2013). <a rel="nofollow" class="external text" href="https://kotaku.com/five-years-and-nothing-to-show-how-doom-4-got-off-trac-468097062">"Five Years And Nothing To Show: How Doom 4 Got Off Track"</a>. <i><a href="Kotaku" title="Kotaku">Kotaku</a></i>. Gawker Media<span class="reference-accessdate">. Retrieved <span class="nowrap">May 18,</span> 2016</span>.</cite></span>

</li>

<li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=R6itJ19T99c">"Powering DOOM with id Tech 6"</a>. <a href="Bethesda_Softworks" title="Bethesda Softworks">Bethesda Softworks</a>. September 1, 2015<span class="reference-accessdate">. Retrieved <span class="nowrap">February 12,</span> 2022</span> – via <a href="YouTube" title="YouTube">YouTube</a>.</cite></span>

</li>

<li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><cite id="CITEREFBishop2015" class="citation web cs1">Bishop, Samantha (September 5, 2015). <a rel="nofollow" class="external text" href="http://www.gamezone.com/news/doom-debuts-the-new-id-tech-6-engine-3424473">"Doom debuts the new id Tech 6 engine"</a>. <i>GameZone</i><span class="reference-accessdate">. Retrieved <span class="nowrap">May 18,</span> 2016</span>.</cite></span>

</li>

<li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><cite class="citation audio-visual cs1"><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=la0O0SyM3gg"><i>Doom Tech Analysis: The Best-Looking 60fps Console Shooter?</i></a>. <a href="Digital_Foundry" class="mw-redirect" title="Digital Foundry">Digital Foundry</a>. May 18, 2016. <a rel="nofollow" class="external text" href="https://ghostarchive.org/varchive/youtube/20211220/la0O0SyM3gg">Archived</a> from the original on December 20, 2021<span class="reference-accessdate">. Retrieved <span class="nowrap">May 18,</span> 2016</span> – via <a href="YouTube" title="YouTube">YouTube</a>.</cite></span>

</li>

<li id="cite_note-venturebeat-13"><span class="mw-cite-backlink">^ <a href="#cite_ref-venturebeat_13-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-venturebeat_13-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFTakahashi2015" class="citation web cs1">Takahashi, Dean (June 17, 2015). <a rel="nofollow" class="external text" href="https://venturebeat.com/2015/06/17/bethesda-wins-the-attention-war-by-breaking-the-game-marketing-rules-for-doom-fallout-4/view-all/">"Bethesda wins the attention war by blasting marketing rules for Doom, Fallout 4"</a>. <i><a href="VentureBeat" title="VentureBeat">VentureBeat</a></i><span class="reference-accessdate">. Retrieved <span class="nowrap">May 18,</span> 2016</span>.</cite></span>

</li>

<li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><cite id="CITEREFPalumbo2015" class="citation web cs1">Palumbo, Alessio (September 2, 2015). <a rel="nofollow" class="external text" href="http://wccftech.com/take-a-look-at-dooms-id-tech-6-in-this-video-interview/">"Take A Look At DOOM's id Tech 6 In This Video Interview"</a>. <i>WCCFtech</i><span class="reference-accessdate">. Retrieved <span class="nowrap">February 19,</span> 2016</span>.</cite></span>

</li>

<li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text"><cite id="CITEREFLinneman2016" class="citation web cs1">Linneman, John (May 21, 2016). <a rel="nofollow" class="external text" href="http://www.eurogamer.net/articles/digitalfoundry-2016-doom-face-off">"Face-Off: Doom"</a>. <i><a href="Eurogamer" title="Eurogamer">Eurogamer</a></i><span class="reference-accessdate">. Retrieved <span class="nowrap">June 11,</span> 2016</span>.</cite></span>

</li>

<li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text"><cite id="CITEREFDuffy2016" class="citation web cs1">Duffy, Robert (July 11, 2016). <a rel="nofollow" class="external text" href="https://bethesda.net/en/article/1By8XypnlaCqmmIWqAcOgm/doom-vulkan-support-now-live">"DOOM – Vulkan Support Now Live"</a>. <i>Bethesda.net</i><span class="reference-accessdate">. Retrieved <span class="nowrap">July 11,</span> 2016</span>.</cite></span>

