Super Mario Bros. 2

In perhaps the most famous switcheroo in all of game history, the Japanese version of Super Mario Bros. 2 was declared “too hard” by Nintendo of America and replaced with a Mario-ified port of the Famicom hit, Yume Kojo: Doki Doki Panic. The new game (dubbed Super Mario USA in Japan) was a huge success for its four playable characters, improved graphics, immersive levels, and catchy music, and eventually became the 3rd bestselling game for the NES. And yet. Because of its strange new villai...