The "Half-Life" SDK was used as a base for the development of many multiplayer mods, including the Valve-developed "Team Fortress Classic" ("TFC") and "Deathmatch Classic" ("DMC").
SDK для "Half-Life" использовался в разработке ряда многопользовательских модов, таких как "Counter-Strike, Team Fortress Classic (TFC), Day of Defeat (DOD), Deathmatch Classic (DMC)" и других.