Need info on The Orange Box (Xbox 360)

Does The Orange Box for the Xbox 360 contain Half-Life 2,Half-Life 2: Episode One, Half-Life 2: Episode Two, Team Fortress and Portal or does it contain just Half-Life 2: Episode Two, Team Fortress and Portal. Someone pls give me an answer. Thanks.
Answer #1
It has all 5 games.
Answer #2
* Half-Life 2
* Half-Life 2: Episode One
* Half-Life 2: Episode Two
* Team Fortress 2
* Portal
Answer #3
Ok sweet. Cos I wanna play episode 1. Thanks.