From Epic Games and Chair Entertainment comes the XBLA game Shadow Complex.  For 1200 Microsoft Points you can download the full version off of XBL.  People have been raving about this game, some already anointing it the best XBLA game ever.

You’ve entered the mysterious world of Shadow Complex. Now you must save Claire and stop the Restoration! Discover game-altering power-ups and weapons, plus more than 100 other items. Use new abilities to infiltrate the secret underground base. Defeat legions of enemies and battle futuristic bosses throughout the huge game world, with hours of intense gameplay unlike anything on Xbox LIVE Arcade!

Add Shadow Complex to your download queue