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Line 4: {{Infobox video game engine \| name = Source 2 \| logo = Source 2 engine logo ~~and wordmark~~.svg \| logo alt = Official logo of ~~the~~ Source ~~video game engine~~2 \| developer = [[Valve Corporation\|Valve]] \| released = {{start date and age\|2015}} Line 12: \| license = [[Proprietary software\|Proprietary]] }} '''Source 2''' is a [[video game engine]] developed by [[Valve Corporation\|Valve]]. The engine was announced in ~~2014~~2015 as the successor to the original [[Source (game engine)\|Source]] engine, with the first game to use it, ''[[Dota 2]]'', being ported from Source that same year. Other Valve games, such as ''[[Artifact (video game)\|Artifact]]'', ''[[Dota Underlords]]'', ''[[Half-Life: Alyx]]'', ~~and~~ ''[[Counter-Strike 2]]'', and ''[[Deadlock (video game)\|Deadlock]]'' have been produced with the engine. == History == Plans for a successor to the original [[Source engine]] began following the release of ''[[Half-Life 2: Episode Two]]'' in ~~2006~~2007.<ref name="ign ep3 2020">{{cite web \| url = https://www.ign.com/articles/valve-explains-why-half-life-2-episode-3-was-never-made \| title = Valve Explains Why Half-Life 2: Episode 3 Was Never Made \| first = Tom \| last = Marks \| date = March 23, 2020 \| access-date = March 23, 2020 \| work = [[IGN]] \| archive-date = March 23, 2020 \| archive-url = https://web.archive.org/web/20200323171744/https://www.ign.com/articles/valve-explains-why-half-life-2-episode-3-was-never-made \| url-status = live }}</ref><ref name=":1">{{Cite book \|last=Keighley \|first=Geoff \|title=Half-Life: Alyx - Final Hours \|year=2020}}</ref> ~~And Boblox in 2005.~~ The first engine tech demo was created in ~~2009~~2010 by remaking a map from ''[[Left 4 Dead 2]]''.<ref name=":1" /> Images of this were leaked onto the internet in early ~~2013~~2014.<ref>{{Cite web \|last=Phillips \|first=Tom \|date=January 28, 2014 \|title=Source 2 images show next-gen Left 4 Dead 2 prototype - report \|url=https://www.eurogamer.net/articles/2014-01-28-source-2-images-show-next-gen-left-4-dead-2-prototype-report \|url-status=live \|archive-url=https://web.archive.org/web/20140131044301/https://www.eurogamer.net/articles/2014-01-28-source-2-images-show-next-gen-left-4-dead-2-prototype-report \|archive-date=January 31, 2014 \|access-date=December 2, 2020 \|website=[[Eurogamer]] \|language=en}}</ref> At the ~~2013~~2014 [[Game Developers Conference]], Valve employee Sergiy Migdalskiy showed off a Source 2 physics debugging tool being used in ''Left 4 Dead 2''.<ref name="source2.62">{{cite web \|last=Migdalskiy \|first=Sergiy \|date=April 14, ~~2013~~2014 \|title=Physics for Game Programmers Debugging \|url=http://www.gdcvault.com/play/1020065/Physics-for-Game-Programmers-Debugging \|url-status=live \|archive-url=https://web.archive.org/web/20170422132935/http://www.gdcvault.com/play/1020065/Physics-for-Game-Programmers-Debugging \|archive-date=April 22, 2017 \|access-date=April 21, 2017 \|website=[[Game Developers Conference]]}}</ref> Source 2 was first made available via [[Steam Workshop]] tools for ''[[Dota 2]]'' in 2014 prior to it being officially announced at the ~~2014~~2015 Game Developers Conference.