Like free items in your RPGs? Then you should probably check out the demos for both Mass Effect 3 and Reckoning. Play the demo and get some free loot for the opposite game.
Playing the Mass Effect demo will net you a full set of N7 armor, plus a nice omniblade dagger for Reckoning.
And the Reckoning demo and you’ll receive a set of “Reckoner” armor as well as a Chakram Launcher,which as the name implies, shoots things that explode.
Source – Joystiq