Trivia Browser
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Various Easter eggs are hidden in the game's character files, most of which require their extensions to be manually altered:
• If the player changes the extension for Monika's character file to .png, the resulting image depicts a square of white noise inside a ring of fire and cracks. Converting the white noise to binary gives a text message encrypted in Base64. Decrypting it reveals what appears to be a monologue from Monika, who mentions a "Third Eye" that causes "some kind of deja vu," which is how she and the other girls are able to perceive alterations to the game's data.
• If the player changes the extension for Natsuki's character file to .jpeg, the resulting image file depicts a painting of a white-haired girl with blank white eyes. The image is heavily distorted, requiring the player to invert its colors and change its rectangular coordinates to polar ones in an image editor in order to view it properly.
• If the player changes the extension for Sayori's character file to .ogg, the resulting audio will become a discordant shriek, similar to that normally heard when converting a data file to audio. However, running sayori.ogg through a spectrograph reveals a QR code which, when scanned, leads to a fictitious examination report for a character named Libitina; her last name and a procedure administered to her are both redacted with a series of X's. Of note is that like Monika's hidden monologue, the report repeatedly mentions a "third eye."
• If the player opens Yuri's character file in a text editor, the result will be a message encrypted in Base64; the file extension does not need to be modified in order to do this. Decrypting the message reveals that it's "I Found a Box Containing the Story of a 19-Year-Old Girl Who Killed a Random Person for No Reason", a creepypasta that was anonymously posted on Thought Catalog in June 2015, over two years before Doki Doki Literature Club's release. In a Twitter reply, developer Dan Salvato confirmed that he was the creepypasta's author and the one who hid it in the game.
• If the player changes the extension for Monika's character file to .png, the resulting image depicts a square of white noise inside a ring of fire and cracks. Converting the white noise to binary gives a text message encrypted in Base64. Decrypting it reveals what appears to be a monologue from Monika, who mentions a "Third Eye" that causes "some kind of deja vu," which is how she and the other girls are able to perceive alterations to the game's data.
• If the player changes the extension for Natsuki's character file to .jpeg, the resulting image file depicts a painting of a white-haired girl with blank white eyes. The image is heavily distorted, requiring the player to invert its colors and change its rectangular coordinates to polar ones in an image editor in order to view it properly.
• If the player changes the extension for Sayori's character file to .ogg, the resulting audio will become a discordant shriek, similar to that normally heard when converting a data file to audio. However, running sayori.ogg through a spectrograph reveals a QR code which, when scanned, leads to a fictitious examination report for a character named Libitina; her last name and a procedure administered to her are both redacted with a series of X's. Of note is that like Monika's hidden monologue, the report repeatedly mentions a "third eye."
• If the player opens Yuri's character file in a text editor, the result will be a message encrypted in Base64; the file extension does not need to be modified in order to do this. Decrypting the message reveals that it's "I Found a Box Containing the Story of a 19-Year-Old Girl Who Killed a Random Person for No Reason", a creepypasta that was anonymously posted on Thought Catalog in June 2015, over two years before Doki Doki Literature Club's release. In a Twitter reply, developer Dan Salvato confirmed that he was the creepypasta's author and the one who hid it in the game.
The Cutting Room Floor article:
https://tcrf.net/Doki_Doki_Literature_Club!#Characters_Folder
Hidden website in sayori.chr:
https://projectlibitina.com/
Tweet from Dan Salvato confirming his authorship:
https://www.twitter.com/dansalvato/status/911627120132055040
https://tcrf.net/Doki_Doki_Literature_Club!#Characters_Folder
Hidden website in sayori.chr:
https://projectlibitina.com/
Tweet from Dan Salvato confirming his authorship:
https://www.twitter.com/dansalvato/status/911627120132055040
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One of the Sleep Mode screens, which depicts Mario and Luigi having a picnic in World 4-3, is based on a piece of concept art originally drawn for The Super Mario Bros. Movie, and was included in this Game & Watch over two years before the film's 2023 release. The original image is showcased in one of the bonus features on the film's home media release, "Meet the Cast: Charlie Day as Luigi". Among other differences, the concept art features Mario & Luigi sitting on mushrooms instead of blocks and wearing their modern outfits instead of ones matching their in-game sprites.
