By popular demand, I have recorded a full 2 loops of the 20 Green Berry music from Super Mario World, which can be found on the Supper Mario Broth YouTube channel! www.youtube.com/watch?v=Pvv9...

In Super Mario World, green berries increase the timer. By strategically eating them to make the timer pass 100 multiple times, the music can be sped up repeatedly. It turns out that the music engine cannot handle more than 20 speed-ups, and slows down to a crawl instead.

In the Mario Party series, an item's name was changed from "Cursed Dice Block" to "Creepy Dice Block". While it may appear to be an unnecessary change to make it more "family-friendly", it is actually an effective localization of the original Japanese name's double meaning.

The Nintendo Switch version of Captain Toad: Treasure Tracker contains a model of a realistic man, called "Male". Despite Male being from a Nintendo 3DS development kit, the Switch version is the only one he appears in.

In Donkey Kong Bananza, all Fractones refer to themselves as "we", suggesting a plurality or hivemind. However, there is one single random Fractone that says "I" instead. While this is likely an oversight, it makes it appear as though that Fractone broke free of the hivemind.

In Super Mario Sunshine, each plank of the Pianta Village bridge has separate collision for an unknown reason. This causes microscopic invisible gaps to form between the planks that extremely unfortunate players can slip through and die. Below is a compilation of such cases.

Experimental Post: Crump's Snack In a battle in Paper Mario: The Thousand-Year Door, Lord Crump runs backstage to seemingly eat a snack of 5 unseen items. I speculate on what his meal could have been, based on the amount of HP he recovered.

An official Mario Kart messaging app sticker contains a one-frame Easter egg. For a fraction of a second during the animation, Mario assumes the same pose he does on the Mario Kart DS box art.

There is a humorous error message in Paper Mario: Color Splash. When loading Luigi, the game does a quick "bone check" to see if his position is defined. If he fails his bone check, the developer console prints out "Luigi is elegal!!", likely a misspelling of "Luigi is illegal".

Official 2002 European Super Mario Sunshine screensaver that features Mario sliding across the screen and periodically turning into his famous "aggressive" render from that game.

A Luigi's Mansion 2 HD keychain of Polterpup was packaged in such a way in Japan that the white backing and bubble wrap made him practically invisible except for his collar, playing into his ghostly nature. Whether this was deliberate or a serendipitous coincidence is unknown.

In the Forest Secret Area in Super Mario World, there are three 1-Ups after the goal that seem impossible to collect without flying, as walking through the goal destroys them. However, there is an extremely simple trick to get them every time: simply press L before touching the goal.

Mario Party contains an obscure "underwhelming victory" scenario. Normally, the winner is celebrated with a special cutscene and declared Superstar. However, if no stars were obtained, no cutscene plays and all the winner gets is text saying "YOU ARE WINNER" before the game ends.

Super Mario Bros. Deluxe includes a calendar that goes all the way to the year 3000. Ironically, this reaches much further than typical modern computer and smartphone calendars. As such, even now Super Mario Bros. Deluxe remains a good option to keep track of far future dates.

In Diddy Kong Racing DS, the message when connection is lost during Download Play is "LOST ALL CHILDREN". The cartridge is internally called a "parent" and the downloaded instances its "children". While this would make sense to the developers, it has the potential to confuse or scare players.

The instrumentation of the Lakitu Info Center music in Mario & Luigi: Paper Jam appears to be a reference to "The Typewriter", a 1950 orchestral composition using a typewriter as an instrument. Below is a comparison of the two.

Promotional photos of My Chemical Romance lead vocalist Gerard Way with Mario from a 2007 interview in the Japanese Crossbeat magazine. He is quoted as saying "I'm drawn to works that are innovative and try new things", which evidently includes Mario.

In Mario & Luigi: Bowser's Inside Story, Mario and Luigi's level-up stat gains are bizarrely based on what level Bowser is currently at. If he is at a "good" level, they will be several times more powerful. The game does not tell you which levels are good and which are bad.

In the Super Mario Galaxy Movie, Rosalina fights Megaleg. However, the real Megaleg from the game is much larger than one would expect and would have made Rosalina almost impossible to see when zoomed out. The size of the one in the movie is closer to Digga-Leg.

In one of the prototype versions of Yoshi's Island, the Baby Mario handover process is unfinished and does not always work. The Yoshi that should be waiting at the end is missing, and the playable Yoshi simply throws Baby Mario onto the ground, making him crawl off by himself.

In Super Mario Sunshine, Shadow Mario's voice is created by applying a filter to Mario's voice; however, he does not use all of Mario's voice clips. By making Mario himself use the filter, we can finally hear Shadow Mario say things like "MAMA hoohahoo wow wow" and "The horror".

Mario Kart: Double Dash contains a bizarre "eternal European pain" glitch whereby being burned when entering a pipe will cause the character to remain in pain indefinitely, but only in the European version.

In Super Mario Sunshine, the differences between surfing Bloopers are presented as a tradeoff between speed and handling, appearing to not have any clear advantage over each other. However, this is not true, and the green Blooper is actually OBJECTIVELY SUPERIOR to the other two.

The code of Super Mario World contains an unused translucent level mode, which causes the environment to appear ethereal and was as such possibly intended for ghost house levels. Below is footage of some ghost houses with the mode enabled.