</li>

<li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.pcper.com/news/General-Tech/John-Carmacks-Replacement-id-Tiago-Sousa-Crytek">"John Carmack's Replacement at id: Tiago Sousa (Crytek)"</a>. <i>pcper.com</i>. July 19, 2014<span class="reference-accessdate">. Retrieved <span class="nowrap">May 18,</span> 2016</span>.</cite></span>

</li>

<li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><cite id="CITEREFidSoftwareTiago2014" class="citation web cs1">@idSoftwareTiago (July 18, 2014). <a rel="nofollow" class="external text" href="https://x.com/idSoftwareTiago/status/490177133180760064">"Happy to announce i'll be helping the amazingly talented id Software team with Doom and idTech 6. Very excited :)"</a> (<a href="Tweet_(social_media)" title="Tweet (social media)">Tweet</a>)<span class="reference-accessdate">. Retrieved <span class="nowrap">May 18,</span> 2016</span> – via <a href="Twitter" title="Twitter">Twitter</a>.</cite></span>

</li>

<li id="cite_note-quakecon14-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-quakecon14_19-0">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.vg247.com/2014/07/18/doom-4-details-quakecon-2014-reboot/">"Why id Software is calling it 'Doom' and not 'Doom 4'"</a>. <i><a href="VG247" class="mw-redirect" title="VG247">VG247</a></i>. July 18, 2014.</cite></span>

</li>

</ol></div></div>

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</style><div id="id_Software_(games)127" style="font-size:114%;margin:0 4em"><a href="Id_Software" title="Id Software">id Software</a> (<a href="List_of_id_Software_games" title="List of id Software games">games</a>)</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Main franchises</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><i><a href="Commander_Keen" title="Commander Keen">Commander Keen</a></i></li>

<li><i><a href="Quake_(series)" title="Quake (series)">Quake</a></i></li>

<li><i><a href="Wolfenstein" title="Wolfenstein">Wolfenstein</a></i></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other games</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><i><a href="Shadow_Knights" title="Shadow Knights">Shadow Knights</a></i></li>

<li><i><a href="Hovertank_One" title="Hovertank One">Hovertank One</a></i></li>

<li><i><a href="Dangerous_Dave" title="Dangerous Dave">Dangerous Dave</a></i></li>

<li><i><a href="Rescue_Rover" title="Rescue Rover">Rescue Rover</a></i></li>

<li><i><a href="Tiles_of_the_Dragon" title="Tiles of the Dragon">Tiles of the Dragon</a></i></li>

<li><i><a href="Catacomb_3-D" title="Catacomb 3-D">Catacomb 3-D</a></i></li>

<li><i><a href="Orcs_%26_Elves" title="Orcs & Elves">Orcs & Elves</a></i></li>

<ul><li><i><a href="Rage%3A_Mutant_Bash_TV" title="Rage: Mutant Bash TV">Mutant Bash TV</a></i></li></ul></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Games published</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><i><a href="Heretic_(video_game)" title="Heretic (video game)">Heretic</a></i></li>

<li><i><a href="Hexen%3A_Beyond_Heretic" title="Hexen: Beyond Heretic">Hexen: Beyond Heretic</a></i></li>

<li><i><a href="Hexen_II" title="Hexen II">Hexen II</a></i></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">People</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Current</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Kevin_Cloud" title="Kevin Cloud">Kevin Cloud</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Former</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Michael_Abrash" title="Michael Abrash">Michael Abrash</a></li>

<li><a href="Timothee_Besset" title="Timothee Besset">Timothee Besset</a></li>

<li><a href="Adrian_Carmack" title="Adrian Carmack">Adrian Carmack</a></li>

<li><a href="John_Carmack" title="John Carmack">John Carmack</a></li>

<li><a href="Matthew_Costello" title="Matthew Costello">Matthew Costello</a></li>

