Yeah, it was called Riot City in the arcade, which ofcoarse they were going to call the US version. The levels are mixed up. As an example, you could say, that scene 3-2 in Riot City is scene 1-4 in Riot Zone(not exactly like that, but, that's the only way I can think of to describe it). I think the music is all different, but I haven't played thru the entire arcade version yet. The 2 main char's are different. Well, I remember atleast the white punk rocker is a black guy in Riot City.