The App Store is replete with retro gaming greatness. For example PC-Engine (known as TurboGrafx-16 in the US) fans can download and play Military Madness: Neo Nectaris (iTunes link).
Manomio, creators of C64 (iTunes link), are toiling away on an Amiga emulator, which will be released on the App Store later this year.
Amiga was home to some of the greatest games of all time, like Peter Molyneux’s Populous and Syndicate, FTL’s Dungeon Master, EA’s Earl Weaver Baseball, and everything by Psygnosis and the Bitmap Brothers.
Bring on Marble Madness...