<ref name="SteamFree">{{cite web\|url=http://www.polygon.com/2015/3/3/8145273/valve-source-2-announcement-free-developers\|title=Valve announces Source 2 engine, free for developers\|last=Kollar\|first=Philip\|website=[[Polygon (website)\|Polygon]] \|date=March 3, 2015\|access-date=March 3, 2015\|url-status=live\|archive-url=https://web.archive.org/web/20150305093315/http://www.polygon.com/2015/3/3/8145273/valve-source-2-announcement-free-developers\|archive-date=March 5, 2015}}</ref> There, Valve stated their intent for it was to allow for content to be created more efficiently.<ref name="ign ep3 2020" /><ref name="source2.82">{{cite web \|last=Walker \|first=John \|date=November 11, 2012 \|title=Gabe Newell Might Have Announced Source 2, Possibly \|url=https://www.rockpapershotgun.com/2012/11/11/gabe-newell-might-have-announced-source-2-possibly/ \|url-status=live \|archive-url=https://web.archive.org/web/20201111205740/https://www.rockpapershotgun.com/2012/11/11/gabe-newell-might-have-announced-source-2-possibly/ \|archive-date=November 11, 2020 \|access-date=April 23, 2017 \|website=[[Rock Paper Shotgun]]}}</ref><ref name="source2.02">{{cite web \|last=Mahardy \|first=Mike \|date=March 3, 2015 \|title=GDC 2015: Valve Announces Source 2 Engine \|url=http://www.ign.com/articles/2015/03/04/gdc-2015-valve-announces-source-2-engine \|url-status=live \|archive-url=https://web.archive.org/web/20150304021002/http://www.ign.com/articles/2015/03/04/gdc-2015-valve-announces-source-2-engine \|archive-date=March 4, 2015 \|access-date=April 21, 2017 \|website=[[IGN]]}}</ref><ref>{{Cite web \|last=McKeand \|first=Kirk \|date=March 2, 2017 \|title=Gabe Newell on Source 2: 'For us, it's useful. For other devs, it's not as useful as Unity' \|url=https://www.pcgamesn.com/source-2-release-date \|url-status=live \|archive-url=https://web.archive.org/web/20200723220222/https://www.pcgamesn.com/source-2-release-date \|archive-date=July 23, 2020 \|access-date=April 5, 2020 \|website=[[PCGamesN]] \|language=en-GB}}</ref> Valve also stated that it would support the [[Vulkan (API)\|Vulkan graphics API]] and use a new in-house [[physics engine]] called Rubikon, which would replace the need for the third-party [[Havok (software)\|Havok]] tools.<ref name="source2.62" /><ref>{{cite news \|last1=Mahardy \|first1=Mike \|date=March 3, 2015 \|title=GDC 2015: Valve Announces Source 2 Engine \|work=[[IGN]] \|publisher= \|url=http://www.ign.com/articles/2015/03/04/gdc-2015-valve-announces-source-2-engine \|url-status=live \|access-date=March 3, 2015 \|archive-url=https://web.archive.org/web/20150304021002/http://www.ign.com/articles/2015/03/04/gdc-2015-valve-announces-source-2-engine \|archive-date=March 4, 2015}}</ref><ref name=":0">{{Cite web\|url = http://media.steampowered.com/apps/valve/2015/Migdalskiy_Sergiy_Physics_Optimization_Strategies.pdf\|title = Physics for Game Developers: Physics Optimization Strategies\|date = March 2015\|access-date = October 2, 2015\|publisher = [[Game Developers Conference]]\|last = Migdalskiy\|first = Sergiy\|url-status=live\|archive-url = https://web.archive.org/web/20160304061355/http://media.steampowered.com/apps/valve/2015/Migdalskiy_Sergiy_Physics_Optimization_Strategies.pdf\|archive-date = March 4, 2016\|df = mdy-all}}</ref> [[Gabe Newell]], president and founder of Valve, said that the company were prioritizing the development of their own games before they would release the engine and its [[software development kit]] to the public. asThis awas ~~means~~to ~~of ensuring~~ensure the highest quality for developers; ~~adding~~he added that they were intending to make the engine free to use for game developers as long as the game is published on their [[Steam (service)\|Steam]] service.