List of New Super Mario Bros. Wii beta elements
 Early ideas
 Princess Peach
At one stage during development, Shigeru Miyamoto considered making Princess Peach a playable character, like in Super Mario Bros. 2, but eventually decided against it because of how difficult it would be to animate her dress.
 Mega Mushroom
 Early builds
 HUD during gameplay
As seen in early screenshots of the game, the HUD originally appeared transparent during gameplay; additionally, the text appeared very different, with only generic font; possibly as a placeholder. Later screenshots and videos of the final build show that the HUD is now solid (only turning transparent if a player goes behind it), certain icons were updated and brightened up, along with the trademark Mario text. Notably, the life box was sized down, while the score and timer stretched out slightly.
Also, when a Yoshi is ridden, a music note was originally meant to appear on the upper-right side of the screen. Keys were originally going to appear in the game. When obtained, the key moves to the HUD, next to the lives and coins counters.
 "Level Clear!"
In the E3 2009 demo, whenever a character completes a stage, the message "Level Clear!" was seen. It was changed to "Course Clear!" in the final build for unknown reasons.
 Results screen
In demos shown at Press Conferences, after finishing each level a results screen would pop-up showing the player how many enemies were stomped and how many coins were collected, which is only seen in the Free-For-All mode in the final game. However, in New Super Mario Bros. U, once the game is beaten, players have access to a purple Records Toad House, containing aforementioned information. Also, in New Super Mario Bros. 2, the coin counter shows how many coins have been collected throughout in the game.
 Flag and midway flag
The Goal Pole and the Checkpoint Flag were originally going to have an image of a skull on them. This was changed to Bowser's emblem in the final version. The skull flag was previously used in New Super Mario Bros.. Additionally, an early image shows the Midway Flag as a circular sign with a skull on it.
 Power-Up Panels
In the final game, the "Your Turn" message does not appear in single player mode while playing the Power-Up Panels minigame.
 Early platform models
The platforms in World 7-4 were normal platforms in the beta. The tracks were black instead of yellow and the end points were red.
A later version of the game had the emblem of the player who was controlling the platforms as the end of the trails, while the platform itself was gray with a bolt all the time, just like when they are off in the final version.
 Sound effects and music
 Level themes
The underground, desert, castle, athletic themes and the level clear tunes were ported from New Super Mario Bros., most likely as a placeholder. The snow, forest, lava and Ghost House musics did not exist.
 Sound effects
During the E3 2009 demo, coins had 8-bit sound effects, just as they did in the first New Super Mario Bros.. This was later replaced with different sound effects. The Propeller Mushroom's sound effect was also different in the beta.
Also, the power-up sound effect was originally the sound effect from New Super Mario Bros., but this was changed to the 8-bit version.
 Objects from New Super Mario Bros.
 One-way gate
This gate allows the player to cross only from one direction. The only usable ones are "enter from the right" and "enter from the left". The variety which allows the players to "enter from the bottom" and "enter from the above" can only be used once.
 Swinging pendulum platform
A swinging pendulum platform from World 6-Castle was to appear. They self-rotate (the player doesn't need to attach them to a rotation controller for them to move), and the player can adjust their swing arc, speed and size.
 Red Yoshi
While the game was still in development, Nintendo confirmed that a Red Yoshi was ridable and an artwork was made. However, as seen in a later trailer, Red Yoshi got replaced with Pink Yoshi and the artwork was changed.
 Blue Yoshi
When a Yoshi is ridden, a music note was to appear on the upper-right side of the screen next to the time counter. This was removed in the final version.
In the first battle against Larry Koopa as presented in the E3 2009 demo, whenever he goes into his shell, he barely covers any ground. Also, the first battle with Morton was held in World 1-Castle in the demo, not in World 6-Tower (as that level wasn't featured in the demo). Morton doesn't have spiked pillars stabbing the platforms to the side; instead, there were Lava Bubbles jumping out of the lava.
 Dropping in on the Koopalings
In the E3 2009 demo, after players go through the boss door, they fall from the top of the screen and land in the boss room, as the initial Larry and Morton videos showed. This was just like in the original New Super Mario Bros., where the player also enters the Bowser Jr. battles the same way. In the final version, the players are already on the ground when the boss room is first shown.
