Keep your enemies closer.
EA’s digital PC store Origin can activate Steam codes for some EA games.
PC Gamer successfully redeemed keys for Battlefield: Bad Company 2, Dragon Age 2, Dragon Age: Origins, Mass Effect 2, Dead Space 2 and Alice: Madness Returns. Mass Effect 1, however, did not work.
PC Gamer managed to validate the Steam product key for Dragon Age 2 on Origin, and then launch the Steam version of DA2 from the Origin client. The Steam overlay and chat functions were intact and present.