The Orange Box includes all the content of The Black Box for PC, plus the original Half-Life 2 and Half-Life 2: Episode One. Innovative games featured in The Orange Box include Half-Life 2: Episode Two, the second installment in Valve's episodic trilogy advances the award-winning story, leading the player to new locations outside of City 17, as well as the pioneering type of single-player action game Portal, which rewrites the rules for how players approach and manipulate their environment, and Team Fortress 2 -- an all-new version of the legendary title that spawned team based multiplayer action games with a daring new art style features the most advanced graphics of any Source-based game released to date.