Within the game's data are unused voice clips for a solo boss fight against Professor Calamitous, who in the released game only appears during the final battle against the full Syndicate. Some of these clips feature Calamitous threatening to destroy Retroville with a doomsday device, a subplot not present in the final game. This implies that Jimmy Neutron's route was originally going to follow the same formula as Danny Phantom, SpongeBob SquarePants, and Timmy Turner's routes, in which the team visits an individual character's world and foils a villainous scheme by an individual member of the Syndicate there. This is corroborated by a pre-release screenshot in which the monochrome Retroville simulation seen in "Fantastic Voyage of Goddard" is instead in full color.
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.
The design of this game's park entrance differs depending on what platform and also what graphics setting you're playing on. On the higher graphical settings on PC, it is modeled after the Visitor Center from the movie and also incorporates the traditional iconic Jurassic Park gate. On consoles and also on lower graphical settings on PC, it instead features a far smaller and compact building instead of the Visitor Center, and the Jurassic Park gate's design is modified to also include the Tyrannosaurus skeleton emblem iconic to the series as well as a bunch of ferns.
The now defunct Jurassic Park Institute website featured what appeared to be an unused 3D model of a Chasmosaurus for Jurassic Park: Operation Genesis. This would line up with the developer's comments about wanting to include more dinosaur species outside of the 25 present in the final game, although curiously, this species is not mentioned within the game's "Constant.ini" file, which mentions dozens of other unused dinosaur species.
The development team for this game experimented with baby dinosaurs midway through the project, attempting to use schemes such as scaling the adult dinosaurs down to make them infants. The team realized that this didn't look right and that making proper infant dinosaurs would require new models and AI, which would be similar to the work required for adding more dinosaur species. As a result, baby dinosaurs were dropped, along with any ideas for a "Dino Petting Zoo".
The final version of Jurassic Park: Operation Genesis includes only 25 dinosaur species. However, the development team had originally hoped to include 40 species very early on, with many of them implied to be sea-dwelling and flying creatures. Ultimately, this was whittled down to the 25 dinosaurs seen in the final game due to time constraints, and also the developers wanting to focus on creating fewer, but more interesting dinosaurs, as opposed to a larger number of less interesting dinosaurs. As such, they decided to make the dinosaurs they had count and focus on species that players would recognize from the films.
Only the PlayStation 2 version of the game includes proper shadows for the dinosaurs and guests. In earlier versions, shadows were originally apart of all entities (which also includes buildings and foliage) in at least the PC version of the game.
In a 2019 interview with Game Center CX host Arino Kacho, director and series creator Shigesato Itoi revealed that Ninten's asthma was inspired by his own experiences with the disease. According to Itoi, he would often play video games late at night while trying to fall asleep sitting up, as lying down would induce severe coughing fits. This resulted in him developing an interest in making a game with Nintendo, to whom he felt "indebted" for keeping him busy during a difficult part of his routine. Once development on Mother started, Ninten's asthma was one of the first traits that Itoi came up with. Itoi stated:
"I wanted a weak hero. The main character in Mother has asthma, and his dad is never around. That was the setup I had in mind when wondering what kind of adventure story I could make."
A port of Bubsy 2 to the Sega Game Gear was planned and seemingly completed, but never released. In the surfaced screenshots of the game's prototype, it appears to be a fully colorized version of the Game Boy version (playing the Game Boy version of Bubsy 2 on a Super Game Boy will give the graphics a slight red tint).
Race Ace is the only game in Don't Buy This to have been released as an individual cassette prior to the compilation's release, credited to Tony Rainbird, who helped create the Firebird label that Don't Buy This was published under, meaning its inclusion may have been an in-joke.
In the source code for Bubsy in Fractured Furry Tales, a string of text can be found reading "no smutty comments please", suggesting there were previously inappropriate developer comments in the code thet were deleted.
There is an unused death cutscene in the files of Bubsy 3D of Bubsy falling through a floor. This may have been an animation for falling through pits, or suggest that fall-damage was at one point going to return as a mechanic from Bubsy in Claws Encounters of the Furred Kind.
