Behind-the-scenes pictures from the game's development show that former wrestler Jeff Jarrett did green screen capture work for appearing in the game as a playable character. However, due to his departure from the WWF (now known as the WWE) in 1995 regarding a contractual dispute before the game's release, he was subsequently removed from the roster.
The Dragon Quest-esque overworld area, colloquially known as FC World, features a large island on the right-hand side of the map that is not accessible during the normal course of play despite taking up the majority of FC World's land mass. No events or exits are associated with this island, popularly known as FC World C, meaning that hacking the game to place Madotsuki there would prove fruitless.
Despite this, there is evidence that this area was meant to be explorable at one point in development. In the Version 0.09 build (the last one before the "final" Version 0.10 release in 2007), the Dense Woods and Windmill World areas feature the player character from the minigame NASU as an NPC; however, a flag is set to render it invisible (and therefore non-interactable). If the player uses RPG Maker 2003's debugging tools to render the character visible, interacting with it teleports Madotsuki to another unused area in FC World, a small island with four statues on it and an exit at the bottom. Going through this exit takes Madotsuki to FC World C.
While FC World C is still as barren as in other versions of the game, the unused chain of events leading up to it in Version 0.09 indicates that the area was intended to play some kind of role in the final game and that Kikiyama continued to try implementing it late into the game's update history.
At the time of its release, Jurassic Park: Operation Genesis had managed to include nearly every on-screen prehistoric species found in the movies released up to that point ("Jurassic Park", "The Lost World: Jurassic Park" and "Jurassic Park III"), with only three notable exceptions:
•Pteranodon (featured in "The Lost World: Jurassic Park" and "Jurassic Park III") •Compsognathus (featured in "The Lost World: Jurassic Park" and "Jurassic Park III") •Mamenchisaurus (featured in "The Lost World: Jurassic Park")
Interestingly, out of this batch, the Iquanodon is the only dinosaur to have any more data pertaining to it with its own "Iguan.ini" file, which makes it the only cut species with a known Length (Aprox. 9 Meters Long), Health (500), Life Span (4 Years and 6 Months), and Herd Size (1-15 Individuals). It also had a known attack damage (150), which would have it made it the strongest Ornithopod in the game had it been included.
Within the 2023 Insomniac Games ransomware leak, a PC developer build of the game was found to include several unused Symbiote bosses, including Riot, Lasher, Agony, and Phage. These characters were intended to appear as a team alongside the main antagonist, Venom. However, during development, the game’s story likely underwent changes and the focus shifted to other characters, such as Kraven and Venom. As a result, the Symbiotes besides Venom, Scream, and Anti-Venom were abandoned.
There are unused files in the original version of Shipwrecked 64 that suggest that the character Olive Otter was originally planned to be playable, but was scrapped.
Originally, the game was going to have a "Nightmare Segment", where after Bucky falls asleep, he would find himself in a strange place being hunted by a Vulture, representing his fear of death. If Bucky was caught during this sequence, he would sleep in by three hours, hindering the player's time to escape the island. It was scrapped because creator Squeaks D'Corgeh couldn't find a good gameplay loop to justify the segment's existance, and didn't want to add any filler content.
There are fully functional unused Diggin' Chuck, Bullet Bill, Fishbone, and Spiny enemies in the code of Hummer Team's Super Mario World, as well as sprites for crushers, Lakitu, and Clappin' Chuck without associated coding.
The concept of Mario riding a dinosaur was first concieved for Super Mario Bros., but was considered impossible from a technical standpoint. Eventually, this concept would be used in Super Mario World with Yoshi.
Both Mach Rider's identity and gender are ambiguous. They are portrayed with a muscular build, and the NES and Famicom versions' manuals never use any gendered pronouns to refer to them. The arcade port Vs. Mach Rider's stage clear screens slowly introduce piece-by-piece an image of a skimpily-dressed woman (bearing similarities to Jane Fonda's appearance in the 1968 film Barbarella) holding a dagger, but it is never specified if this character is Mach Rider, or one of the other wasteland survivors. However, Mach Rider's trophy description in Super Smash Bros. Melee years later lists them as a male character with he/him pronouns. Even later on, Captain Rainbow, a game centered around obscure and neglected Nintendo heroes, has an unused model for Mach Rider that, while not having visible breasts due to wearing armor, portrays them with a feminine skinny waist.
