Category:Engine branches

Source 2004 ▶ Source 2006 ▶ Orange Box branch ^{(Source 2007▶ Source 2009/MP ▶ Source 2013 ^{(TF2 branch, Xengine)})} ▶ Left 4 Dead engine branch ▶ Alien Swarm engine branch ▶ Portal 2 engine branch ^{(Titanfall engine branch)} ▶ CS:GO engine branch ^{(Strata Source)} ▶ Dota 2 engine branch

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Various branches of the GoldSrc and Source engine by both Valve and third-party developers. A build of GoldSrc and Source is only considered a branch when it is incompatible with previous releases.