Return to Castle Wolfenstein is a first-person shooter video game published by Activision, released on November 19, 2001 for Microsoft Windows and subsequently for PlayStation 2, Xbox, Linux and Macintosh.
Quake II is a first-person shooter video game released in December 1997. It was developed by id Software and published by Activision.
Urban Terror is a freeware multiplayer first-person shooter video game developed by FrozenSand. Originally a total conversion of id Software’s Quake III Arena, FrozenSand released Urban Terror as a free standalone game in 2007 utilizing ioquake3 as a game engine.
Renegade X is a tactical first and third-person shooter video game with real time strategy elements created by Totem Arts.
Warsow, also stylized as War§ow, is an open source first-person shooter video game.