Maybe it's because of my deep fondness for BioWare's fictional universe and its characters, but for whatever reason, I ended up playing it quite a lot back in the day on my Xbox 360. I've always leaned more towards single-player campaigns, but something about Mass Effect's multiplayer has always seemed so much less intimidating and more appealing to me. Now, I'll be the first to admit that I don't play multiplayer games very often.
