Seeing the credits has been the criteria for completing most of the games on the list so it would make sense to require it, but I don't like it. Pokemon Puzzle League had to be beat on 'Hard' to see credits which I didn't mind, but games like 1080 and the Extreme G titles have to be beaten on ridiculous difficulty which I absolutely don't like. Some seem arbitrary like Star Wars Shadow of the Empire must be beat on Medium and Killer Instinct on Hard - I assume that is because of a credit roll, but I have tried and failed so I wouldn't know. Battlezone: Rise of the Black Dogs has to be beat with Americans in Pilot mode which I am confident is not the only way to see credits....so I guess what I'm saying is I don't know?.......