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Franchise: Sonic The Hedgehog
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Sometimes when items are scanned at American gas stations, the sound effect when Sonic collects rings will play on the cash register. It is not known why this sound effect is used, but it's theorized that it stems from Sega's parent company, Sega Sammy Holdings, having some kind of involvement with Gilbarco Veeder-Root, an American technology company that produces point of sale/payment systems and fuel dispensers. The software used in cash registers produced by the company, Gilbarco Passport, is widely used at convenience stores across the United States and was developed by an unspecified third party, which could be Sega Sammy Holdings. The reason why the Sonic ring sound effect was specifically used is likely a result of the merger between Sega and Sammy Corporation allowing the latter to own the rights to some Sega IPs like Sonic the Hedgehog and primarily use them for pachinko machines.
Explanation on YouTube:
https://www.youtube.com/watch?v=VKa0U3CSTuA
Explanation on TikTok:
https://www.tiktok.com/@johnnybonegaming/video/7206110246652185898
https://www.youtube.com/watch?v=VKa0U3CSTuA
Explanation on TikTok:
https://www.tiktok.com/@johnnybonegaming/video/7206110246652185898
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The original release of the 1988 DOS version of Tetris features an animation on the title screen where a white Cessna airplane flies over the title logo; after the opening scroll, it reappears while dragging a banner that reads "PLAY TETRIS!" This sequence references Mathias Rust, a West German teenager who illegally piloted a Cessna from Uetersen Airfield to Moscow the previous year in an attempt to relieve tensions between the United States and Soviet Union, landing near Red Square.Rust's flight was a major embarrassment for the Soviet military due to him disproving the notion that their defenses were ironclad. Consequently, later revisions of the game removed the animation on orders from ELORG, the Soviet Union's state-sponsored computer company and the owners of the Tetris license at the time.
The Cutting Room Floor article:
https://tcrf.net/Tetris_(DOS,_Spectrum_HoloByte)#Title_Screen
Smithsonian Magazine article:
https://www.smithsonianmag.com/air-space-magazine/the-notorious-flight-of-mathias-rust-7101888/
BBC article:
https://www.bbc.com/news/magazine-20609795
https://tcrf.net/Tetris_(DOS,_Spectrum_HoloByte)#Title_Screen
Smithsonian Magazine article:
https://www.smithsonianmag.com/air-space-magazine/the-notorious-flight-of-mathias-rust-7101888/
BBC article:
https://www.bbc.com/news/magazine-20609795
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The Poodle Plush collectible item is based on Percy Poodle, the titular antagonist of the Five Nights at Freddy's fangame Playtime with Percy. Rambley alludes to this when presenting the plush to him at the Information Kiosk, noting how it's a "non-Indigo-brand toy", and claiming that it would "make playtime special for a child with poor taste".
Indigo Park - collectible descriptions:
https://www.youtube.com/watch?v=O6w3-7zYPJk?t=172
Playtime with Percy trailer:
https://www.youtube.com/watch?v=laxkoLgecVs
https://www.youtube.com/watch?v=O6w3-7zYPJk?t=172
Playtime with Percy trailer:
https://www.youtube.com/watch?v=laxkoLgecVs
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When Orka uses her pummel, bone effects will come out of the victim. However, if Orka is pummeling Ittle Dew, she will only produce one bone, as Ittle only has one bone in her body in her original games.
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In an interview that Toby Fox conducted with the Chapter 2 development team, Taxiderby, one of the game's programmers, stated that the Spamton cherub that appears when pressing F1 during the Spamton and Spoiler:Spamton NEO fights was a spur-of-the-moment suggestion. According to them, Spamton's line "[Press F1 For] HELP" was already written, but it was originally a meaningless non-sequitur. After Fox suggested the idea of giving F1 an actual function in the fight, Taxiderby came up with the Final Fantasy-inspired Easter egg, putting it in singlehandedly after Fox gave his approval for the idea. In the same interview, they stated that they were surprised by its popularity, having made it purely as a throwaway gag.