In the files of the Donkey Kong Adventure expansion, there are unused files for Rambi the Rhino as a party member, including a model; menu icons; and skills. He would have taken up two spaces on the board and been able to charge through any destructible terrain that enemies are using as cover and destroy it instantly. In the final DLC, Rambi would not appear physically in any form, but would have a gun made in his image. Rambi's model looks closer to his appearance in Rare's Donkey Kong games than his appearance in the Paon and Retro Studios Donkey Kong games, a design change that would also be carried over to Super Nintendo World's iteration of the character after Donkey Kong Adventure's release.
In a 2023 leak of unreleased content from different iOS games, an app titled Angry Birds Island - or alternatively Angry Birds Hatchery - was discovered. The prototype was simply a version of the original Angry Birds with two major differences •A mode called "Hatchery", which shows an overworld map of an island with a row at the bottom of toys and furniture •The first two worlds of the original game, but with an option to select from a set of birds, all of which appear to be hybrids of the regular birds This seemingly implies some kind of pet simulator mode with an egg breeding mechanic, not unlike the Chao Gardens from the Sonic Adventure series. It is unknown if this was planned as an update for Angry Birds or a new spin-off.
Nickelodeon All-Star Brawl 2, like the first game, contains unused calls from the announcer. Interestingly, a good chunk of these voice calls are for characters who could be clones or otherwise have a similar body shape to playable fighters, such as DoodleBob, Dark Danny Phantom, Nermal, Abrasive SpongeBob, Squilliam Fancyson, and La Tigresa. Perhaps most interestingly, Lucy Loud's ghost ancestor, Lucille Loud, is the only The Loud House character with an unused announcer line, despite the show's protagonist Lincoln having been cut from the first NASB and the show being based on a large ensemble cast of sisters. Michelangelo and Leonardo are the only cut veterans from the first game with unused announcer voice clips. None of them are from new shows, with a technical exception in the form of the name "Tak", which most likely refers to the Invader Zim character, as she would fit a clone role being an Irken invader like Zim, but could also potentially be for the titular character from the Tak series, though this is unlikely given that the game series had effectively been abandoned by Nickelodeon following the cancellation of its animated series in 2009.
Strangely, before the unused voice lines were dumped and publically uploaded to the internet, an almost entirely accurate list circulated online with Goku from Dragon Ball listed as an announcer call, likely a meme-based in-joke regardless of if it is real or fake, a name which was not included when the voice calls got datamined proper.
The Noise, Pepperman, and The Vigilante were all planned to be playable at some point - Vigilante and Noise were both intended to be regular playable characters, while Pepperman was intended as a one-level only character on Refrigerator-Refrigerador-Freezerator, much like Gustavo & Brick. All 3 of them have code and animations left over in the game, of varying compatability. The Noise would later be re-added in a future update due to all of his animations being completed.
Leftover files for Yoshitaka Mine, the antagonist of Yakuza 3, can be found in the files for Yakuza Kiwami, suggesting that he may have been planned to appear in a substory in a similar way to how Yakuza 2's main antagonist, Ryuji Goda, was a substory character in Yakuza 0.
Treasure president Masato Maegawa and Alien Soldier director Hideyuki Suganami had big ideas in mind for the potential of the game's bosses, with two ideas being thrown around to add a boss with 100 or even 1000 transformations, or a boss with 100 moving/multi-jointed parts. Neither of these ideas were added due to time constraints, but Maegawa still took pride in this early idea for motivating them to further develop the multi-jointed sprite animations in the final game.
In 2013, a Kingdom Hearts online mobile game was in development that never saw the light of day. It was to be called "Kingdom Hearts: Fragmented Keys". The game was rumored to feature customizable avatar characters (like Union Cross). It would also have been in 3D instead of Union cross' 2D art style. Most interesting and exciting of all though (gathered from concept art no less) was the Disney world list as the game would feature returning worlds like: Agrabah, Wonderland, a Lilo & Stitch Hawaii world, Space Paranoids/The Grid, London/Neverland, and Dwarf Woodlands. It also included worlds that didn't appear in the series yet but would appear in later games like Union Cross and Kingdom Hearts III, such as: Arendell (Frozen), Kingdom of Corona (Tangled), and Niceland/Game Central Station (Wreck-It Ralph). Finally, and most shockingly, a world based on the Star Wars franchise, although this world's chronology is unknown as concept art show different conflicting eras, such as an image of characters Anakin, Obi-wan, Padme, and Master Yoda in their exact looks from Star Wars: The Clone Wars movie and series in a separatist gunship's hanger as well as a planet that looks similar to Tatooine and an anachronistic Death Star power station room. It is unknown why this game was cancelled.
