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Microsoft has released the newest list of backwards compatible games. Check them out.
Avatar: The Last Airbender
Breakdown
Call of Duty 2: Big Red One
Call of Duty 3
Cars
Crash Bandicoot 5: Wrath of Cortex
Dai Senryaku VII: Modern Military Tactics
FIFA Soccer 2007
Full Spectrum Warrior
Guilty Gear Isuka
JSRF: Jet Set Radio Future
MechAssault 2: Lone Wolf
Mercenaries
NASCAR 2006: Total Team Control
NFL Fever 2004
Oddworld: Munch’s Oddysee
Panzer Dragoon ORTA
Phantom Dust
Reservoir Dogs
Return To Castle Wolfenstein
RugbyLeague 2
Sonic Riders
Soul Calibur 2
Street Fighter Anniversary Collection
The King of Fighters Neowave
The King of Fighters 2002 & 2003
Tiger Woods PGA TOUR 07
Tony Hawk’s Underground
Ultra Bust-A-Move
Unreal Championship 2: The Liandri Conflict
Xiaolin Showdown
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art.