Iceberg

Backwards Long Jump

 * Main article: Backwards Long Jump

The Backwards Long Jump (or BLJ) is a glitch which occurs because there is no backward speed limit while long jumping, this glitch is used very often among speedruns of the 16 and 0-star categories.

This glitch was patched in the Shindou version of the game but it is still in the Nintendo 64DD version of the game.

Impossible Coin

 * Main article: Impossible Coin

The Impossible Coin is the name given to an uncollectable coin in Tiny-Huge Island by pannenkoek2012. Due to how group coin spawners work, one of the five coins that should be located on a slope in the large version of Tiny-Huge Island does not spawn since it would spawn underground. This coin has been deemed impossible because of it.

Originally, the Impossible Coin's name was held by another coin in the small version of Tiny-Huge Island that was erroneously placed inside the wall. However, pannenkoek2012 would soon collect this coin on June 12th 2014 at 2:26 AM EST. The Impossible Coin's name also belongs to the coin that resides within the Mystery Goomba.

Half A Press
A half A press is the name given to an A press which can leech off another A press. Some actions require the A press to be held rather than pressed, and some areas require the A press to enter. Henceforth, it would be more logical to hold down the A press after pressing it to get into the course, and then use the held A press to accomplish that task. When denoting the amount of A presses in a single level, this leeched A press is regarded as a half A press. This denotation is used within the A Buttonless Challenge.

L is Real 2401

 * ''Main article: Luigi

"L is Real 2401" is an interpretation of what the plaque texture reads inside the Castle Courtyard. Other interpretations have read it as "Eternal Star". The phrase "L is Real 2401" has become associated with the idea of unlocking Luigi in Super Mario 64, with the number 2401 being associated with how to unlock him.

Mystery Goomba

 * Main article: Mystery Goomba

The Mystery Goomba is a Goomba which spawns at the death barrier in Bowser in the Sky. This Goomba is apart of a Goomba triplet, and because of how the spawner operates and is placed, one of the Goombas ends up spawning off the platform and therefore onto the nearest surface: the death barrier. Since this is outside the spawner's range, the Mystery Goomba disappears immediately meaning he is only present for one frame.

Parallel Universes

 * Main article: Parallel Universes

Parallel Universes are a phenomenon and glitch in Super Mario 64. The values handling Mario's collision have less bits to work with than the actual value of Mario's position. Because of this, Mario is able to appear in invisible duplicate copies of the course far away from the level.

Spaceworld '95 Beta

 * Main article: Super Mario 64/Spaceworld 1995 Beta

Whomp's Fortress 1-up
On the tower that appears on every star aside from the first on Whomp's Fortress, a 1-up can be found hidden within the tower by breaking away at the wall. This 1-up went unnoticed by many players, and spurred the idea of personalisation when realised as many did not remember this 1-up existing.

Blargg

 * Main article: Blargg

Bugged Fire Texture
The smoke texture that emits from Mario after he has been burned is actually in the incorrect format, making it display incorrectly.

Dancing Flowers

 * Main article: Dancing Flowers

There are many weather settings used in Super Mario 64 within certain levels, whether it be the snowing in snowy levels or the lava bubbling in levels with lava. One of the settings that go unused create dancing flowers on nearby terrain to Mario. However, this setting would go unused. The animated graphic of the dancing flower can still be found in game.

Ghoul Medal
In Big Boo's Haunt, one of the signs outside of the large mansion reads that if the player makes it out alive, they deserve a "ghoul medal", a play on the term "gold medal". A ghoul medal is never recieved in game, so it was likely that this was just a throwaway line to taunt the player. However, some have claimed seeing and collecting this supposed ghoul medal. It could also be related to the unused key objects that were originally intended to be within this course.

MIPS Throwing
Shigeru Miyamoto stated that originally Mario was able to throw MIPS by his ears earlier in development. This was later removed in development, but it is still possible to throw MIPS by glitching him into the room where the moat gets lowered, and throwing him while underwater.

Mirror Room

 * Main article: Princess Peach's Castle/Second Floor

"Please walk quietly in the hallway!"
On the second floor of the castle, a billboard can be found nearby the stairs that lead up to the third floor. It reads "Shhh! Please walk quietly in the hallway!". The sign has raised many suspicions as to what it is referring to, as the player isn't needed to be quiet within this floor and it isn't even a hallway. It could be that this sign was originally intended for another area, but was left in this area on accident.

Secret Aquarium

 * Main article: Secret Aquarium

The Secret Aquarium is one of the Castle's many secret stars, found within a small alcove in the Jolly Roger Bay room. It's placement on the iceberg is questionable, since it is a well-known secret level and is mandatory in getting all 120 stars. However, there have been some anomalies relating to the aquarium, such as the darker Aquarium Limbo.