<li><a href="Graeme_Devine" title="Graeme Devine">Graeme Devine</a></li>

<li><a href="Robert_Duffy_(programmer)" title="Robert Duffy (programmer)">Robert Duffy</a></li>

<li><a href="Todd_Hollenshead" title="Todd Hollenshead">Todd Hollenshead</a></li>

<li><a href="Jennell_Jaquays" title="Jennell Jaquays">Jennell Jaquays</a></li>

<li><a href="Katherine_Anna_Kang" title="Katherine Anna Kang">Katherine Anna Kang</a></li>

<li><a href="American_McGee" title="American McGee">American McGee</a></li>

<li><a href="Sandy_Petersen" title="Sandy Petersen">Sandy Petersen</a></li>

<li><a href="John_Romero" title="John Romero">John Romero</a></li>

<li><a href="Dave_Taylor_(game_programmer)" title="Dave Taylor (game programmer)">Dave Taylor</a></li>

<li><a href="Tim_Willits" title="Tim Willits">Tim Willits</a></li>

<li><a href="Mike_Wilson_(executive)" title="Mike Wilson (executive)">Mike Wilson</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Publishers</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Softdisk" title="Softdisk">Softdisk</a></li>

<li><a href="3D_Realms" title="3D Realms">Apogee Software</a></li>

<li><a href="FormGen" title="FormGen">FormGen</a></li>

<li><a href="GT_Interactive" class="mw-redirect" title="GT Interactive">GT Interactive</a></li>

<li><a href="Activision" title="Activision">Activision</a></li>

<li><a href="ZeniMax_Media" title="ZeniMax Media">ZeniMax Media</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Technology</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Adaptive_tile_refresh" title="Adaptive tile refresh">Adaptive tile refresh</a></li>

<ul><li><a href="Doom_engine" title="Doom engine"><i>Doom</i> engine</a></li>

<li><a href="Quake_engine" title="Quake engine"><i>Quake</i> engine</a></li>

<li><a href="Quake_II_engine" title="Quake II engine"><i>Quake II</i> engine</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="QuakeCon" title="QuakeCon">QuakeCon</a></li>

<li><i><a href="Masters_of_Doom" title="Masters of Doom">Masters of Doom</a></i></li></ul>

</div></td></tr></tbody></table></div>

<div class="navbox-styles"></div><div role="navigation" class="navbox" aria-labelledby="Doom_franchise227" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Doom_franchise227" style="font-size:114%;margin:0 4em"><a href="Doom_(franchise)" title="Doom (franchise)"><i>Doom</i> franchise</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Main series</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><i><a href="Doom_(1993_video_game)" title="Doom (1993 video game)">Doom</a></i> (1993)

<ul><li><a href="Development_of_Doom" title="Development of Doom">development</a></li>

<li><a href="List_of_Doom_ports" title="List of Doom ports">ports</a></li></ul></li>

<li><i><a href="Final_Doom" title="Final Doom">Final Doom</a></i></li>

<ul><li><i><a href="Doom_3%3A_Resurrection_of_Evil" title="Doom 3: Resurrection of Evil">Resurrection of Evil</a></i></li>

<li><i><a href="Doom_3%3A_BFG_Edition" class="mw-redirect" title="Doom 3: BFG Edition">BFG Edition</a></i></li></ul></li>

<li><i><a href="Doom_Eternal" title="Doom Eternal">Eternal</a></i></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Spin-offs</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><i><a href="Doom_Resurrection" title="Doom Resurrection">Resurrection</a></i></li>

<li><i><a href="Mighty_Doom" title="Mighty Doom">Mighty Doom</a></i></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other media</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Novels</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Doom_(novel_series)" class="mw-redirect" title="Doom (novel series)"><i>Doom</i> novels</a></li>

<li><i><a href="Doom_3%3A_Worlds_on_Fire" title="Doom 3: Worlds on Fire">3: Worlds on Fire</a></i></li>

