An anonymous reader writes "When Mario Brothers 2 for the NES came out in the U.S. in 1988, many people were surprised at how different than the original Mario Brothers it was. The second Mario Brothers title that U.S. audiences know was never designed to be a Mario title at all. Instead, it's a game called Doki Doki Panic that's been modified with Mario sprites. Here's a review of the original Super Mario Brothers 2 as designed by Shigeru Miyamoto and released only in Japan. Nintendo felt that the poison mushrooms, blowing wind, and warps that took you backwards made it too difficult for North American audiences."