 Blocks and Objects
 Early Roulette Block
The Roulette Block was suppose to look like the ones in New Super Mario Bros.. They had different item icons too.
 Conveyor Belt Spikes
Spikes were to be on Conveyor Belts, but were taken out for unknown reasons.
 Gray ? Blocks
 Yoshi Cookie
 Level Designs
 Enemy Changes
The Bramballs in the E3 trailer had brown feet instead of yellow feet.
Micro-Goombas were able to be defeated by running into them. They acted like the ones in New Super Mario Bros., but were changed to the Super Mario Bros. 3 style where the Micro-Goombas would stick to Mario and hold him down.
 Defeated King Bills
King Bills were able to be defeated, but this was changed in the final version.
 Unused Power-up
While never revealed or used in the game, a power-up that appears to be a chicken suit was originally intended to be in the game. Concept art of the suit had been discovered, though its purpose or effects on the characters who were to use it is unknown. The idea was eventually changed into the Penguin Suit.
 Penguin Suit
The Penguin Suit was going to have white eyes with a blue pupil, but was changed to black eyes.
 Propeller Mushroom
The orange Propeller Mushroom was originally a Propeller Suit, with a red letter "P"-like suit with a propeller at its top. It's unknown why it was changed.
 Fire Toads
Originally, the Fire Toads had mushroom caps which had their respective colors reversed with white spots on them. However, in the final version of the game (and later trailers prior to its release), the Toads' fire forms instead have them with caps with reversed colorations of their respective colors, and with red spots instead of white ones.
Additionally, the early Fire Blue Toad and Fire Yellow Toad had their vests of the same color while their pants remained a maroon like color. However, in the final version of the game, the Toads received a reddish/maroon color for both their vests and pants.
 Unused data
Information for a Giant Buzzy Beetle and a Stretch exist within the game. However, neither of them were used in any level. The Giant Buzzy Beetle can be used as a platform, and will only move continuously in one direction; it does not fall while airborne. It does, however, change direction when it hits walls or collides with certain enemies. Lastly, it is immune to every known attack method, including invincibility. Kab-ombs were also made to appear, but were scrapped from the final release.
The only unused track in the game is "cheepfanfare_lr.ry.32".
 Items and objects
There were unused platforms. These include four rotating platforms (similar to the ones during the Reznor battle from Super Mario World), see-saw, and controllable platforms like the ones from 1-2 and 7-2 in New Super Mario Bros., respectively. Trampoline platforms that bounce the player to the opposite direction are also seen. These platforms were simply long gray blocks.
Arrows that were used in New Super Mario Bros. were found in the game through hacking methods. They do the exact same thing as they did in said game.
 Broken Warp Pipe model
Within the game's code, "obj_dokan.arc" contains a broken Warp Pipe model.
 Event Switch
A magenta ! Switch can be found in the game files, but is never used in the game. This ! Switch is an Event Switch. The Event Switch allows an event to activate one of up to four event IDs specified and do something else.
An unused key can be found in the game's files. They may have unlocked door on Airships.
 Larry Koopa model
 Snake Block Texture
 Toad Balloon
Toad Balloons were originally meant to be green coins. This can be proved because the name of the object is "EN_GREENCOIN". "obj_coin.arc" also contains a model and texture for a green coin, but is never used in the game.
 World Layouts
In the World Map folder on the disc, left behind is an unused configuration file for the "Collected Star Coins" screen ("CollectionCoinCourseSort.arc"). From it, early level layout can be assumed.
 Yoshi Animations
Yoshi has unused animations for touching water, Poisoned Water and lava. He also has unused animations of when touching enemies like Bramballs, Munchers, Mecha-Koopas, Bob-ombs, Buzzy Beetles, Super Dry Boness, Thwomps, Cooligans, Wigglers and Mega Wigglers. Several more animations can be seen when eating a Toad Balloon, entering a horizontal Warp Pipe, Cannons and doors.
 External Links