<li><i><a href="Doom_3%3A_Maelstrom" title="Doom 3: Maelstrom">3: Maelstrom</a></i></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Films</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><i><a href="Doom%3A_Annihilation" title="Doom: Annihilation">Annihilation</a></i></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><i><a href="Masters_of_Doom" title="Masters of Doom">Masters of Doom</a></i></li>

<li><i><a href="Doom%3A_The_Boardgame" title="Doom: The Boardgame">The Boardgame</a></i></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Universe</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Doomguy" title="Doomguy">Doomguy</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Technology</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Doom_engine" title="Doom engine"><i>Doom</i> engine</a></li>

<li><a href="Binary_space_partitioning" title="Binary space partitioning">Binary space partitioning</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Mods</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Doom_modding" title="Doom modding"><i>Doom</i> & <br> <i>Doom II</i></a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><i><a href="Bloom_(mod)" title="Bloom (mod)">Bloom</a></i></li>

<li><i><a href="Brutal_Doom" title="Brutal Doom">Brutal Doom</a></i></li>

<li><i><a href="Fallout%3A_Bakersfield" title="Fallout: Bakersfield">Fallout: Bakersfield</a></i></li>

<li><i><a href="Grezzo_2" title="Grezzo 2">Grezzo 2</a></i></li>

<li><i><a href="Marine_Doom" title="Marine Doom">Marine Doom</a></i></li>

<li><i><a href="MyHouse.wad" title="MyHouse.wad">MyHouse.wad</a></i></li>

<li><i><a href="Sigil_(mod)" title="Sigil (mod)">Sigil</a></i></li>

<li><i><a href="Thatcher's_Techbase" title="Thatcher's Techbase">Thatcher's Techbase</a></i></li>

<li><i><a href="Sonic_Robo_Blast_2" title="Sonic Robo Blast 2">Sonic Robo Blast 2</a></i></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><i>Doom 3</i></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Companies</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Id_Software" title="Id Software">id Software</a></li>

<li><a href="Midway_Games" title="Midway Games">Midway Games</a></li>

<li><a href="Nightdive_Studios" title="Nightdive Studios">Nightdive Studios</a></li>

<li><a href="Nerve_Software" title="Nerve Software">Nerve Software</a></li>

<li><a href="TeamTNT" title="TeamTNT">TeamTNT</a></li>

<li><a href="Bethesda_Game_Studios_Dallas" class="mw-redirect" title="Bethesda Game Studios Dallas">Bethesda Game Studios Dallas</a></li>

<li><a href="Romero_Games" title="Romero Games">Romero Games</a></li>

<li><a href="Art_Data_Interactive" title="Art Data Interactive">Art Data Interactive</a></li>

<li><a href="Alpha_Dog_Games" class="mw-redirect" title="Alpha Dog Games">Alpha Dog Games</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><i><a href="Doomed_Love" title="Doomed Love">Doomed Love</a></i></li>

<li><a href="Cacowards" title="Cacowards">Cacowards</a></li>

<li><a href="QuakeCon" title="QuakeCon">QuakeCon</a></li>

<li><a href="Gravity_gun" title="Gravity gun">Gravity gun</a></li>

<li><i><a href="Quake_III_Arena" title="Quake III Arena">Quake III Arena</a></i></li>

<li><i><a href="Quake_Champions" title="Quake Champions">Quake Champions</a></i></li>

<li><i><a href="Tony_Hawk's_Pro_Skater_3" title="Tony Hawk's Pro Skater 3">Tony Hawk's Pro Skater 3</a></i></li>

<li><i><a href="Super_Smash_Bros._Ultimate" title="Super Smash Bros. Ultimate">Super Smash Bros. Ultimate</a></i></li>

<li><i><a href="Fortnite" title="Fortnite">Fortnite</a></i></li>

<li><i><a href="Heretic_(video_game)" title="Heretic (video game)">Heretic</a></i></li>

<li><i><a href="Hexen%3A_Beyond_Heretic" title="Hexen: Beyond Heretic">Hexen: Beyond Heretic</a></i></li>

