I own this, excellent system to own, just had mine sent out to get modded to play pal games hopefully can expand my import collection right now I only have ninja golf, I think at some point someone was making an add-on to expand the memory called the Atari xm, but I don't see it happening anytime soon, the only so far is for the Colecovision which I placed my order with atariage which should come out next month along with gradius and pengo