絕地要塞
Team Fortress 2 is a multiplayer first-person shooter game developed and published by Valve Corporation. It is the sequel to the 1996 "Team Fortress" mod for "Quake" and its 1999 remake, "Team Fortress Classic". The game was released in October 2007 as part of "The Orange Box" for Microsoft Windows and the Xbox 360, and was later ported to the PlayStation 3 in December 2007. It was released as a standalone title for Windows in April 2008, and was updated to support Mac OS X in June 2010 and Linux in February 2013. It is distributed online through Valve's digital retailer Steam, with Electronic Arts managing all physical or console editions of the game.