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Although Chapter 1 was given a surprise release in 2018, with Toby Fox giving no prior public indications of its existence, Deltarune had been teased in secret since at least 2015. Three months after Undertale released, the fan site DeltaRune.com announced that it would be rebranding to Dreemurr.com at Fox's request; Fox didn't tell the owners of Dreemurr.com why he didn't want them to use the domain. However, after the fan site fulfilled his request, Fox used deltarune.com to host an image called him.png, a passage of Wingdings text only readable by turning up the brightness using image editing software.While the text initially parroted the phrase "THIS NEXT (space) EXPERIMENT (space) SEEMS (space) VERY (space) VERY (space) INTERESTING" from the unused room_gaster event in Undertale, by July 1, 2016, the text was edited to read "THREE HEROES APPEARED (space) AT WORLD'S EDGE", later being edited again by August 17 to say "THREE HEROES APPEARED (space) TO BANISH THE ANGELS HEAVEN". Both revisions quote portions of the legend that Ralsei recounts in Chapter 1, indicating that these parts of the game's backstory were already conceived by this point.
Following the release of Chapter 1, deltarune.com would be refurbished as the official website for Deltarune itself. Consequently, earlier versions of the site only survive through snapshots on the Wayback Machine, a URL archiving platform hosted by the Internet Archive.
The Cutting Room Floor article:
https://tcrf.net/Prerelease:Deltarune
Comments section and screencap of the now-deleted r/Undertale post:
https://www.reddit.com/r/Undertale/comments/3vxmhq/dreemurr_31_faq/
https://tcrf.net/images/d/db/Deltarune-dreemurr-com-originally-deltarune-com.png
December 9, 2015 Wayback Machine snapshot of him.png:
https://web.archive.org/web/20151209013205/http://www.deltarune.com/him.png
July 1, 2016 Wayback Machine snapshot of deltarune.com (Note: this archive is not displaying correctly as of May 13, 2024):
https://web.archive.org/web/20160817183540/http://www.deltarune.com/
August 17, 2016 Wayback Machine snapshots of deltarune.com and him.png:
https://web.archive.org/web/20160817183540/http://www.deltarune.com/
https://web.archive.org/web/20161221070931im_/http://www.deltarune.com/him.png
Tweets by @ChristopherMoom:
https://twitter.com/ChristopherMoom/status/1334580988521934850
https://twitter.com/ChristopherMoom/status/1334562885461307395
https://tcrf.net/Prerelease:Deltarune
Comments section and screencap of the now-deleted r/Undertale post:
https://www.reddit.com/r/Undertale/comments/3vxmhq/dreemurr_31_faq/
https://tcrf.net/images/d/db/Deltarune-dreemurr-com-originally-deltarune-com.png
December 9, 2015 Wayback Machine snapshot of him.png:
https://web.archive.org/web/20151209013205/http://www.deltarune.com/him.png
July 1, 2016 Wayback Machine snapshot of deltarune.com (Note: this archive is not displaying correctly as of May 13, 2024):
https://web.archive.org/web/20160817183540/http://www.deltarune.com/
August 17, 2016 Wayback Machine snapshots of deltarune.com and him.png:
https://web.archive.org/web/20160817183540/http://www.deltarune.com/
https://web.archive.org/web/20161221070931im_/http://www.deltarune.com/him.png
Tweets by @ChristopherMoom:
https://twitter.com/ChristopherMoom/status/1334580988521934850
https://twitter.com/ChristopherMoom/status/1334562885461307395
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At the very beginning of Appendix v. The Lost Falls, after Ida presses the first switch in the level to raise the pillar the Totem is on up to where she is, a set of symbols carved into two sides of the pillar are revealed. These symbols are part of the ancient Zuish language from the game Fez, but they are used incorrectly in order to fit the message on the pillar (i.e. vertical spelling, no use of spaces, line breaks in the middle of words). When translated, it spells out this message:TOSR
ONDO
GEAU
OINS
ATG
LIE
"TO GO ALONE IT IS DANGEROUS"
ONDO
GEAU
OINS
ATG
LIE
"TO GO ALONE IT IS DANGEROUS"
This not only acts as a reference to the popular quote at the start of The Legend of Zelda to show Ida receiving help, but also acts as foreshadowing to the end of the level where Spoiler:the Totem is destroyed by a crushing stone pillar while helping Ida get past it, forcing her to go through the rest of the Forgotten Shores levels on her own.