Since the star collection and post-star collection cutscenes in Super Mario Galaxy 2 have an average length of 30 seconds and a full playthrough collects 240 stars, the player spends at least 2 hours per playthrough simply watching Mario collect stars.

Extremely rare banana putter given out to Nintendo employees who participated in the marketing of Donkey Kong 64.

In Super Mario Sunshine, Mario is immune to bees while talking. He will be pushed around by them, but not be harmed while he's engaged in conversation. Note that he is not simply immune to damage - e.g. he will still die to heat stroke while talking. It is specifically bees.

In Donkey Kong Country 2, it is possible to trap Diddy Kong in a state of eternal horror. Hitting K. Rool with a team-up throw in a specific manner will cause Diddy's eyes to pop out in shock; however, he will never recover and stay in this state until the game is reset.

In Super Mario 64, parts of Lethal Lava Land are actually made out of leather, which simply appears to be stone due to the low resolution of the textures.

In the Nintendo Switch version of Super Mario Galaxy (but not Super Mario Galaxy 2), Mario and Luigi's right hands have been moved away and stored separately from their models for an unknown reason. It is theorized that this is somehow an attempt at optimization.

The "communications terminated" error screen in Super Mario 64 DS and New Super Mario Bros. is uncharacteristically startling, interrupting gameplay with a red error screen and loud siren.

Super Mario World has an extremely eclectic art style whereby many enemies are drawn in completely different ways. Development files reveal Mario went through many stylistic changes; it is possible that all the enemies were made to fit Mario, but at different points in time.

In Super Mario RPG, refusing to give the Baby Yoshi cookies after talking to him in the middle of a jump will cause Yoshi to completely freeze. His only motion will be sliding silently along the ground.

It is possible to break the Frog Flap microgame in WarioWare simply by being too skillful. Red platforms speed up the frog, blue ones slow it down. By skipping red platforms and landing on the blue ones, the frog will eventually start flying and never come back down.

In Super Mario Galaxy 2, the Wigglers on the Tall Trunk Galaxy slide are special slide-only Wigglers that literally cannot exist outside of it. If one of them is allowed to make it all the way up the slide, he will lose his head and become a singularity.

In Super Mario Sunshine, there is a small plant in Gelato Beach that raises a staircase when sprayed with water. In the files, an unused, presumably corrupt animation for it exists that shows it slowly stretching in an unsettling manner.

In Mario & Luigi: Bowser's Inside Story, the characters are deathly allergic to wearing inappropriate clothing. If Mario and Luigi are made to wear Bowser's clothes or vice versa, all their stats drop to 0. It is unknown if this is merely a code quirk or an intentional failsafe.

In Super Mario Bros. Wonder, the Floating High Jump badge is called "Luigi" internally. This means the playable Luigi has to have a different name - "PlayerLuigi". Whenever Luigi wears the badge, it is actually PlayerLuigi wearing Luigi.

The programmers of the Donkey Kong arcade left a message in the code to hackers mockingly congratulating them and offering to teach them as a joke. A group of bootleggers actually took this seriously and contacted the company asking for help pirating their own game.

The Bowser in the Sky skybox from Super Mario 64 is well-known for its ominous appearance. However, it is actually made by combining real sky photos from texture libraries and then color-shifting them. Restoring the image from the original files shows it to be rather serene.

In Super Mario Galaxy 2, the cutscenes on Starship Mario are controlled by a giant floating L in a special cutscene dimension.

In Luigi's Mansion 2 HD, there is a cutscene where a Toad's face textures are shifted upward briefly. While he is facing away from the camera during this, looking at him from the front reveals he has two mouths and no eyes.

In Super Mario Odyssey, there is a single Luigi who is somehow too much for the Nintendo Switch to handle. Bringing the camera close to this 8-bit Luigi in Metro Kingdom at night will cause the game to stutter and slow down to 5 FPS. This is the only Luigi who has this effect.

In Mario & Luigi: Brothership, one of the lines a character says about Dorrie is a warning to not be its lunch. This is a reference to an infamous sign from Super Mario 64 warning of the same fate, which spawned urban legends that it would be possible to be eaten by Dorrie.

Mario & Luigi: Partners in Time contains an unused enemy called the Scoot Bloop, a Blooper whimsically wearing shoes. It has two attacks: a regular one and a "do nothing forever" attack where it just freezes in place and refuses to end its turn, trapping the player indefinitely.

Illustration from a 2023 patent granted to Snap Inc., the developers of Snapchat, showcasing an augmented reality effect that renders a dancing Mario over a user's video.

In Mario Kart: Double Dash, heavy racers are objectively better when racing against the player. While it may seem random which CPUs are the best in any given race, on the highest difficulties, the top team is actually guaranteed to contain one of the five heavy characters.

In a 1996 interview about Super Mario 64, Shigeru Miyamoto said he really wanted to make Mario throw MIPS the Rabbit by his ears, and would have done it if the team had just one more month.

Experimental post: Mode 7? What About Modes 1-6? Some games on the SNES, such as Super Mario Kart, boasted "Mode 7" technology. However, this raises the question of what happened to the previous modes. This post explains them and gives examples of their usage in Mario games.

Piranha Plants in Paper Mario: The Thousand-Year Door are the sleepiest creatures in the game, with some of their subtypes being up to 110% sleepy. This may be a reference to the famously sleepy Piranha Plants from Super Mario 64.