I just saw the trailers for Mass Effect series, and I wanna get Mass Effect 3, but I don't know if I should do it or if I should get Mass Effect 2 and 1 first. Though honestly speaking I don't think I will get the 2 earlier games, so will I be able to understand the story of Mass Effect 3 ? I can read the plots for the first two games on wikipedia though, but will that be enough ?