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Catto Boi
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This article contains spoilers! |
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The Catto Boi series is a collection of games created and uploaded to GameJolt around 2022. Built with GameMaker, the games feature chiptune music and pixel art to create a classic style similar to Super Mario Bros.
Plot
The Catto Boi story begins as a simple 2D platformer where the main cat collects biscuits for his friend Big Boi. Everything switches and the player is antagonized by an evil demon named Malice who takes over the game. Reaching outside the screen, Malice tortures both Catto Boi and the player by ruining the game world and forcing the player to change real files on their own computer just to survive. As the nightmare gets worse and the characters realize they are trapped in a computer, the final game, Requiem, reveals a plot twist: the whole series is a time loop that never ends. Malice is actually a broken, crazy version of Catto Boi himself, which forces everyone to suffer and die over and over in this computer unless the player solves deeply hidden puzzles to finally break the cycle.
History
Created by Zimbabwean game developer and artist mango-ki, the Catto Boi series began as a simple submission for popular YouTuber Luigikid's ".EXE Creepypasta Challenge". However, due to the game's unexpected popularity, mango-ki continued developing sequels to expand upon its lore. Realizing the original, poorly-coded joke games no longer aligned with the mango-ki's vision, the creator made the bold decision to entirely reboot the series after a 2023 wipe, rebuilding it from the ground up using the GameMaker engine. On June 18, 2025, mango-ki officially retired from game development, stating that their final project, Catto Boi Forever, was exactly the game they had always wanted to make, allowing them to conclude the series on a deeply satisfying high note. Following this release, they deleted their YouTube channel to step away from the public eye. Eventually, the complete horror saga was bundled into the Catto Boi Collection and released on Steam on September 9, 2025.
The Adventures of Catto Boi
The game opens with a cheerful title screen, upbeat music, and a vibrant 2D world where the player controls Catto Boi. The entire goal is straightforward: navigate various levels, jump on enemies, and collect "Cat Biscuits" for a character named Big Boi. However, as the player progresses, subtle glitches begin to infect the game: the music distorts, background colors flicker, and NPC dialogue shifts from helpful advice to cryptic, unsettling warnings. A mysterious, shadowy figure known as Malice briefly appears in the background before vanishing, hinting that the game world is being closely watched. The platforming challenges soon become erratic as platforms unexpectedly disappear and the collected Cat Biscuits morph into static or corrupted data.
Eventually, traditional gameplay breaks down entirely and fills down the screen with error messages. The gameplay pauses to display a mock-up of a computer desktop, forcing the player to interact with files in a simulated "game folder" to bypass obstacles; for example, they must delete a "fire.exe" file to extinguish a fire blocking Catto Boi’s path. In the final minutes, the cheerful music is replaced by an oppressive, low-frequency hum as Catto Boi confronts a distorted version of his world. Upon reaching the final goal, the screen is violently hijacked by Malice, who stares directly at the player before the game abruptly "crashes" to a screamer in a split second.
Journey to Catto Land
The game tasks the player with controlling Catto Boi during an 11 PM festival in the colorful "Catto Land". The player's objective is to complete simple platforming jumps and collect scattered Cat Biscuits for Big Boi before the midnight bus arrives, all while happily chatting with friendly NPC villagers like Cheese, Violet, and Bob. However, as Catto Boi leaves the festival and crosses a gate bridge, the atmosphere becomes suspiciously quiet. Forcing Catto Boi to turn back and re-enter the town shatters the cat's "fantasy" entirely; the town is completely destroyed, buildings have collapsed, and the upbeat music degrades into a loud, distorted nightmare. Horrifyingly, the previously friendly NPCs have been brutally murdered: Cheese is decapitated, and Violet is left hanging on a hook. Upon reaching the end of the ruined town, the game violently "crashes" to the desktop.
When the player relaunches the application, Malice, the overarching, self-aware demonic villain breaks the fourth wall to directly address the player, vowing to relentlessly torture both them and Catto Boi. The player is forced to navigate a pitch-black forest that grows increasingly darker to find a hidden code (970) in a book that unlocks a metal door. Eventually, Malice attacks Catto Boi in the form of a bloody mosquito, triggering another fake crash. The horror then bleeds into reality as the game begins messing with the player's actual computer, opening a Notepad file and taking control of the mouse cursor to forcefully drag it across the screen.
As the game repeatedly forces the player to reopen the app after constant crashes, Malice manipulates the code to make the player suffer through corrupted, glitchy versions of the first two games. While attempting to collect 20 pearls for a silent, eerie version of Big Boi, the player must endure sudden, screamers including a massive 3D head in a pitch-black void while the game window physically resizes and drags itself around their desktop.
A friendly entity named Minori briefly intervenes to help push back against Malice's control, guiding the player through a broken hub world with a black sky where they eventually discover Catto Boi's own dead body. Pushing the meta-narrative further, the game generates a real .txt file on the player's computer simply stating, "Keep going". Navigating a bizarre maze, the player must break brain-like boulders while evading a floating monster head, all while Malice berates them, claiming that Catto Boi is trapped in an endless loop of suffering and cannot be saved. After encountering a lifeless clone of himself at the end of the void, the player can achieve the game's "Good Ending". The screen cuts to white, and Catto Boi suddenly wakes up in his bed. He steps outside into a bright, restored Catto Town, casually brushing off the horrific ordeal to Big Boi as just a "few nightmares" before cheerfully mentioning how excited he is to hang out with his friends.
