Open 'The Orange Box' and you'll see that it's crammed full of gaming goodies, including Half-Life 2: Episode Two, the second installment in the Half-Life 2 episodic trilogy; Team Fortress 2, the sequel to the game that put class-based, multiplayer team warfare on the map; and Portal, the game that blends puzzles, first person action, and adventure gaming.
To bring gamers up to date with the Half-Life 2 universe, The Orange Box also includes Half-Life 2, the best-selling and highest-rated action game series of all time, and the episodic debut Half-Life 2: Episode One-together, more than 30 hours of award-winning gameplay. Purchasers of the PC version of The Orange Box who already own Half-Life 2 and Half-Life 2: Episode One can conveniently 'gift' them to a friend from within Steam.
The Orange Box is now shipping to retailers and will be available shortly for Xbox 360.
You can download The Orange Box: here