The Orange Box

Games included on disc:
- Half-Life 2
- Half-Life 2: Episode 1
- Half Life 2: Episode 2
- Portal
- Team Fortress 2

Half- Life 2 (+ Episodes) notes:
All 3 games playable offline without updates. Some occasional framerate issues occurred. Experienced one instance where player was stuck in an infinite falling state after a loading transition requiring a save reload. Experienced one freeze which forced a restart. Developer commentary also included.

Portal notes:
Fully playable offline without updates. Advanced chambers and bonus challenges are available after completing the game once. Developer commentary also included. Note that this version does not include the Still Alive chambers (and a few additional achievements) that were included with the later XBLA release of the game, but the two versions are otherwise pretty much the same.

Team Fortress 2 notes:
This game is completely multiplayer only, and does not feature any bot support as it was only added to the PC version in a later update. It is still possible to play multiplayer matches without Xbox Live by playing via System Link (Only tested with 2 players, but player counts can go up to 16 players). Developer commentary is also included and can be accessed in single player. Note that this version never received any meaningful content updates and is significantly older than the current PC version.