<ref name="SteamFree" /><ref>{{cite web \|last=Zacny \|first=Rob \|date=February 16, 2016 \|title=Khronos and Valve reveal details of Vulkan API, show Dota 2 running in Source 2 on Intel integrated graphics \|url=https://www.pcgamesn.com/khronos-and-valve-reveal-details-of-vulkan-api-show-dota-2-running-in-source-2-on-intel-integrated-graphics \|url-status=live \|archive-url=https://web.archive.org/web/20150307005554/https://www.pcgamesn.com/khronos-and-valve-reveal-details-of-vulkan-api-show-dota-2-running-in-source-2-on-intel-integrated-graphics \|archive-date=March 7, 2015 \|access-date=November 12, 2017 \|website=[[PCGamesN]] \|publisher=}}</ref><ref name="source2_free2">{{cite web \|last=Savage \|first=Phil \|date=March 5, 2015 \|title=Source 2 will be free; won't ask for royalties \|url=http://www.pcgamer.com/source-2-will-be-free-wont-ask-for-royalties/ \|url-status=live \|archive-url=https://web.archive.org/web/20170425025555/http://www.pcgamer.com/source-2-will-be-free-wont-ask-for-royalties/ \|archive-date=April 25, 2017 \|access-date=April 24, 2017 \|work=[[PC Gamer]]}}</ref> In June 2015, Valve announced that the entirety of ''[[Dota 2]]'' would be ported over to Source 2 in an update called ''[[Dota 2 Reborn]]''.<ref name="source2.12">{{cite web \|last=Anthony \|first=Sebastian \|date=August 8, 2014 \|title=Valve quietly releases Source 2 engine, Source 2 version of Dota 2, and new Hammer map editor \|url=https://www.extremetech.com/extreme/187723-valve-quietly-releases-source-2-engine-source-2-version-of-dota-2-and-new-hammer-map-editor \|url-status=live \|archive-url=https://web.archive.org/web/20140809183322/https://www.extremetech.com/extreme/187723-valve-quietly-releases-source-2-engine-source-2-version-of-dota-2-and-new-hammer-map-editor \|archive-date=August 9, 2014 \|access-date=August 8, 2014 \|website=[[ExtremeTech]]}}</ref><ref name="source2.22">{{cite web \|last=Plaugic \|first=Lizzie \|date=June 13, 2015 \|title=Dota 2 is getting overhauled with a new game engine \|url=https://www.theverge.com/2015/6/13/8776369/dota-2-reborn-new-engine-source-2 \|url-status=live \|archive-url=https://web.archive.org/web/20170422133203/http://www.theverge.com/2015/6/13/8776369/dota-2-reborn-new-engine-source-2 \|archive-date=April 22, 2017 \|access-date=April 21, 2017 \|website=[[The Verge]]}}</ref><ref>{{cite web \|last1=Martin \|first1=Michael \|date=June 13, 2015 \|title=Valve Announces Dota 2 Reborn \|url=http://www.ign.com/articles/2015/06/13/valve-announces-dota-2-reborn-open-beta-coming-next-week \|url-status=live \|archive-url=https://web.archive.org/web/20160629144536/http://www.ign.com/articles/2015/06/13/valve-announces-dota-2-reborn-open-beta-coming-next-week \|archive-date=June 29, 2016 \|access-date=July 10, 2016 \|website=[[IGN]]}}</ref><ref>{{cite web \|last1=Macy \|first1=Seth \|date=September 9, 2015 \|title=Dota 2 Now Valve's First Ever Source 2 Game \|url=http://www.ign.com/articles/2015/09/09/dota-2-now-valves-first-ever-source-2-game \|url-status=live \|archive-url=https://web.archive.org/web/20150910075128/http://www.ign.com/articles/2015/09/09/dota-2-now-valves-first-ever-source-2-game \|archive-date=September 10, 2015 \|access-date=September 9, 2015 \|website=[[IGN]] \|publisher=}}</ref> ''Reborn'' was first released to the public as an opt-in beta update that same month before officially replacing the original client in September 2015, making it the first game to use the engine.