With your purchase of The Orange Box, you'll get Half-Life 2: Episode Two, Team Fortress 2, and Portal. They're all based on the same graphics engine, but they're all incredibly different games, which ensures that there's something for everyone. You'll also get 2004's Half-Life 2 and 2006's Half-Life 2: Episode One, which is handy if you aren't up to speed with what Gordon Freeman's been doing over the past few years. On the PC, you'll launch each game separately. On the Xbox 360, the game boots up to a menu where you can easily select any of the five games, and quitting out of a game brings you back to the selection menu.