Team Fortress 2 is a multiplayer first-person shooter game developed and published by Valve Corporation in 2007. 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 ported to the PlayStation 3 in December 2007. It was released as a standalone game for Windows in April 2008, and updated to support macOS in June 2010 and Linux in February 2013. It was made free-to-play in June 2011, and is distributed online through Valve's digital retailer, Steam.