<ref name="source2.32">{{cite web \|last=Nunneley \|first=Stephany \|date=June 13, 2015 \|title=Dota 2 being revamped with Source 2 engine and upgraded DotaTV experience \|url=https://www.vg247.com/2015/06/13/dota-2-source-2-engine-dotatv/ \|url-status=live \|archive-url=https://web.archive.org/web/20170422142931/https://www.vg247.com/2015/06/13/dota-2-source-2-engine-dotatv/ \|archive-date=April 22, 2017 \|access-date=April 21, 2017 \|website=[[VG247]]}}</ref><ref name="source2.42">{{cite web \|last=Boudreau \|first=Ian \|date=June 13, 2015 \|title=Dota 2 Will Update To Source 2 Engine Soon, Valve Says \|url=http://gameranx.com/updates/id/30218/article/dota-2-will-update-to-source-2-engine-soon-valve-says/ \|url-status=dead \|archive-url=https://web.archive.org/web/20151001112250/http://gameranx.com/updates/id/30218/article/dota-2-will-update-to-source-2-engine-soon-valve-says/ \|archive-date=October 1, 2015 \|access-date=April 21, 2017 \|website=GameRanx}}</ref><ref>{{cite web \|last=Livingston \|first=Christopher \|url=http://www.pcgamer.com/valve-announces-dota-2-reborn-new-engine-coming/ \|title=Valve announces Dota 2 Reborn, new engine coming \|date=June 12, 2015 \|work=[[PC Gamer]] \|access-date=June 13, 2015 \|url-status=live \|archive-url=https://web.archive.org/web/20150615040444/http://www.pcgamer.com/valve-announces-dota-2-reborn-new-engine-coming/ \|archive-date=June 15, 2015 }}</ref><ref>{{cite web \|last1=Macy \|first1=Seth \|date=September 9, 2015 \|title=Dota 2 Now Valve's First Ever Source 2 Game \|url=http://www.ign.com/articles/2015/09/09/dota-2-now-valves-first-ever-source-2-game \|url-status=live \|archive-url=https://web.archive.org/web/20150910075128/http://www.ign.com/articles/2015/09/09/dota-2-now-valves-first-ever-source-2-game \|archive-date=September 10, 2015 \|access-date=September 9, 2015 \|website=[[IGN]] \|publisher=}}</ref> Source 2 has also been used for Valve's ''[[Artifact (video game)\|Artifact]]'' and ''[[Dota Underlords]]'', with the engine later being supported on [[Android (operating system)\|Android]] and [[iOS]] for the latter.<ref>{{cite web \| url = https://www.pcgamesn.com/artifact/artifact-source-2-ios-android \| title = Artifact will use Source 2, bringing the engine to iOS and Android \| first = Dustin \| last = Bailey \| date = March 8, 2018 \| access-date = March 8, 2018 \| work = [[PCGamesN]] \| url-status=live \| archive-url = https://web.archive.org/web/20180309192121/https://www.pcgamesn.com/artifact/artifact-source-2-ios-android \| archive-date = March 9, 2018 \| df = mdy-all }}</ref><ref>{{cite web \|last1=McWhertor \|first1=Michael \|date=June 13, 2019 \|title=Valve's Auto Chess competitor is Dota Underlords \|url=https://www.polygon.com/2019/6/13/18678182/dota-underlords-valve-auto-chess-open-beta-platforms \|url-status=live \|archive-url=https://web.archive.org/web/20190613222336/https://www.polygon.com/2019/6/13/18678182/dota-underlords-valve-auto-chess-open-beta-platforms \|archive-date=June 13, 2019 \|access-date=June 13, 2019 \|website=[[Polygon (website)\|Polygon]]}}</ref> The engine also supports the creation of games in [[virtual reality]], being used in [[SteamVR]] Home, the ''[[Robot Repair]]'' tech demo within ''[[The Lab (video game)\|The Lab]]'', and ''[[Half-Life: Alyx]]''.