<li><i><a href="Strife_(1996_video_game)" title="Strife (1996 video game)">Strife</a></i></li>

<li><i><a href="Tony_Hawk's_Pro_Skater_3_%2B_4" title="Tony Hawk's Pro Skater 3 + 4">Tony Hawk's Pro Skater 3 + 4</a></i></li></ul>

</div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div>

<ul><li><span class="noviewer" typeof="mw:File"><span title="Category"></span></span> Category</li></ul>

</div></td></tr></tbody></table></div>

<div class="navbox-styles"></div><div role="navigation" class="navbox" aria-labelledby="Game_engines_(list)393" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Game_engines_(list)393" style="font-size:114%;margin:0 4em"><a href="Game_engine" title="Game engine">Game engines</a> (<a href="List_of_game_engines" title="List of game engines">list</a>)</div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div>

<ul><li><a href="Source_port" title="Source port">Source port</a></li>

<li><a href="First-person_shooter_engine" title="First-person shooter engine">First-person shooter engine</a>

<ul><li><a href="List_of_first-person_shooter_engines" title="List of first-person shooter engines">List of first-person shooter engines</a></li></ul></li>

<li><a href="Game_engine_recreation" title="Game engine recreation">Game engine recreation</a>

<ul><li><a href="List_of_game_engine_recreations" title="List of game engine recreations">List of game engine recreations</a></li></ul></li>

<li><a href="Game_creation_system" title="Game creation system">Game creation system</a></li>

<li><a href="List_of_visual_novel_engines" title="List of visual novel engines">List of visual novel engines</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Proprietary_software" title="Proprietary software">Proprietary</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">1980s</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Adventure_Game_Interpreter" title="Adventure Game Interpreter">Adventure Game Interpreter</a></li>

<li><a href="Cobra_(game_engine)" class="mw-redirect" title="Cobra (game engine)">Cobra</a></li>

<li><a href="Filmation_(game_engine)" title="Filmation (game engine)">Filmation</a></li>

<li><a href="Freescape" title="Freescape">Freescape</a></li>

<li><a href="Sierra_Creative_Interpreter" title="Sierra Creative Interpreter">Sierra Creative Interpreter</a></li>

<li><a href="SCUMM" title="SCUMM">SCUMM</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">1990s</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="3D_GameStudio" title="3D GameStudio">3D GameStudio</a></li>

<li><a href="Clickteam" title="Clickteam">Clickteam</a></li>

<li><a href="Dark_Engine" title="Dark Engine">Dark Engine</a></li>

<li><a href="GameMaker" title="GameMaker">GameMaker</a></li>

<li><a href="Genie_Engine" title="Genie Engine">Genie Engine</a></li>

<li><a href="GoldSrc" title="GoldSrc">GoldSrc</a></li>

<li><a href="LithTech" title="LithTech">LithTech</a></li>

<li><a href="Mugen_(game_engine)" title="Mugen (game engine)">Mugen</a></li>

<li><a href="Reality_Lab" title="Reality Lab">Reality Lab</a></li>

<li><a href="RenderWare" title="RenderWare">RenderWare</a></li>

<li><a href="RPG_Maker" title="RPG Maker">RPG Maker</a></li>

<li><a href="Sim_RPG_Maker" title="Sim RPG Maker">Sim RPG Maker</a></li>

<li><a href="Unreal_Engine_1" title="Unreal Engine 1">Unreal Engine 1</a></li>

<li><a href="Virtools" class="mw-redirect" title="Virtools">Virtools</a></li>

<li><a href="Virtual_Theatre" title="Virtual Theatre">Virtual Theatre</a></li>

<li><a href="Voxel_Space" title="Voxel Space">Voxel Space</a></li>

<li><a href="Zillions_of_Games" title="Zillions of Games">Zillions of Games</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">2000s</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Ubisoft_Anvil" title="Ubisoft Anvil">Anvil</a></li>