The Big Dud

 * Main article: Big Bob-omb

Volcano Blocks

 * Main article: Lethal Lava Land

Unagi's Tunnel

 * Main article: Jolly Roger Bay

Yellow Cap Switch

 * Main article: Yellow Cap Switch

Yoshi's Saddle
Yoshi, who appears atop the castle after collecting all 120 stars, has a different saddle design in Super Mario 64. Notably, the white rim that should be around his saddle is missing. The modelling of Yoshi's saddle implies that the white rim was supposed to be there, but was erroneously coloured red.

Bob-omb Village

 * Main article: Bob-omb Village

Bowser Broke the Door
The door into the Castle Courtyard is bricked up, as if it was broken through and quickly patched up. This has led some people to assume that Bowser broke into the castle through the back door.

Cold Cold Crevasse

 * Main article: Cold Cold Crevasse

Cold, Cold Crevasse is an area off-handedly mentioned within Cool, Cool Mountain on a sign nearby the spawn area of the course. It does not appear to match up to anywhere near where the sign is, leading many to believe that it is the remnant of a scrapped sub-area for Cool, Cool Mountain.

How Bowser got into the Castle with his Sub

 * ''Main article: Dire Dire Docks

Island in the Distance
In the background used in Bob-omb Battlefield and Tiny-Huge Island, three islands can be seen off in the distance.

Original Resolution Textures
The textures used in Super Mario 64 are downsized to 32x32 (sometimes 32x64 or 64x32) to save on file size, although many of these textures can be sourced back to pre-existing images or textures.

Removed Courses

 * See: Removed Areas

Seven course slots are left empty on Super Mario 64's internal level select, and there were many courses planned in development but scrapped. Little to nothing remains of these courses in the idealised copy of the game spread across the internet.

Despite that, some personalised copies of Super Mario 64 contain some of these unused and removed courses.

THE END Screen
The screen that appears at the end of the credits has unsettled many for it's odd perspective and empty atmosphere. Behind the cake, some weird shapes can be seen. Many have assumed it is Yoshi.

True Locations of the Painting Worlds
The worlds within the paintings are not tied to the painting, and exist as seperate worlds. This can be seen with Whomp's Fortress, which reappears in Super Mario Galaxy 2 as Throwback Galaxy. Excluding Rainbow Ride's appearance in the Super Smash Bros. series, this is the only time a course from Super Mario 64 has been revisited in another Mario game. It also implies that the painting worlds are situated in completely seperate galaxies to the one where Mario's planet is.

Additionally, the pool of water outside of Princess Peach's Castle can be accessed through a tunnel within Dire, Dire Docks. While not painting worlds, Cavern of the Metal Cap is known to be behind the waterfall near Princess Peach's Castle and Wing Mario Over the Rainbow is situated far above the castle's moat as that's where Mario spawns when falling off the stage.

"Ally with Info"

 * Main article: Toad

Only in Super Mario 64 DS, a Toad can be found on the second floor who refers to an "ally with info" within the mirror room. This supposed ally with info does not appear to be referring to Wario, as Toad will still talk about them when talking to Wario. It is not an error either, as Toads have different sets of dialogue depending on which of the four characters is being played. The Toad will mention this ally with info to all four characters, even Wario.

Brain Diagram

 * Main article: Wet-Dry World

Wet-Dry World supposedly has a brain texture within its files, and the layout of the level itself is meant to be a simulation of a brain.

Metal Mario Texture
The texture used for Metal Mario is the defualt texture for metal in the SGI workstation. Interestingly, this texture would never be reused for any of Metal Mario's future appearances, even with his old Super Mario 64 model returning as a costume in Super Mario Odyssey.

The Bowser Room

 * Main article: The Bowser Room

Wario Apparition

 * Main article: Wario Apparition

Delicious Cake

 * Main article: Delicious Cake

An unexplained addition to the iceberg. It is likely referring to the "delicious cake" that Princess Peach promises Mario at the start and end of the game, and is seen on the ending screen. Other interpretations of this entry on the iceberg involve it being a cut area with more significance, or related to an unused kitchen area within the castle.

Internal Plexus of the Castle

 * Main article: Princess Peach's Castle

The Internal Plexus of the Castle is a mysterious entry on the iceberg which can refer to many things. Commonly, it refers to how the castle is arranged in a bizarre way and may be a reflection of the A.I.'s programming and arrangement with how rooms should overlap with each other and stretch out of the castle. Other interpretations of the Internal Plexus site it as what's behind the castle walls, a series of misshapen and bizarre rooms that feel unsettling due to their strange appearance.

NFR Cartridge Differences
The "Not For Resale" cartridges of Super Mario 64 are presumed to have differences in comparison to the retail release of the game. This could include beta content, changes to the personalisation's algorithms or much more.

Shared Nightmares

 * ''Main article: Shared Nightmares

Shared Nightmares is a concept which spans outside of Super Mario 64, although it heavily relates to conspiracy theories. Many people who played Super Mario 64 claim to have nightmares which are strikingly similar to those other users in their communities have. The most common of these nightmares relate to a Kellogg's partnership with Super Mario 64, where beta versions of the penguins seen in the game were put on the box art of their cereal. These penguins were unsettling to many, and spurred nightmares where they would babble in an unintelligible language.