Team Fortress 2

Team Fortress 2 is a multiplayer team-based first person shooter, developed by Valve Corporation as part of the game compilation The Orange Box. The game was announced in 1998 as a sequel to the original Team Fortress Mod for Quake, but has since been through various concepts and designs. In 1999, the game appeared to be deviating from the original Team Fortress and Valve's own Team Fortress Classic mod for Half-Life by heading toward a more realistic and militaristic style of gameplay, but the design metamorphosed further over the game's nine-year development and game engine switch.