 Originally released in Japan as "Dream Factory: Doki Doki Panic".  The original Super Mario Bros. 2 was only released in Japan and was  released in America in 1991 as a part of Super Mario Allstars under  the title of "Lost Levels." In 1988, Doki Doki Panic was altered by  Nintendo to fit Mario, Luigi, Toad, and Princess. In addition, the  Americanized version was released in Japan under the title "Super  Mario USA."