Xbox 360

The Ultimate Doom, named simply Doom on the service, was released as a download for the Xbox 360 on the Xbox Live Arcade service on September 27, 2006. A one-level trial version can be downloaded for free, or the full version can be bought for 400 Microsoft Points ($5 US). The port was developed by Nerve Software and Vicarious Visions.

Differences between the Xbox 360 and PC versions
The game is an accurate port of the PC version, but features several differences.

New features

 * High definition video mode (1080i) support.
 * Online multiplayer with a lobby function.
 * Splitscreen multiplayer.
 * 5.1 surround sound.
 * Leaderboards.
 * Achievements.

Changes

 * The controller buttons can not be rebound.
 * Exit switches and portals are deactivated in deathmatch games.
 * No cheat codes.
 * The ability to freely scroll the automap is disabled (i.e. the automap is always in follow mode).
 * The gamma setting can not be altered.
 * The menu is different.
 * Upon dying, the player will instantly and automatically be returned to the last checkpoint, instead of lying dead on the ground and having to press a button. However, this only ever occurs if the right trigger (fire) is held after dying, as right trigger is the button to return to the last checkpoint.

Bugs

 * Various monsters are not in fast mode on the Nightmare skill level.
 * The game sometimes freezes in situations where the original game did not.

Achievements
Doom has 12 Achievements, totaling 200 GamerScore.