The Quest for the Frozen Tuna
The sequel follows Catto Boi as he wakes up in the Hub Area and is convinced by Big Boi to retrieve an ancient, wish-granting "Tuna Relic" hidden in some underground ruins. The player navigates a series of colorful, relatively normal levels such as Sakura Hills, Sunset Stride, and Jungle Jam before ascending the cobweb-filled, golden Ancient Shrine. However, upon reaching the final room, Catto Boi realizes he has been tricked into a dead end and suffers a visible breakdown just before the ceiling collapses, brutally crushing him to death with falling spikes and forcing a crash again to the desktop.
When the player relaunches the game, Catto Boi wakes up in his bed experiencing a severe paranoia, actively remembering his gruesome death from the previous playthrough. Terrified, he desperately tries to interrupt Big Boi's exact repeated dialogue to change his fate, but the game violently crashes once again. Upon the next reboot, the facade is entirely gone; Malice fully asserts control, dropping the player into dark, aimless, heavily corrupted levels accompanied by distorted music. Blurring the line between software and reality, the game throws fake "genuine error" pop-up messages onto the player's actual computer screen to hinder their progress.
This part continued with an intense, intentionally unfair chase sequence where Malice manifests as a giant, terrifying hand hunting Catto Boi. The player must dodge spikes, bottomless pits, and damaging vines while the game employs massive fourth-wall breaks, violently shaking and throwing the application window around the computer desktop to break the player's focus. If caught, the game instantly hard-closes, forcing the player to restart the chase. Upon successfully escaping the hand, a furious Malice throws a tantrum, displaying the text: "NO. NO. THIS WASN'T SUPPOSED TO HAPPEN". Catto Boi survives the ordeal and becomes fully self-aware of the world he is trapped in.
Requiem
The game features an upbeat, retro platforming where Catto Boi collects diamond fragments to farm extra lives. However, upon collecting all the diamonds, the game prompts the player to press Ctrl + Alt + Del for a special reward, which instantly shatters the happy-go-lucky world. Malice welcomes the player back with the message: "Hello, ready to play again?". Catto Boi is violently impaled, and the game begins aggressively interacting with the player's actual PC, generating new text documents in the local files that the player must read and manipulate to proceed.
The perspective then shifts to a character named Minori trapped in a pitch-black, isometric 3D maze. Here, it reveals that Violet a seemingly innocent NPC from earlier games is actually a malicious entity known as "Torment". To push past the entity's roadblocks, the player must constantly open and close the game application while dropping newly generated text files (such as an auto_executable file) into the game's actual code folder.
The meta-horror reaches its absolute peak when the game traps the player on a frozen, zoomed-in screen accompanied by a loud, accelerating heartbeat. The player is forced to scour their computer's hard drive to find a hidden text document often buried in folders like OneDrive which reveals a massive plot point: Big Boi’s code was exploited from the very beginning. Because the game's architecture was designed to let omnipresent entities use him as a vessel for full control, Big Boi was doomed from the start.
Following this, the player is thrown into a desperate, bullet-hell boss fight playing as Floaty Boi dodging projectiles and shooting back. Despite successfully surviving the phases, the game throws an unfair curveball, displaying the text "Too slow" and triggering a bleak, unpreventable series of tragedies: Big Boi is permanently killed off, Violet is fully consumed by her identity as Torment, and Minori, realizing their efforts were pointless, ends her own life.
The plot twist of the series is finally revealed. The entire franchise is an inescapable time loop. The characters are trapped in a computer, forced to suffer, die, and repeat the horrific events of all previous Catto Boi games for eternity. As the credits roll, footage of the older games plays to signify the loop resetting, leaving the player to realize they achieved the "Bad Ending" and must solve a deeper, hidden meta-puzzle to break the cycle and uncover the true secret ending.
Links
Download links
NOTE: The following games contain multiple screamers!
- Steam collection, all games included.: store.steampowered.com/app/3955550/Catto_Boi_Collection/
Showcase videos
NOTE: The following videos contain multiple screamers!
- Adventures of Catto Boi: youtube.com/watch?v=r6Vsvm9cU9s
- Catto Boi: Tedious Pearl Hunt: youtube.com/watch?v=FVrV883CosM
- Catto Boi: Journey to Catto Land Walkthrough youtube.com/watch?v=4TC9wbGYoyA
- The Quest for the Frozen Tuna Walkthrough: youtube.com/watch?v=ROWNFqpz4rU
- Catto Boi: Requiem: youtube.com/watch?v=eP1BIwhdwdM
Miscellaneous
- Catto Boi Wiki: catto-boi.fandom.com/wiki/Catto_Boi
- TV Tropes ver.: tvtropes.org/pmwiki/pmwiki.php/VideoGame/CattoBoi
- Documentary, courtesy of ToadBup: youtube.com/watch?v=MfCx9A3zQh4
See Also