No, see where it says PC in big letters in the picture?

Does anyone know if this activates on steam?

No, Mass Effect 3 is the only ME game to run solely through Origin (EA's gaming platform).

Is this a steam or origin key? Or is it a standalone cd key?

It may very well be an Origin key. I dont think this game is available for redemption on Steam. I know the copy that I bought from NewEgg was Origin CDKEY but I also bought the DVD copy.

Questions & Answers: Mass Effect 3 PC Game

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Mass Effect 3 PC Game

EA
M - Mature
Genre Action

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