List of Super Mario 3D World pre-release and unused content

This is a list of pre-release and unused content for the game Super Mario 3D World.

Early Ideas
Concept artwork shows that Princess Peach's cat form was originally going to incorporate her brooch. It also shows that the Cat forms of characters would have standard gloves on their hands rather than cat paw gloves. Peach was originally going to be the damsel in distress until Miyamoto made her a playable character.

The Double Cherry item wasn't planned to be in the game originally. It came into being from a mistake that a developer made by putting two controllable Marios in the game by accident. The staff thought it was a good idea, so they decided to put it in the game.

Princess Peach was originally going to be the one kidnapped by Bowser like in previous Super Mario games, but this was changed by Yoshiaki Koizumi, who wanted a female character playable in the game.

E3 2013
The courses presented in the demo did not have alternative names. The level placements were also changed; in the final build, the courses present in the demo are:
 * World 1-5: became World 1-4: Plessie's Plunging Falls.
 * World 2-1: World 2-4: Really Rolling Hills in the final version.
 * World 4-2: changed to World 6-1: Clear Pipe Cruise.
 * World 4-Boss: changed to World 3-B: A Banquet with Hisstocrat. There is no level called World 4-Boss in the final game.
 * World 6-3: World 6-6: Bullet Bill Base in the release game.

Some levels and elements have undergone some changes:
 * Collecting coins would have not given the player points, while jumping on enemies did.
 * The panels in the bonus room from Really Rolling Hills had different colors. The Mario button that contains a stamp was not in the early level. The area where the third Green Star is found did not have a Rectangular ? Block. This level also contained standard Goombas.
 * Bullet Bill Base had normal trees, later replaced by beanpoles. Also, the sky background was more simple than in the final game.
 * Characters' shadows were darker.
 * The music was not orchestrated.
 * Some graphical details in the final product weren't implemented when the trailer was shown off.
 * The boost pads made a different sound when ran on.
 * Fort Fire Bros. had red lava instead of blue lava. The section seen in the trailer also features two Fire Bros. while the final product only features one at that part.
 * Cakewalk Flip originally had three Stingbies in one section. In the final version, they were replaced with a Ring Burner.
 * The Goal Pole at the end of a course did not have a golden flag when the player reaches the top. A small star, however, appeared and moved off-screen in its place. Hitting the top would grant the players one Extra Life as well as points, while in the final version players only earns points; this was changed to the way it is in the final version by the release of the second trailer.
 * Captain Toad's character icon is different; it features him without his adventure wear. Also, it has a blue background, instead of brown like the final version. The vest is also blue in the picture, just like Toad himself.
 * There are no instances where there are instructions on how to play the game.
 * Mario and Luigi's voice clips are reused from Super Mario Galaxy in the trailer and demo. In the final version, they have completely new voice clips. The other characters would have also reused voice clips from previous games.
 * The Ground Pound originally featured a small shockwave effect that appears when the player hits the ground; this was removed in the final version.
 * The sound effect that plays when the remaining time is added to the total score is different.
 * The sound that plays when collecting a Green Star is the same as the one that plays when collecting a Star Medal, reused from Super Mario 3D Land.
 * When playing with multiple players the backup items collected by others are present beneath the primary one rather than beside it.
 * Stamps are not present in any of the courses.
 * The final score is not presented on the level start screen wipe.
 * During the trailer and demo, the power-up sound effect used when collecting a Super Bell is the same as when collecting any other standard power-up, reused from Super Mario 3D Land, but with a small added bell jingle. In the final version, the power-up is given a different sound clip, but still contains the old one. The Fire Flower also reuses the standard sound effect from Super Mario 3D Land.
 * The characters wouldn't flash multiple colors when they obtained the Super Star Power-Up as seen in the first Trailer. However they still had the trail effect from the final game.
 * Plessie didn't wave to the characters when they dismounted him.
 * Horned Ant Troopers did not have spiked helmets on their heads. Instead, they just had spikes.
 * In Really Rolling Hills, one of the ? Blocks turned into a Coin Box; in the final version, only Coin Blocks turn into Coin Boxes.
 * Princess Peach's main technique was originally going to be fluttering, like Luigi, but was changed to her floating using her skirt, just like in ''Super Mario Bros. 2.
 * In the demo version of Really Rolling Hills, the first ? Block in the level holds a Super Bell, while the hidden block above it holds a 1-up Mushroom. In the final game, the first block holds a coin, and the hidden block holds a Super Bell.
 * Whenever Mario transformed into Cat Mario, he would say "Nya Nya", which is Japanese for "meow". In the final version, this was changed to "Meow meow" instead. Also, the sound he makes when he scratched was different.
 * A Banquet with Hisstocrat didn't have any Bowser fireworks in it. The item box was also repositioned in the final version, being against a small wall in the final whereas in the demo it is in the center of that area.
 * Hisstocrat's brooch was originally green. It was changed to blue by the time the third trailer was released, as it is in the final product. His skin also appears more blue and, along with his minions, is visibly scaled in the final version, being a solid purple in the original trailer and demo.
 * Bullet Bill Base had a lighter sky background which was later replaced by a darker one.
 * Chargin' Chucks were going in appear in Spike's Lost City but were removed.
 * The characters did not have angry expressions on their faces when they fought a boss.
 * The Color Block room in the trailer had two Green Stars. Not only did it look identical to the Color Block room in Really Rolling Hills (suggesting that the third Green Star may not have existed by then, and that the trailer may have been made before the demo), but no level in the final version has exactly two Green Stars.
 * In Plessie's Plunging Falls, the first Green Star was on top of the waterfall staircase. In the final version, the first Green Star was moved to the boost lift. This level also had more Splounders.
 * As seen in the trailer, Captain Toad Goes Forth originally had less Biddybuds, having two red ones as well as three multicolored ones surrounding the fourth Green Star, rather than three of multiple colors near the rising platform and five surrounding the Green Star.
 * In World 6-1, the exit of the coin heaven area was at the bottom of the hill before the first key coin. In the final version, the exit is at the top of the hill.
 * Snowball Park didn't have any mountains in the background.
 * When Mario crouched in his cat form, he would crouch normally then doing a special Cat move which enables him to slide.
 * Mines in Clear Pipes originally damaged the player but could cross spite of this, while in the final game, The Mines hurt the player and returns backwards so its destruction is necessary.

October demo

 * The character selection screen details were gray instead of red.
 * Princess Peach icon background and her unselected icon was purple (or a very dark tone of pink) instead of the light-pink as the final version.
 * Princess Peach voice clips for "Jumping" and "Getting Damage" were reused voice clips from Mario Sports Mix.
 * In the final game, when a character is powered-up by a cat suit, the character steps mark in the sand. In this demo they don't do the same.
 * Cat Goombas made a different meow sound effect when diving. They also didn't have a sound effect for being stomped or defeated.
 * In Bowser's Bullet Bill Brigade, the Sprixie didn't say "Yay!" or "You're welcome!" at the beginning after being shot out of the cannon.

Unused Content
Found in the files of Super Mario 3D World are two icons depicting an orange-colored Mario that are similar to the character icons. It is unknown what these would have been used for, but it is possible that they would have served a similar purpose to the Super Guide in New Super Mario Bros. Wii and Donkey Kong Country Returns. In addition to this, there is a hand icon, most likely planned for a fifth player to control an invisible hand, similar to the Boost Mode of New Super Mario Bros. U. The final version has a similar feature, but it is used while controlling a character, making the icon useless.