Super Mario Bros. 2

Nintendo of America followed a strict set of rules during their early years, so that they wouldn't 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 this game, the Japanese "Super Mario Bros. 2", was felt not to be sufficiently different from the first game and too difficult, it was never considered for a release in the USA. A Famicom game called Yume Koujou: Doki Doki Panic (1987) was used instead, which was reworked to make it look like a Super Mario game, and released internationally as Super Mario Bros. 2 (1988). The Japanese "Super Mario Bros. 2" was eventually released internationally in 1991, as the "Lost Levels" segment of Sûpâ Mario korekushon (1993), but made somewhat easier.

In the version released as part of "Super Mario All-Stars", in the beginning of World 1-2, there is a single block on the edge of a hole with a block structure similar to a staircase on the side opposite. The original Japanese Famicom version had the hole filled with water however, the water was inexplicably removed in the Super Nintendo version.

Edited into All Night Nippon Super Mario Bros. (1986)