I was a little surprised that you said you wanted to try the ME games. I'd say they are about 2/3 FPS, and 1/3 RPG. I'm uncertain how to characterize just how much choice you have in the ME games, especially since all the endings in ME3 don't seem to really reflect all your prior decisions.

But the so-called RPG/MMORPGs that I've played kind of annoy me, in that, how is it role-playing if you cannot break character?