Super Princess Peach

Super Princess Peach finally gives Peach a starring role, and this time it's up to her to save the Mario Bros. instead of the other way around. While it's a high-quality game, the fact that her emotions are the main gimmick made more than a few people uncomfortable.

Unused Stages
There are various unused stages in the game's files. All of these (excluding Iggy's unused boss stage) are areas used to test various gimmicks, including Vibe puzzles, Perry transformations, and...Sad Goombas. For those who have not fully played the game, these puzzles are explained in the descriptions of the stages.

To access these stages in the US version, use the following Action Replay code, replacing the X with the hexadecimal unit shown for each stage, and enter a level. 022855D8 0100000X 027C3AF8 0100000X 027C3B28 0100000X 027C3B50 0100000X


 * The main test stage. It has a Coin Bag, two Koopa enemies, spikes, breakable blocks, and an abundance of pipes; most of them lead to nowhere, but a unique exception are three pipes that lead to different test stages, complete with graphics on them. The pipe with a submarine sends you to the top right corner of, where it is impossible to get out. The pipe with the graphic of the carriage takes you to , appropriately, and the pipe with the graphic of a boat sends you to.




 * A maze with a huge amount of Sad Goombas; so many, in fact, that the game starts to lag immensely, and graphics start to disappear. On the top of the maze is a pillar and a trampoline; however, it is impossible to jump over it even with the trampoline, as the top of the level cuts off access.




 * The doors are connected, meaning going in one sends you out the other. Along with the pink block, there are also three rows of ice blocks present on the strange strip of land. By using the Sad Vibe on the strip, it becomes frozen, and the pink block can be hit to slide to the other side, taking out a row of ice blocks also present on the strip with it.




 * Another pink block, strip of land, and ice block level. Presumably, the layout seems to imply you were supposed to freeze the strip, hit the pink block once, then go into the path and take the newly accesible door; however, it is impossible to freeze the strip, as the low roof is in the way. Also present in the level are some pipes in the upper left corner; the only accessable one takes you back to the main test stage.




 * A Slidebrella test stage. If one enters this level without the Slidebrella upgrade, they will find it waiting to be picked up on top of the oddly textured (and destructible!) platforms. The rope has a few gaps and lower ropes to go off, but most of it goes on until the end of the screen, where it is impossible to fall off... or do anything else. The door at the beginning sends you straight to the top left corner of value, where it is impossible to get out.




 * A small room with motionless lava, some spikes, a ball, trampoline, and a large block. They are all able to be picked up, and respawn after a while upon touching the lava.




 * A level filled with destructible blocks, Coin Bags, and enemies. Strangely, it is able to be completed by touching the goal posts; doing so takes you to the nonexistant "World 0", a black screen with no music located left of Wave Beach on the World Map.




 * A level consisting of an unused block type, an on/off switch, and an odd-looking hill. Hitting the switch enables extra platforms to appear. Despite the similarity in looks that the blocks have with the destructable kind used in-game, they are indestructible.




 * It's Iggy Koopa! ...But the level ends as soon as the sphere dropping down touches him, which is almost immediately as he spawns. The game then acts as if a boss is defeated, and hands you a Toad. Afterwards, there's a Perry's dream sequence in which nothing is shown, and you're dropped off at the nonexistant "World 9", which is above Bowser's Villa.




 * A level that has the two flying obstacles from Bowser's Villa. Also present is a ball, and to the far right of the screen are pipes that don't go anywhere.




 * A cliff with early tiles. On the other side is an object that can be spun using the Sad Vibe; spinning it results in the message "A loud noise came from somewhere!", though nothing with the level is changed. The pipe in the far right doesn't lead anywhere.



Koopalings


Unused sprites exist for all seven Koopalings, which suggests they were at one time intended to appear in the game, likely as bosses as their animations suggest. For one reason or another, they were scrapped and would not return until New Super Mario Bros. Wii. Interestingly, the order they were intended to appear in is identical to the order they appeared in Super Mario World. Note that Roy and Morton's shells are green; there are no palettes that color them pink and grey, the colors their respective shells usually are.

Iggy appears in an unused level map, but only his idle animation is implemented despite having a full enemy animation set internally, and the game behaves as if a boss is defeated as soon as he is spawned.

Goonie


Sprites for Goonie, the large bird enemy from Yoshi's Island. The skeletal variant makes a cameo in the ground tiles for the fifth world's boss minigame, but not as an enemy. The graphics are straight from Super Mario Advance 3, with the palette darkened to resemble the colors used in the original game.

Early Goomba Variants
There exists two unused Goomba variants from early in development, with colors and actions representing two different Vibe. There are only two types of Goombas in the final game: Mad and Sad.



An early Goomba in a radically different art style than the one the final game has; probably from extremely early in development. His color and sprites seems to imply he's a Glad Goomba.



Another early Goomba, using an art style reminiscent of the one used above. His color and sprites imply he's a Calm Goomba. One thing to note is that Calm enemies in the final game do not have a separate green palette-they're just asleep.

Title Screen
"PUSH START" was changed to "PRESS START" on the title screen for international versions of the game.

Button Icons
The L and R button sprites were redrawn to look more like the buttons on the console.

Toad's Shop
The price labels in Toad's Shop use the same font as the coin counter in the non-Japanese versions of the game.

Music and Glossary
When highlighted, the music names in the Music Room, as well as the enemy names in the Glossary move from left to right in non-Japanese versions of the game.

3D Models
Present only in the Japanese ROM are various 3D models and textures, many of which are based on characters and settings from the Densetsu no Stafy series, also developed by TOSE. Most of these files were copied over to Densetsu no Stafy 4, and remained unused there as well.