An interesting detail in Donkey Kong Country: Tropical Freeze that is very easy to miss is the bookending of the game by plane wrecks, so that both the first stage begins with one and the last stage ends with one.

Top: the first stage of the game, Mangrove Cove, starts with Donkey Kong flying in (after being thrown out of Donkey Kong Island) and landing inside a wrecked plane, which he has to punch himself out of.

Bottom: the final level unlocked in the game if going for 100% completion is Crazy Clouds, the final level of the secret world, Secret Seclusion (not to be confused with the final level of the story, which is not the last one to be unlocked). This one is themed around plane wrecks held up magically in the sky, with the ending showing a giant plane wreck off to the right after the level goal.

Source: donkeykonghistory

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Top: Super Mario World includes a number of hidden 1-Up Mushrooms that are obtained by touching four invisible activation spots in the correct order. If you have ever randomly made a 1-Up Mushroom spawn from seemingly thin air during gameplay, this is due to this mechanic. There are 15 of these in the game, with the one shown in the image being in the Valley of Bowser 2 level.

Bottom: due to the way the activation points are arranged here, it is possible to cause the 1-Up Mushroom to spawn inside the wall if collected in the way shown in the footage. Luckily, Mario can still collect it by clipping into the ceiling slightly.

Source: RavenWorks, mariofantsudoi

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In Super Mario Maker 2, the Goomba Mask affects enemies by making them not pay attention to the player, ostensibly by believing that the player character is a Goomba. This makes perfect sense for sentient enemies, but it is humorous how it also affects obstacles that should logically not have the ability to choose their own actions at all.

In the footage, it is demonstrated that Spike Balls coming out of pipes will always roll to the left if the player is wearing a Goomba mask, but will roll towards the player when the mask is not worn. Similar unexpected behavior applies to icicles and other obstacles, suggesting everything in this world is specifically malicious towards the player characters even if it looks like an inanimate object.

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In Mario & Sonic at the London 2012 Olympic Games, the reflections of the audience do not follow real-world laws of physics that require reflections to be mirrored images. Instead, they are rotated from the originals.

Note the waving yellow Toad in the footage. He is waving with his right arm (viewer’s left), so that his reflection in the floor should also be waving with the arm that is on the viewer’s left. Instead, it is waving with the opposite arm, since it is merely rotated 180° from the original instead of being properly mirrored. The same applies to all other audience members but is most visible with the Toad.

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Top: a 2023 Japanese TV report on Nintendo showed early concept art for Super Mario Bros. that revealed another type of enemy that would have emerged from pipes, being green munching dragons.

Bottom: the footage is clear enough to allow the sprites to be reconstructed. Here they are inserted into Super Mario Maker to show what they could have looked like in-game. Note that while it is assumed they emerged from pipes, it is unknown what their speed or pattern for that behavior was, or whether they would have e.g. used projectiles like spitting fire.

Source: report, LooygiBros

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Promotional Super Mario Sunshine bottled water given away at preview events in 2002. Note the fake “Nutrition Facts” label reading:
Serv. Size: 1 Player
Calories 0
% Daily Value
Sunshine 100%
Classic Mario Fun 100%
Aquatic Hijinks 100%
Ground Pound 100%
Only for Nintendo GameCube 100%

Source: LeviHolden

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Many games attach essential code to the playable characters, making it necessary for them to appear during all gameplay scenes for the game to function. An example of that is the Paper Mario series, where Mario or another playable character must be in the scene at all times, so they are kept in the void far below the screen if they are not required.

In Donkey Kong Country 3, the Krack Shot Kroc level features a crosshair following the Kongs (as Squitter the Spider) and shooting at them. One of the bonus stages is very unique in that it has the player actually controlling the crosshair, with no Kongs being seen in the bonus room at all.

However, due to the above, the Kongs must actually still be present. In the original SNES version, they are moved out of bounds, which results in no issues. But in the GBA version, the solution was to make them (again, in their Squitter form) invisible and place them at the entrance to the bonus room.

This results in an unintentional way of losing the bonus challenge. If the player shoots the place where the invisible Squitter is, the game will end due to the global rule that bonus games are lost if the player takes damage. As such, the code-based necessity of keeping the Kongs in the room actually results in a way to lose the challenge that could potentially happen organically to some players.

Source: NintenUnity

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In Super Mario 64, Wiggler’s head actually has a limited active radius that is slightly smaller than the full size of the room he is in, but only in his peaceful state. Since it is impossible to enter the part of the cave where Wiggler is without starting his boss battle, this can normally not be seen during regular gameplay (no part of the red coin section below Wiggler is far enough to be outside the radius).

However, if glitches are used to get into Wiggler’s part of the room while he is peaceful, and then Mario simply stands in a corner looking at Wiggler for long enough, he will eventually walk far enough away from Mario for his head to despawn.

Visually, this will result in Wiggler seemingly losing his head and continuing to walk in place. Strangely, the body does not have an active radius and is always loaded, so it is unknown why the head does not have the same properties. The head will pop back into existence as soon as Mario leaves the corner.

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Extremely rare officially licensed 1995 Donkey Kong Country 2 jigsaw puzzle from Japan, featuring original artwork.

Source: blacktangent

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In Mario Kart Wii, the Earth is corrupted while it is not visible.

The Earth model seen in the Nintendo Wi-Fi Connection menu always has a fade-in animation from black before it is shown. If the fade-in is removed, it is revealed that the textures of the Earth are broken, making the continents appear geometric and the oceans appear similar to a television test signal.

It is unknown why the Earth model is implemented in this way whereby the model is loaded separately before the textures, as nothing else in the game works in this manner. Note that these textures are not particularly large and loading times/processing speed is not an issue, as the game regularly loads much more complex models and textures instantaneously.

Source: B_squo

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