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In 2014, developer Danny Gray revealed while promoting Monument Valley at its release that there was a single Easter egg hidden in the main game. It would eventually be discovered and then confirmed by Gray two years later that this secret was in the green room of the main game's final level X. Observatory, where a green model of an Arwing from the first Star Fox game can be found floating near some debris in the bottom-right corner of the area.
Easter egg reveal:
https://www.reddit.com/r/iosgaming/comments/227g87/comment/cgkoxmm/
Easter egg discovery and Danny Gray confirmation:
https://twitter.com/andrewray/status/750132241683013632
https://twitter.com/Dan_Gray/status/750275036121096192
https://www.reddit.com/r/iosgaming/comments/227g87/comment/cgkoxmm/
Easter egg discovery and Danny Gray confirmation:
https://twitter.com/andrewray/status/750132241683013632
https://twitter.com/Dan_Gray/status/750275036121096192
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By clipping the camera through a wall in the 6th level "Munition Line", a hidden image of a creepy person can be found. This is an old Internet meme known as "Creepy Ugly Guy", a photoshopped image based on an example photo used in the API plug-in "Kai's Power Goo", that spliced together stock images of a man, a young girl, and a chimpanzee, and is believed to have been spread online as early as 1996 when the software originally came out.
War: Final Assault Easter egg:
https://www.youtube.com/watch?v=12_RO_paEJU
Kai's Power Goo - Creepy Ugly Guy original merged image:
https://www.youtube.com/watch?v=xt06OSIQ0PE?t=4m7s
Kai's Power Goo 1996 release:
https://www.computinghistory.org.uk/det/68752/Kai's%20Power%20Goo/
https://www.youtube.com/watch?v=12_RO_paEJU
Kai's Power Goo - Creepy Ugly Guy original merged image:
https://www.youtube.com/watch?v=xt06OSIQ0PE?t=4m7s
Kai's Power Goo 1996 release:
https://www.computinghistory.org.uk/det/68752/Kai's%20Power%20Goo/
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Just before Sonic transforms into Super Sonic near the end of the game, the surviving crowd in Station Square can be heard in the background chanting Sonic's name to encourage him. This crowd recording is actually comprised of over one thousand attendants in the audience for the official reveal of the game at the Tokyo International Forum on August 22, 1998. The chant was led by special guest Hiroshi Fujioka portraying Segata Sanshiro, the Japanese advertising mascot for the Sega Dreamcast's predecessor the Sega Saturn, and recorded by Sega to use in the game.
Sonic Adventure reveal at the Tokyo International Forum on August 22, 1998:
https://www.youtube.com/watch?v=LwzRMCNu6Rc?t=3357
Final chant recording at the event used in the game:
https://www.youtube.com/watch?v=LwzRMCNu6Rc?t=3643
Sonic Adventure - Super Sonic transformation chant:
https://www.youtube.com/watch?v=Nv9wXt81xDw?t=917
SonicRetro article:
https://sonicretro.org/2023/08/23/25-years-ago-sonic-adventure-was-revealed-to-the-world-a-look-back/
https://www.youtube.com/watch?v=LwzRMCNu6Rc?t=3357
Final chant recording at the event used in the game:
https://www.youtube.com/watch?v=LwzRMCNu6Rc?t=3643
Sonic Adventure - Super Sonic transformation chant:
https://www.youtube.com/watch?v=Nv9wXt81xDw?t=917
SonicRetro article:
https://sonicretro.org/2023/08/23/25-years-ago-sonic-adventure-was-revealed-to-the-world-a-look-back/
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All the characters that return in Mario Kart Wii reuse their Mario Kart: Double Dash!! models, except for the newcomers and Dry Bones, who debuted in Mario Kart DS.
