Yume Koujou: Doki Doki Panic (Fan Translation)

It was later released outside of Japan in an altered format under the name Super Mario Bros. 2, since the original Japanese Super Mario Bros. sequel, Super Mario Bros.: The Lost Levels, was deemed too difficult for overseas players. Eventually, the altered Mario version of Doki Doki Panic was released in Japan as well, under the title Super Mario USA.

Imajin is the balanced character. While Mario replaced him, Imajin's balance in all areas has since become a staple of Mario's in the sports games.

Mama has the ability to jump higher and lightly hover at the top of her jumps. Luigi took her place, possibly because he had already been given higher jumps than Mario in Super Mario Bros.: The Lost Levels. Like his brother's balanced stats, Luigi's higher jumps has become a mainstay in the Mario series.

Lina could hover, although she is lackluster in speed and strength. Princess Toadstool replaced her. Lina's moves inspired two of Peach's moves in Super Smash Bros. Melee and later Super Smash Bros. Brawl.

Papa, the strongest character in the game, could throw enemies and items very far, but he is not very good at running or jumping. While Toad takes his place, in future video games (other than Wario's Woods and Mario Superstar Baseball), Toad was not endowed with the Papa's might.

Several changes were made in order to make the game appropriate for the Mario series. Graphical changes were made for certain enemies and characters. Additionally, the albino Mouser boss was replaced with the Clawgrip boss. This change was in tune with the decision to release the edited Doki Doki Panic in place of the Japanese Super Mario Bros. 2, which Nintendo of Japan feared was too advanced for European and American gamers......BULL***!