826
The calendar in the Toy Box in Super Mario Bros. Deluxe contains three entries when it is unlocked, one commemorating the release of Super Mario Bros. and the other two being extremely vague. Those actually mark the Japanese release dates of Mario Bros. and Super Mario Land.
827
Box of limited-edition 1996 Kellogg's Frosted Mini-Wheats for a Super Mario 64 cross-promotion, featuring unique artwork of the penguins from Cool, Cool Mountain.
828
The graphical data for the kings' chambers in Super Mario Bros. 3 contains an unused sprite of Toad with asymmetrical eyes. Here is a mock-up of the scene with Toad's regular sprite replaced with the unused one.
829
Due to Bowser Jr. appearing almost exclusively in pre-rendered cutscenes in Super Mario Sunshine, his high-quality model is not actually present in the game's files. The only Bowser Jr. model in the data is used in the final battle, and is so low-polygon that it has no mouth.
830
The antagonist of the Game & Watch version of Balloon Fight is an anthropomorphic amphibian called "Oiram Repus", which is "Super Mario" spelled backwards. As there is no apparent connection or resemblance between the two, the reason for the reference is unknown.
831
Cartridge art and title screen of "Mali & Lugi Fighting 2", an unauthorized hack of Chip 'N Dale: Rescue Rangers 2 for the Famicom with Mario graphics. The artwork is taken from the cover of the 1993 Super Mario Compact Disco official music album.
832
An official render of Toadette for Super Mario Maker 2 contains the most realistic depiction of a piece of Nintendo hardware in artwork for a first-party Nintendo game to date: a Joy-Con that is modeled in such detail that it even includes all the legally mandated labeling.
833
Paper Mario and Paper Mario: The Thousand-Year Door start with Parakarry delivering a letter (left). Zooming out the camera in both games after he leaves the screen shows that he never actually exits the scene, instead merely hiding behind a tree or the letterbox bars (right).
834
Texture of the hidden Luigi portrait from World 5-4 of New Super Luigi U, extracted from the game's data. I have previously posted this in 2017; however, the extraction process at the time was imperfect and resulted in distortions in the image. This version is an accurate rip.
835
The Mario planet from Toy Time Galaxy in Super Mario Galaxy is not an accurate recreation of the Small Mario sprite from Super Mario Bros., but a slightly larger, distorted version of it. Left: planet in-game, middle: interpretation of planet as sprite, right: original sprite.
836
The only two appearances of artwork for "Mr. X", an unused character intended to appear in Donkey Kong Country 2, seen in an issue of Nintendo Power and the game's German manual. The text translates to "Mr. X: nobody knows him or has ever seen him anywhere before".
837
In Super Mario Maker 2, the "Super Mushroom" voice sample does not follow the tune of the music in the Super Mario Bros. style, despite doing it in other styles and other samples following the tune in the same style. Thank you to @FaceofCoffee and @RMaster94 for the information.
838
A 1997 British official Nintendo promotional leaflet included with Nintendo 64 game purchases lists Yoshi's Story as "Yoshi's Island 64" and includes a preliminary logo as well as the tagline "Green psycho power for dino freaks!"
839
A 1994 Wario's Woods manga's final battle (left) is against Luigi possessed by Fauster, an evil jester boss (top right). This predates a similar scenario, where Luigi is possessed by the evil jester Dimentio for the final battle in Super Paper Mario (bottom right) by 13 years.
840
Mario could fully submerge in the New Donk City rooftop pool in the E3 2017 version of Super Mario Odyssey (left), prompting journalists to show Mario drowning in it (middle). Possibly in response, in the release version, the pool was made too shallow for Mario to drown (right).
841
Sketches of Yoshi's head and a Baby Yoshi hatching from an egg, drawn by Shigeru Miyamoto for a Japanese official guide for the puzzle game "Yoshi" for the NES/Famicom.
842
In an extra mode of WarioWare Gold, Wario creates crude drawings of various amiibo, among them this picture of Waluigi. This is the only time Waluigi's existence is acknowledged in any game with "Wario" in the title, despite Waluigi often appearing alongside Wario otherwise.
843
Illustration from a 1988 Japanese guide for Super Mario Bros. 3 featuring a more simplistic Boo design than used in the finished game.
844
April Fools joke feature from Expert Gamer magazine that purports to showcase how to evolve a Dragonite into Yoshi in Pokémon Red and Blue.
845
A compilation of internal names used for the various kingdoms in Super Mario Odyssey's code, as well as the internal names of their inhabitants. Some of the names suggest that the original concepts could have been slightly different, such as "Clash World" for the Lost Kingdom.
846
The Toad-like early designs for Princess Toadstool (right) and her otherwise unseen parents (left), previously known to appear only in the "How To Win At Super Mario Bros." guide (top row), have been discovered to also appear in another, even earlier Japanese guide (bottom row).
847
The data for New Super Mario Bros. U contains an unused pepper level icon (left), meant to be used alongside other icons for secret levels (examples on the right). Since all secret level icons reflect the level's contents, it was likely intended for a unique pepper-themed level.
848
Extremely rare official render of Lanky Kong from Donkey Kong 64, seen in an issue of the Spanish "Magazine 64". According to preliminary research, this render appears to never have been published on the Internet in an isolated form before.
849
Artwork of "Small Penguin Mario" from a recurring segment in the British Official Nintendo Magazine. Since Small Penguin Mario does not actually exist in the games, the artwork was created by splicing together renders from New Super Mario Bros. Wii.
850
Follow-up to the previous Tweet: At the request of a reader, I have attempted to recreate the Small Penguin Mario artwork as accurately as possible using the highest-quality versions of the respective source images, resulting in this 1726x1938 pixel high-resolution version.
Additional obscure Mario content for suppermariobroth.com.
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