In November 2023, Steel Wool Studios published a PlayStation 5 and PlayStation VR2 exclusive version of Five Nights at Freddy's: Help Wanted with the subtitle "Full Time Edition." In this version of the game, the Hardmode versions of Freddy and Bonnie's Parts and Service levels changed the appearance of Freddy and Bonnie, known by the names "Dark Freddy" and "Neon Bonnie." Instead of the normal black coat seen in the other versions of the game, Dark Freddy and Neon Bonnie can be seen coated in white. It is unknown why this change was made in this version of the game, or why Chica and Foxy were left untouched.
The developers of Bubsy in Fractured Furry Tales got very agitated with having to listen to Bubsy's catchphrases on loop, and would repeat them to one another mockingly. For one of producer Faran Thomason's co-workers, Bubsy's catchphrase "What could possibly go wrong?" became a 20-year long in-joke with other developers of the game (in spite of said catchphrase not even being said in Fractured Furry Tales outside of the ending text scroll).
Bubsy in Fractured Furry Tales was originally intended to be a straight port of Bubsy in Claws Encounters of the Furred Kind to the Atari Jaguar, owing to the Jaguar's hardware similarities to the Sega Genesis. It was ultimately decided that, due to the age of Claws Encounters at the time, it would instead be a new game built off of the older game's engine. Accolade were not able to provide source code for Bubsy 2 due to it not having been completed at the time.
Good-Feel being the development company behind Princess Peach: Showtime! was not officially revealed until the day before the game's release, where it was discovered via the game's credits. It was also revealed through the credits that the game had been directed by Good-Feel president Etsunobu Ebisu, who had not directed a game since Mystical Ninja Starring Goemon in 1997. Two weeks prior to this, however, Good-Feel's involvement was leaked via the code from the game's demo version. When asked who the development company was, Nintendo merely stated that it would be revealed in the game's credits.
BoKe Travelog was a PC browser game released exclusively in China that ran from 2011 to 2013 before shutting down. The game was very clearly inspired by Poptropica, though notably included a background story for the game's events, unlike Poptropica. Set in an alternate timeline where climate change forced humans to move from land to sea due to rising water levels, it follows a group of people known as "BoKe" as they confront the evil Dr. Hedra, who wishes to take over the world and has begun attacking the various islands left from the climate change to do so. The game also featured various visual similarities to Poptropica, namely with its map layout and the plots of each island, though it did use its own spin on the character designs.
BoKe Travelog had eight islands, each one of which was based on an island seen in Poptropica. The islands were:
• "Potato Island", based on "24 Carrot Island". • "Octopus Island", based on "Shark Tooth Island". • "BoKe Island", based on "Early Poptropica Island". • "Time Tangled Island", based on the island of the same name. • "Haunted House Island", based on the mini-quest of the same name. • "Diamond Island", based on "Counterfeit Island". • "Superman Island", based on "Super Power Island". • "Battle Island", which had various aspects of Poptropica's multiplayer interactions, such as the Paint war, Hoops, and Pathwise minigames.
Also like Poptropica, a book series based on BoKe Travelog (called "Mystery Island Adventures") was released, featuring stories unrelated to the in-game islands. The game was ultimately shutdown on December 22nd, 2013 according to a news post on the site: while the post does not state why it was shutdown, it emphasized that it was a difficult decision to end the game.
Shortly after the game's release, a screenshot started circulating online depicting the Seagallop ferryman in Vermilion City telling the player: "By the way: if you like this game, buy it or die." Those who posted the screenshot claimed that it was a hidden message which was only triggered if the game detected that it was running a pirated copy. This claim appeared to be further corroborated by people claiming that they had encountered the message themselves when playing the game with unofficial Game Boy Advance emulators or when hacking legitimate cartridges with cheat devices, and attracted further popularity after being disseminated by various gaming YouTubers.
However, while the screenshot was not photoshopped, the claim that it was an anti-piracy measure was not true. Rather, the text was added into the game's code by an anonymous individual who distributed a ROM of it online; the claim that it was an anti-piracy feature was most likely used by the individual to circumvent ROM distribution sites' restrictions on modified games. This explains why anecdotal reports of encountering the text were so much higher than what would be expected from a complete hoax, as well as why the text is absent when examining an unaltered ROM of the game in a hex editor.
The song "Red and Blue" was originally composed by Silentroom, then known under the alias "Polycube" for Sound Voltex III: Gravity War's "The First VOLTEX Character Theme Song Contest" in 2014. However, the song was unable to be submitted due to missing the deadline. It was later added and repurposed for Arcaea in the 1.5.0 update.