Sven Co-op v4.6 Mod for Half-Life

Sven Co-op is a Co-operative based game for Valve Software's Half-Life, in which players must work together against computer-controlled enemies and solve puzzles as a team. Since its initial release in January, 1999, over one thousand custom co-operative scenarios have been created for the mod. Sven Co-op also allows the Half-Life, Half-Life: Uplink and Opposing Force single-player campaigns, and also Neil Manke's They Hunger, to be played co-operatively.