<li><a href="C4_Engine" title="C4 Engine">C4 Engine</a></li>

<li><a href="CryEngine" title="CryEngine">CryEngine</a></li>

<li><a href="Crystal_Tools" title="Crystal Tools">Crystal Tools</a></li>

<li><a href="Euphoria_(software)" title="Euphoria (software)">Euphoria</a></li>

<li><a href="Flare3D" title="Flare3D">Flare3D</a></li>

<li><a href="Frostbite_(game_engine)" title="Frostbite (game engine)">Frostbite</a></li>

<li><a href="Gamebryo" title="Gamebryo">Gamebryo</a></li>

<li><a href="GameSalad" title="GameSalad">GameSalad</a></li>

<li><a href="HeroEngine" title="HeroEngine">HeroEngine</a></li>

<li><a href="Leadwerks" title="Leadwerks">Leadwerks</a></li>

<li><a href="Marmalade_(software)" title="Marmalade (software)">Marmalade</a></li>

<li><a href="MT_Framework" title="MT Framework">MT Framework</a></li>

<li><a href="PhyreEngine" title="PhyreEngine">PhyreEngine</a></li>

<li><a href="Shark_3D" title="Shark 3D">Shark 3D</a></li>

<li><a href="Source_(game_engine)" title="Source (game engine)">Source</a></li>

<li><a href="Titan_(game_engine)" title="Titan (game engine)">Titan</a></li>

<li><a href="Unigine" title="Unigine">Unigine</a></li>

<li><a href="Unity_(game_engine)" title="Unity (game engine)">Unity</a></li>

<li><a href="Unreal_Engine_2" title="Unreal Engine 2">Unreal Engine 2</a></li>

<li><a href="Unreal_Engine_3" title="Unreal Engine 3">Unreal Engine 3</a></li>

<li><a href="Virtools" class="mw-redirect" title="Virtools">Virtools 2.5</a></li>

<li><a href="Vicious_Engine" class="mw-redirect" title="Vicious Engine">Vicious Engine</a></li>

<li><a href="Vision_(game_engine)" title="Vision (game engine)">Vision</a></li>

<li><a href="Visual3D_Game_Engine" title="Visual3D Game Engine">Visual3D Game Engine</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">2010s</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="4A_Engine" class="mw-redirect" title="4A Engine">4A Engine</a></li>

<li><a href="Amazon_Lumberyard" title="Amazon Lumberyard">Amazon Lumberyard</a></li>

<li><a href="Bitsquid" title="Bitsquid">Bitsquid</a></li>

<li><a href="Buildbox" title="Buildbox">Buildbox</a></li>

<li><a href="Construct_(game_engine)" title="Construct (game engine)">Construct</a></li>

<li><a href="Creation_Engine" title="Creation Engine">Creation Engine</a></li>

<li><a href="Decima_(game_engine)" title="Decima (game engine)">Decima</a></li>

<li><a href="Defold" title="Defold">Defold</a></li>

<li><a href="Felgo" title="Felgo">Felgo</a></li>

<li><a href="ForgeLight" title="ForgeLight">ForgeLight</a></li>

<li><a href="Fox_Engine" title="Fox Engine">Fox Engine</a></li>

<li><a href="Ignite_(game_engine)" title="Ignite (game engine)">Ignite</a></li>

<li><a href="Luminous_Engine" title="Luminous Engine">Luminous Engine</a></li>

<li><a href="Pixel_Game_Maker_MV" title="Pixel Game Maker MV">Pixel Game Maker MV</a></li>

<li><a href="RE_Engine" title="RE Engine">RE Engine</a></li>

<li><a href="Snowdrop_(game_engine)" title="Snowdrop (game engine)">Snowdrop</a></li>

<li><a href="Stencyl" title="Stencyl">Stencyl</a></li>

<li><a href="Source_2" title="Source 2">Source 2</a></li>

<li><a href="UbiArt_Framework" title="UbiArt Framework">UbiArt Framework</a></li>

