Team Fortress Classic supports numerous types of play, with distinct objectives for teams of players to pursue. As of 2008, the game is one of the ten most played Half-Life modifications in terms of players according to GameSpy. In June 2000, the game underwent a significant upgrade, adding new player character models and game modes. The game itself revolves in a number of teams, each with access to nine classes, competing in a variety of scenarios such as Capture the flag, VIP protection and territorial control. The designers of the Team Fortress modification were contracted by Valve to develop Team Fortress 2, but initially remade their original work on Valve's game engine. The game was originally announced in 1999, powered by Valve's GoldSrc engine. The development of Team Fortress Classic was led by John Cook and Robin Walker, the designers of the original Team Fortress modification.
A standalone version was later released with Valve's Steam system in 2003. A remake of the Team Fortress modification for Quake, Team Fortress Classic was originally released for Windows on as a free addition to Half-Life. Team Fortress Classic is a team-based multiplayer first-person shooter video game developed by Valve. Team Fortress Classic (usually abbreviated TFC) is the predecessor of Team Fortress 2 and a port of the original Team Fortress, which was originally a mod for the popular game 'Quake', to the original Half-Life engine.