If one moves Hank's Microsoft Agent actor file into the the main Microsoft Bob application, he can be used as a main Bob assistant, complete with his own character bio, suggesting that he was meant to be part of the wider Microsoft Bob program. Some of his text is generic placeholders and he does not have a background (instead using a close-up of what appears to be his knee or elbow).
Various models and textures of Ittle Dew from Slap City are inside the files of Nickelodeon All-Star Brawl, as she was used as a placeholder during development.
The Dragon Quest-esque overworld area, colloquially known as FC World, features a large island on the right-hand side of the map that is not accessible during the normal course of play despite taking up the majority of FC World's land mass. No events or exits are associated with this island, popularly known as FC World C, meaning that hacking the game to place Madotsuki there would prove fruitless.
The concept of Mario riding a dinosaur was first concieved for Super Mario Bros., but was considered impossible from a technical standpoint. Eventually, this concept would be used in Super Mario World with Yoshi.
Both Mach Rider's identity and gender are ambiguous. They are portrayed with a muscular build, and the NES and Famicom versions' manuals never use any gendered pronouns to refer to them. The arcade port Vs. Mach Rider's stage clear screens slowly introduce piece-by-piece an image of a skimpily-dressed woman (bearing similarities to Jane Fonda's appearance in the 1968 film Barbarella) holding a dagger, but it is never specified if this character is Mach Rider, or one of the other wasteland survivors. However, Mach Rider's trophy description in Super Smash Bros. Melee years later lists them as a male character with he/him pronouns. Even later on, Captain Rainbow, a game centered around obscure and neglected Nintendo heroes, has an unused model for Mach Rider that, while not having visible breasts due to wearing armor, portrays them with a feminine skinny waist.
Although the Spiky-eared Pichu obtainable in the Ilex Forest event has a shiny form, this form cannot be obtained in the game itself without hacking.
In the files of the Donkey Kong Adventure expansion, there are unused files for Rambi the Rhino as a party member, including a model; menu icons; and skills. He would have taken up two spaces on the board and been able to charge through any destructible terrain that enemies are using as cover and destroy it instantly. In the final DLC, Rambi would not appear physically in any form, but would have a gun made in his image. Rambi's model looks closer to his appearance in Rare's Donkey Kong games than his appearance in the Paon and Retro Studios Donkey Kong games, a design change that would also be carried over to Super Nintendo World's iteration of the character after Donkey Kong Adventure's release.
In a 2023 leak of unreleased content from different iOS games, an app titled Angry Birds Island - or alternatively Angry Birds Hatchery - was discovered. The prototype was simply a version of the original Angry Birds with two major differences
In 2013, a Kingdom Hearts online mobile game was in development that never saw the light of day. It was to be called "Kingdom Hearts: Fragmented Keys". The game was rumored to feature customizable avatar characters (like Union Cross). It would also have been in 3D instead of Union cross' 2D art style. Most interesting and exciting of all though (gathered from concept art no less) was the Disney world list as the game would feature returning worlds like: Agrabah, Wonderland, a Lilo & Stitch Hawaii world, Space Paranoids/The Grid, London/Neverland, and Dwarf Woodlands. It also included worlds that didn't appear in the series yet but would appear in later games like Union Cross and Kingdom Hearts III, such as: Arendell (Frozen), Kingdom of Corona (Tangled), and Niceland/Game Central Station (Wreck-It Ralph). Finally, and most shockingly, a world based on the Star Wars franchise, although this world's chronology is unknown as concept art show different conflicting eras, such as an image of characters Anakin, Obi-wan, Padme, and Master Yoda in their exact looks from Star Wars: The Clone Wars movie and series in a separatist gunship's hanger as well as a planet that looks similar to Tatooine and an anachronistic Death Star power station room. It is unknown why this game was cancelled.
If one moves Hank's Microsoft Agent actor file into the the main Microsoft Bob application, he can be used as a main Bob assistant, complete with his own character bio, suggesting that he was meant to be part of the wider Microsoft Bob program. Some of his text is generic placeholders and he does not have a background (instead using a close-up of what appears to be his knee or elbow).