<li><a href="Unreal_Engine_4" title="Unreal Engine 4">Unreal Engine 4</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">2020s</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Unreal_Engine_5" title="Unreal Engine 5">Unreal Engine 5</a></li>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Free_and_open-source_software" title="Free and open-source software">Free and<br>open-source</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="1970s25" scope="row" class="navbox-group" style="width:1%">1970s</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Z-machine" title="Z-machine">Z-machine</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">1990s</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Adventure_Game_Studio" title="Adventure Game Studio">Adventure Game Studio</a></li>

<li><a href="Build_(game_engine)" title="Build (game engine)">Build</a></li>

<li><a href="Crystal_Space" title="Crystal Space">Crystal Space</a></li>

<li><a href="Doom_engine" title="Doom engine"><i>Doom</i> engine</a></li>

<li><a href="Game-Maker" title="Game-Maker">Game-Maker</a></li>

<li><a href="OHRRPGCE" class="mw-redirect" title="OHRRPGCE">OHRRPGCE</a></li>

<li><a href="Quake_engine" title="Quake engine"><i>Quake</i> engine</a></li>

<li><a href="Quake_II_engine" title="Quake II engine"><i>Quake II</i> engine</a></li>

<li><a href="Stratagus" title="Stratagus">Stratagus</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">2000s</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Blender_Game_Engine" title="Blender Game Engine">Blender Game Engine</a></li>

<li><a href="Bork3D_Game_Engine" class="mw-redirect" title="Bork3D Game Engine">Bork3D Game Engine</a></li>

<li><a href="Cocos2d" title="Cocos2d">Cocos2d</a></li>

<li><a href="Game_Editor" title="Game Editor">Game Editor</a></li>

<li><a href="GDevelop" title="GDevelop">GDevelop</a></li>

<li><a href="Irrlicht_Engine" title="Irrlicht Engine">Irrlicht Engine</a></li>

<li><a href="JMonkeyEngine" title="JMonkeyEngine">jMonkeyEngine</a></li>

<li><a href="Lightweight_Java_Game_Library" class="mw-redirect" title="Lightweight Java Game Library">Lightweight Java Game Library</a></li>

<li><a href="Open_Wonderland" title="Open Wonderland">Open Wonderland</a></li>

<li><a href="Panda3D" title="Panda3D">Panda3D</a></li>

<li><a href="Papervision3D" title="Papervision3D">Papervision3D</a></li>

<li><a href="Plasma_(game_engine)" class="mw-redirect" title="Plasma (game engine)">Plasma</a></li>

<li><a href="Platinum_Arts_Sandbox" title="Platinum Arts Sandbox">Platinum Arts Sandbox</a></li>

<li><a href="Pygame" title="Pygame">Pygame</a></li>

<li><a href="Scratch_(programming_language)" title="Scratch (programming language)">Scratch</a></li>

<li><a href="Solar2D" title="Solar2D">Solar2D</a></li>

<li><a href="Thousand_Parsec" title="Thousand Parsec">Thousand Parsec</a></li>

<li><a href="Torque_(game_engine)" title="Torque (game engine)">Torque</a></li>

<li><a href="Vassal_Engine" class="mw-redirect" title="Vassal Engine">Vassal Engine</a></li>

<li><a href="Wintermute_Engine" title="Wintermute Engine">Wintermute Engine</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">2010s</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Delta3D" title="Delta3D">Delta3D</a></li>

<li><a href="Godot_(game_engine)" title="Godot (game engine)">Godot</a></li>

<li><a href="GPUOpen" title="GPUOpen">GPUOpen</a></li>

<li><a href="Horde3D" title="Horde3D">Horde3D</a></li>

<li><a href="LibGDX" title="LibGDX">libGDX</a></li>

<li><a href="OpenFL" title="OpenFL">OpenFL</a></li>

<li><a href="PlayCanvas" title="PlayCanvas">PlayCanvas</a></li>

<li><a href="Raylib" title="Raylib">Raylib</a></li>

<li><a href="Stencyl" title="Stencyl">Stencyl</a></li>

<li><a href="Stride_(game_engine)" title="Stride (game engine)">Stride</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">2020s</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Open_3D_Engine" title="Open 3D Engine">Open 3D Engine</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr></tbody></table></div>

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