I know the only ones that I have beat have been 2 and 4. I have all of them, but 3. I rented CV when it came out for DC and got pretty far, but I bought it and never got back into it. I rented 1 so many times back in the day, but I can't remember how far I ever got. I have 0, but haven't played it, I bought it as part of the Pure Evil pack to play REmake. 4 seems to definitely be the easiest though, but I also think it is the best. Not of the series, but the best game in general.