EA have a winter warmer sale on at the moment that includes such titles as Need for Speed: Hot Persuit, Battlefield Bad Company 2, Medal of honor, Bulletstorn, Crysis 2, Dead Space 1 & 2, Dragonage 2, alice: Madness Returns and Mass Effect 1 & 2 all for 50% off.
you can fiind the deals HERE. you will need to create an origin account to download and play these games. If you already have some of these titles via steam you may be able to use the Steam code to register them on your Origin account, but I'm not sure which will and which won't work.