Amazon’s offering a third game free when you buy two Platinum Hits for Xbox 360, provided it’s an equal or lesser price then the two you’ve already picked.
Some of the games in the deal include Mass Effect, Halo 3, Grand Theft Auto IV, Dead Rising and BioShock, as well as the two most recent additions to the collection, Fable II and Halo Wars.
Get The Orange Box as your free game. Just a tip.
Only open to the US unfortunately.