 Nintendo of America followed a strict set of rules during their  early years, so as they wouldnt end up like the industry disaster  Atari. One of these rules was that they would never "repackage" a  game, like Atari had done with many of its titles. Since the  Japanese SMB2 was not sufficiently different from the first game, it  was never considered for release. An FDS game called "Doki Doki  Panic" was rewritten in cartridge form and given a face