Super Mario Bros: The Lost Levels, is a video game produced by Nintendo, first released in Japan on June 3, 1986 for the Famicom Disk System. The game is very similar to Super Mario Bros., both graphically and in terms of gameplay, and is generally considered the most difficult game in the NES leg of the series. Because of the game's difficulty and its similarity to the first Super Mario Bros., and because then-chairman of Nintendo of America, Howard Lincoln, personally disliked the game, Nintendo originally decided not to release it in the United States. Instead, they localized an original Japanese game, Yume Kōjō: Doki Doki Panic, replaced the characters with those of the Mario universe, and released it in the U.S. under the title Super Mario Bros. 2. This game was not released outside Japan until an inclusion of a remake in Super Mario All-Stars for the Super NES.
