Metamod: Source generally tries to support all Source engine based games. However, some API features may only be supported by some games. This does not mean these features will not work on games not listed here, but that games listed here are specifically known and tested to work. The only Source-based game completely unsupported by Metamod:Source is Dark Messiah. User Message API Functions - GetUserMessageCount(), FindUserMessage(), GetUserMessage() - Battle Grounds 2 - Counter-Strike: Source - Day of Defeat: Source - Dystopia - Garry's Mod 10 - Half-Life 2: Deathmatch - The Ship - SourceForts