Mario Kart: Double Dash!! character select and models:
https://www.youtube.com/watch?v=g7vCKSBHus4
https://www.models-resource.com/gamecube/mariokartdoubledash/
Mario Kart Wii character select and models:
https://www.youtube.com/watch?v=yfH5kluEphc
https://www.models-resource.com/wii/mariokartwii/
https://www.youtube.com/watch?v=g7vCKSBHus4
https://www.models-resource.com/gamecube/mariokartdoubledash/
Mario Kart Wii character select and models:
https://www.youtube.com/watch?v=yfH5kluEphc
https://www.models-resource.com/wii/mariokartwii/
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An intro dialogue with Reptile and Havik reveals the latter's real name in the New Era is Spoiler:"Dairou".
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Upon exiting a dungeon with the Skull Engine, it will play one of 3 random short tunes with it's whistle:• The Overworld Theme from The Legend of Zelda.
• The Overworld Theme from The Legend of Zelda: Spirit Tracks.
• The sound of a Phantom appearing.
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The background music for the "Merch Cemetery" stage has the filename "97 115 99 105 105 10", which when converted into ASCII spells "asciiLF". It is not known what this title means.
Freddy in Space 3: Chica in Space - 97 115 99 105 105 10 (Merch Cemetery):
https://www.youtube.com/watch?v=yKoPx2LpWCU
https://www.youtube.con/watch?v=6UaOGxUSiB4
ASCII Conversion Chart by Alfred State College:
https://web.alfredstate.edu/faculty/weimandn/miscellaneous/ascii/ascii_index.html
https://www.youtube.com/watch?v=yKoPx2LpWCU
https://www.youtube.con/watch?v=6UaOGxUSiB4
ASCII Conversion Chart by Alfred State College:
https://web.alfredstate.edu/faculty/weimandn/miscellaneous/ascii/ascii_index.html
subdirectory_arrow_right Nintendo Switch (Platform)
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Within the Nintendo Switch firmware prior to Version 4.0.0 (for Japanese, US and European systems only), there is a hidden NES emulator stub called "flog" that can be unlocked under very specific conditions. flog can only be unlocked on the Home Screen and when the console's internal clock is set to July 11th (if the date is changed in System Settings, but the console is connected to the internet and can see the actual date, this method will not work). The method to unlock it involves detaching the Joy-Cons from the console, holding them pointing forwards/downwards, then moving them to a vertical position and holding it for a few seconds. This gesture may take some time to hone due to it being a specific movement tracked by the Joy-Cons, but when it is matched, the system will check to see if flog is installed. When checked, an audio clip of a man saying "chokusetsu" ("直接"), the Japanese word for "direct", will play and the screen will cut to black and launch the 1984 NES title Golf. This emulator is unique in that it includes specific instructions in English and Japanese on how to play depending on how the Joy-Cons are held, and has a more stripped-down and simplistic appearance than the emulators that would be used for NES games on Nintendo Switch Online. Pressing the Home button while playing Golf will return you to the Home Screen without any visible software running there.
With Version 4.0.0, Nintendo removed all of the code required to launch flog and play Golf, but the company seemed unusually hesitant to even acknowledge its existence when asked by news outlets. One month before its removal, Nintendo of America president Reggie Fils-Amie released two statements regarding it when asked by Kotaku:
While this seems to allude that the secret emulator and Golf's inclusion were not authorized within Nintendo, this all but confirms that their purpose was to act as a tribute to Nintendo's late CEO Satoru Iwata. Iwata, who programmed Golf and previously hosted the company's Nintendo Direct showcase series, passed away on July 11th, 2015, with the method to unlock the emulator mimicking a gesture he used during Nintendo Directs. Japanese fans on social media referred to the Easter egg as an "omamori", an amulet purchased at Shinto shrines and Buddhist temples in Japan that if kept close are said to protect the bearer and bring good luck, speculating that Golf was included by Iwata as a secret charm to watch over every Nintendo Switch unit after his death.
With Version 4.0.0, Nintendo removed all of the code required to launch flog and play Golf, but the company seemed unusually hesitant to even acknowledge its existence when asked by news outlets. One month before its removal, Nintendo of America president Reggie Fils-Amie released two statements regarding it when asked by Kotaku:
"So, two comments on this. It was identified by folks playing around in the firmware. We've got nothing officially to announce for that content or what the plans are for that content. So that's that. Certainly anything that pays respect to my friend Mr. Iwata is something that is near and dear to me personally, but in terms of that execution and what it was meant to do or what the plans are, we've got nothing to announce."
