CardboardLuigi's Hell Zone XP

In Donkey Kong Country, a bizarre glitch can happen when riding Enguarde and collecting an Animal Token. Whenever three matching Animal Tokens are collected, a bonus stage featuring that Animal Buddy is briefly entered to collect tokens for extra lives.

However, if the Animal Buddy (Expresso in the footage) clips through the ground and dies during the bonus stage, the game will not return to the regular gameplay prior to collecting the token. Instead, it will restart the game (start the beginning of the first stage, Jungle Hijinxs) using the current characters, which includes Enguarde.

As shown in the footage, this results in Enguarde being controllable in a non-water stage. Due to the game never expecting this to happen, Enguarde still treats the environment as water, allowing him to swim through air.

Unique Yoshi-themed animated cursors available for download from Nintendo's official Mexican site in 2001.

In Paper Mario, the hanging board in Mario's house provides various statistics about the current save file when checked. The "Chuck Quizmo's Quizzes" entry works in a non-intuitive manner. Instead of showing how many quizzes the player has completed out of the total number of existing quizzes (64), it instead shows successful attempts out of total attempts.

As such, the only way to get a perfect 64/64 score is to never answer any questions wrong on that save file. If a question is answered wrong, the number on the right will go up and remain larger than the number on the left forever, so that e.g. after making a single mistake the final score will be 64/65. For players interested in having an aesthetically pleasing 64/64 score, it is necessary to reset the game every time a mistake during a quiz is made.

Huntrix, don't miss, how it's done, done, done! ✨

Illustration from a 2001 issue of Electronic Gaming Monthly magazine, speculating on a possible acquisition of Sega by Nintendo.