GoldSrc is a game engine developed by Valve, first showcased in the 1998 first-person shooter game Half-Life. Elements of GoldSrc are based on a heavily modified version of id Software's Quake engine. Following Half-Life's release, the engine powered future games developed by or with oversight from Valve, including Half-Life's expansions, Day of Defeat, and multiple games in the Counter-Strike series.

GoldSrc was succeeded by the Source engine with the releases of Counter-Strike: Source and Half-Life 2 in 2004, though Valve continues to support the engine with periodic updates. Read More