In Paper Mario, Luigi has different interactions at the Mario Bros. house depending on story progression. After completing Chapter 4, he will be in the bedroom, but storm out upon seeing Mario approach.

If Mario activates the “sleep in bed” prompt from the rightmost edge of the activation zone, he will still be in the living room before going to bed, and only enter the bedroom during the sleep scene. The scene of Luigi noticing him and running out will interfere with him lying down, causing the glitch seen in the footage.

Mario will seemingly lie down in his bed correctly only to swoop out of it at the last second and fall asleep in mid-air.

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Design from a promotional 2000 IBM T-shirt featuring Mario. This is referring to the fact that Nintendo commissioned IBM to develop the Gekko, the CPU used in the GameCube, which was a modified version of their existing PowerPC 750CXe processor.

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In Super Mario World, Mario cannot be crushed by a P-Switch. If he is caught between a P-Switch and a wall, he will be pushed out in the direction opposite to the wall.

However, there is no such protection when being caught between two P-Switches and a wall, which will in fact crush Mario.

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In New Super Mario Bros., each power-up has a specific index that picks the effects of the power-up from a list. While there are only few different power-ups, the list itself accepts entry numbers up to 256, the vast majority of which result in unintended effects.

Most power-ups that use unintended entries are some variety of what is shown in the footage: an effect that discolors Mario and causes him to grow uncontrollably, similar to the beginning of the Mega Mushroom animation. However, instead of stopping when Mario is a specific size, he will simply keep growing indefinitely until the game crashes.

Main Blog | Twitter | Patreon | Small Findings | Source: YouTube user “Skawo”

Officially licensed 1992 Mario plush from Japan.

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In Super Mario Maker 2, falling Bullet Bill Blasters will not crush Mario on slopes. Instead, they will push Mario down the slope, with the effect being cumulative if he is pushed into another Bullet Bill Blaster.

Main Blog | Twitter | Patreon | Small Findings | Source: YouTube user “SmashyYT”

The characters Troff and Scoff from Donkey Kong 64 have been originally rendered with pierced nipples (as seen in their instruction manual artwork, left column); an aspect that was removed in all subsequent versions of their artwork such as the one distributed to the press (right column).

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Japanese print ad for a giveaway of tickets to the 1993 Super Mario Bros. movie. Note the Goombas from the movie edited onto the top of the fortress.

Main Blog | Twitter | Patreon | Small Findings | Source: twitter.com user “CoolBoxArt”

During the Nintendo Space World 2000 presentation, an extremely brief clip of a pre-release version of Luigi’s Mansion was shown, featuring three ghosts playing cards. These ghosts are completely absent from the finished game aside from a nearly unrecognizably small texture of this scene being used on the Ghost Portrificationizer.

For over two decades, the only footage of these ghosts has been low-quality video recorded by a handheld camera from one of the attendees. In 2024, a high-quality version of the footage surfaced, allowing a more detailed look at the ghosts for the first time.

Main Blog | Twitter | Patreon | Small Findings | Source: YouTube user “hard4games”

In Super Mario 64, if Mario approaches a Bob-omb without being seen and stands close to its spawn point, it will continue walking in a straight line without ever turning around as long as it does not encounter any obstacles or uneven ground and Mario does not move away from the spawn point. Note how it walks straight ahead in the footage despite its usual behavior being walking in circles.

If it encounters a slope while walking, it will change directions. If it happens to change directions in such a way that it looks directly at Mario, it will see him no matter how far away it is at that moment, even if it would never be able to see him from that distance under regular circumstances.

Taken together, this results in the bizarre scenario seen in the footage, where Mario is doing literally nothing while the Bob-omb first decides to walk extremely far away, suddenly “realizes” Mario was there the whole time, and attempts to pursue him only to explode before even reaching him.

Main Blog | Twitter | Patreon | Small Findings | Source: SM64 (NA, N64)