:^)

Top: the snowy ground texture in Cool, Cool Mountain in Super Mario 64 is blurry and yellowish, not recognizable as anything specific.

Bottom: it turns out that it is actually a stock proto of a blanket from a commercial texture CD, made more blurry and recolored. Interestingly, the original blanket's color would also have fit for the purpose of making snowy ground, but the color was likely introduced to give some visual variety to the environment and to keep all ground in the course from being some shade of light blue.

Source: Render96, Leonard85026417

In Paper Mario, the Master has an unused, unfinished attack found in his code whereby he flies at Mario and then appears to be stuck in mid-air, doing nothing. This would at first seem to be simply completely broken and require the game to be restarted, but waiting 5 and a half minutes will actually make him complete the attack and do damage (most of the waiting time cut out in the footage). He will also remain in mid-air next to Mario on the next turn after this.

This is due to the fact that the attack takes 10,000 frames to complete, which is around 5 and a half minutes at the game's 30 frames per second framerate. While broken and unfinished moves are nothing out of the ordinary for RPGs, it is rare to find a move that appears to freeze the game but actually manages to complete in an unreasonably long amount of time.

Source: elDexterr

I don't have any experience with the weirder corners of university campuses – my work in that particular job just never happened to take me there. I did, however, once have to do a cable trace in the basement of a former Christian elementary school. It had haphazardly been subdivided into numerous tiny rooms, some as little as ten feet across, with no central hallways or apparent floor plan. Every single room was, for reasons that were and remain unclear to me, full of broken kitchen appliances. One room in particular contained an enormous industrial freezer unit that was larger in its smallest dimension than any of the doors leading to it. Was it delivered in pieces and assembled on site? Did they build the room around it? That one still bothers me a little bit.

Unique illustration of the Super Mario Bros. characters celebrating, used for a 1987 calendar in the Japanese Wanpakku magazine.

Source: its.a.me.scanio, historyofhyrule

Top: the 2-Up Mushroom is an extremely rare version of the 1-Up Mushroom that grants two extra lives, seen only in the bonus minigames of the original Game Boy Advance version of Mario vs. Donkey Kong, and never again. The Nintendo Switch version of the game replaced it with a chest that contains separate regular 1-Up Mushrooms instead.

Bottom: however, a model of the 2-Up Mushroom can be found unused in the files of the Nintendo Switch version, providing a look at how it would have appeared in 3D. Interestingly, it not merely recolors the green of the 1-Up Mushroom's cap, but also has a different shade of white for the spots, and a different stem color.

Source: DogToon64

Top: the intro scene for the Kamella boss battle in Deep Dark Galaxy in Super Mario Galaxy features her floating down from a moon-like planetoid in a cinematic manner.

Bottom: however, it is possible to view this scene in an unintended "Fire Moon" state whereby the sky will be red and the moon will appear to be glowing, resembling a sun at sunset.

For this, the cannon at the beginning of the stage must be used to shoot Mario into a specific point in the top left of the cannon range, whereby he will clip into the wall. From there, he can swim all the way to Kamella's boss arena without activating the skybox change that turns it from the orange sky seen at the beach to the green sky seen in the cave. The orange sky was never meant to be loaded together with the moon, giving it this "Fire Moon" appearance.

Source: FTGalaxy-q5z