Team Fortress 2 is a team-based first-person shooter multiplayer video game developed by Valve Corporation. A sequel to Valve's previous Team Fortress Classic, it was first released as part of the video game compilation The Orange Box on October 10, 2007 for Windows and the Xbox 360.A PlayStation 3 version then followed on November 22, 2007.The game was later released as a standalone package for Windows on April 9, 2008. Team Fortress 2 was distributed online through the Steam system, while retail distribution was handled by Electronic Arts. The development of Team Fortress 2 was led by John Cook and Robin Walker, the designers who originally created the Team Fortress modification for Quake in 1996.