"I'm struck whenever I go back to Kyoto and spend time in our headquarters and spend time in the offices where Mr. Iwata, myself and others would be meeting. It's always personally touching. And so, again, no comment on that particular execution."
"I'm struck whenever I go back to Kyoto and spend time in our headquarters and spend time in the offices where Mr. Iwata, myself and others would be meeting. It's always personally touching. And so, again, no comment on that particular execution."
While this seems to allude that the secret emulator and Golf's inclusion were not authorized within Nintendo, this all but confirms that their purpose was to act as a tribute to Nintendo's late CEO Satoru Iwata. Iwata, who programmed Golf and previously hosted the company's Nintendo Direct showcase series, passed away on July 11th, 2015, with the method to unlock the emulator mimicking a gesture he used during Nintendo Directs. Japanese fans on social media referred to the Easter egg as an "omamori", an amulet purchased at Shinto shrines and Buddhist temples in Japan that if kept close are said to protect the bearer and bring good luck, speculating that Golf was included by Iwata as a secret charm to watch over every Nintendo Switch unit after his death.
Video demonstrations:
https://www.youtube.com/watch?v=CGN6QXv7sfs
https://www.youtube.com/watch?v=DmkAvnnFICE
Polygon articles covering the discovery and removal of Golf:
https://www.polygon.com/2017/9/17/16323452/nintendo-switch-golf-emulator
https://www.polygon.com/nintendo-switch/2017/9/20/16338508/nintendo-switch-golf-iwata-theory
https://www.polygon.com/2017/12/27/16822340/nintendo-switch-golf-game-hidden-removed
Reggie Fils-Amie statements:
https://kotaku.com/nintendo-is-still-oddly-tight-lipped-about-the-switch-s-1820050815
The Cutting Room Floor article:
https://tcrf.net/Nintendo_Switch#Golf
Chokusetsu definition:
https://en.wiktionary.org/wiki/ちょくせつ#Japanese
https://www.youtube.com/watch?v=CGN6QXv7sfs
https://www.youtube.com/watch?v=DmkAvnnFICE
Polygon articles covering the discovery and removal of Golf:
https://www.polygon.com/2017/9/17/16323452/nintendo-switch-golf-emulator
https://www.polygon.com/nintendo-switch/2017/9/20/16338508/nintendo-switch-golf-iwata-theory
https://www.polygon.com/2017/12/27/16822340/nintendo-switch-golf-game-hidden-removed
Reggie Fils-Amie statements:
https://kotaku.com/nintendo-is-still-oddly-tight-lipped-about-the-switch-s-1820050815
The Cutting Room Floor article:
https://tcrf.net/Nintendo_Switch#Golf
Chokusetsu definition:
https://en.wiktionary.org/wiki/ちょくせつ#Japanese
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After killing the Swirl in mid-flight, a black vertical line appears across the spot where the Swirl was shot. This line is referred to under the Helpful Hints section in the game's manual as the "Ghost of Yars" and warns the player to stay off its "mean streak". If the Yar is in the lower third of the screen and the black spot on its back is aligned across the vertical line at the moment the explosion vanishes, the game ends and goes into the "Game Select" screen with "HSWWSH" in place of the player's score. These are the mirrored initials of the game's creator Howard Scott Warshaw.
Yars' Revenge HSWWSH Easter egg:
https://www.youtube.com/watch?v=_x_EXUfqQcs
Yars' Revenge manual (Page 6):
https://atariage.com/manual_page.php?SystemID=2600&SoftwareLabelID=603&ItemTypeID=¤tPage=8&maxPages=12
https://www.youtube.com/watch?v=_x_EXUfqQcs
Yars' Revenge manual (Page 6):
https://atariage.com/manual_page.php?SystemID=2600&SoftwareLabelID=603&ItemTypeID=¤tPage=8&maxPages=12
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In 2024, a hidden variation of the Konami Code was discovered in the game that allows you to unlock all characters and costumes from the start. To activate it, on the title screen, press C-Up four times/C-Down four times/C-Left/C-Left/C-Right/C-Right/C-Left/C-Left/C-Right/C-Right/L/R/Z.