premise: Team Fortress 2 is incapable of being a video game.
hypothesis: Team Fortress 2 ( TF2 ) is a team-based multiplayer first-person shooter video game developed and published by Valve Corporation . It was released as part of the video game bundle The Orange Box in October 2007 for Microsoft Windows and the Xbox 360 . A PlayStation 3 version followed in December 2007 . Team Fortress 2 received critical acclaim for its art direction , gameplay , humor , and use of character in a multiplayer-only game .