<ref>{{cite web \|last1=Heaney \|first1=David \|date=March 25, 2020 \|title=Half-Life: Alyx Highlights Valve's Powerhouse Physics Engine \|url=https://uploadvr.com/half-life-alyx-rubikon-physics/ \|url-status=live \|archive-url=https://web.archive.org/web/20200723235814/https://uploadvr.com/half-life-alyx-rubikon-physics/ \|archive-date=July 23, 2020 \|access-date=April 5, 2020 \|website=[[UploadVR]]}}</ref><ref>{{cite web \|last1=Hollister \|first1=Sean \|date=November 21, 2019 \|title=Half-Life: Alyx is officially coming March 2020, and here's your first look \|url=https://www.theverge.com/2019/11/21/20975423/half-life-alyx-vr-price-release-date-screenshots-trailer-valve-steam \|url-status=live \|archive-url=https://web.archive.org/web/20191121185303/https://www.theverge.com/2019/11/21/20975423/half-life-alyx-vr-price-release-date-screenshots-trailer-valve-steam \|archive-date=November 21, 2019 \|access-date=November 21, 2019 \|website=[[The Verge]]}}</ref> Source 2 tools made specifically for creating content for ''Half-Life: Alyx'' were released in May 2020.<ref>{{cite web \|last=Fenlon \|first=Wes \|date=May 15, 2020 \|title=Half-Life: Alyx now has Steam Workshop support and official mod tools \|url=https://www.pcgamer.com/half-life-alyx-now-has-steam-workshop-support-and-official-mod-tools/ \|url-status=live \|archive-url=https://web.archive.org/web/20200517142057/https://www.pcgamer.com/half-life-alyx-now-has-steam-workshop-support-and-official-mod-tools/ \|archive-date=May 17, 2020 \|access-date=May 16, 2020 \|website=[[PC Gamer]]}}</ref> Line 31: ! 2015 \| ''[[Dota 2]]'' \| rowspan="78" \| Valve \| Ported from [[Source (game engine)\|Source]]; originally released in 2013 \|- ! 2016 \| ''[[Robot Repair]]'' \| ~~A tech~~Tech demo included within ''[[The Lab (video game)\|The Lab]]''~~; the rest were created using the [[Unity engine]]~~<ref>{{cite web\|url=https://www.roadtovr.com/valve-releases-the-lab-unity-renderer-for-free/\|title=Valve Releases 'The Lab' Unity Renderer for Free\|last1=James\|first1=Paul\|website=RoadToVR\|date=June 2, 2016 \|access-date=March 29, 2018\|archive-date=June 2, 2016\|archive-url=https://web.archive.org/web/20160602205954/https://www.roadtovr.com/valve-releases-the-lab-unity-renderer-for-free/\|url-status=live}}</ref> \|- ! 2018 Line 57: \| Port of ''[[Counter-Strike: Global Offensive]]'' (2012)<ref>{{cite web \|last1=Roth \|first1=Emma \|last2=Clark \|first2=Mitchell \|last3=Hollister \|first3=Sean \|date=March 22, 2023 \|title=Valve announces Counter-Strike 2, a free replacement for CS:GO \|url=https://www.theverge.com/2023/3/22/23651939/counterstrike-cs2-valve-smoke-grenades-limited-test \|access-date=22 March 2023 \|website=[[The Verge]]}}</ref> \|- ! rowspan="2" {{TBA}} \| ''[[~~Sandbox~~Deadlock (video game)\|~~Sandbox~~Deadlock]]''~~<!--Do not change to S&box per MOS:TMSTYLE-->~~ \|[[Beta test]]ing underway as of 2024 \|- \| ''[[S&box]]''<!--Do not change to Sandbox per MOS:TMSTYLE--> \| [[Facepunch Studios]] \| {{ubl\|Stylized as ''Ss&box''; development shifted from [[Unreal Engine]] ~~to Source 2~~ in 2020<ref>{{cite web \|last=Newman \|first=Garry \|date=October 27, 2020 \|title=New Engine \|url=https://sbox.facepunch.com/news/new-engine \|url-status=live \|archive-url=https://web.archive.org/web/20210119091458/https://sbox.facepunch.com/news/new-engine \|archive-date=January 19, 2021 \|access-date=January 25, 2022 \|website=[[Facepunch]]}}</ref>\|Expected to be a game engine and platform for developers to make Source 2 games<ref>{{Cite web \|title="Explaining s&box" \|url=https://sbox.game/news/july-update-97c0fa3c/explaining-sbox \|access-date=2024-12-03 \|website=sbox.game}}</ref>}} \|}