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Watch trailer on Steam ↗GutBuster
RoyalJellySoftware · Published by RoyalJellySoftware
Content notice: Crude language and humor, including swearing and jokes referring to sex and sexuality (No actual depictions of sex, or blatant descriptions of sex or sexuality within dialogue). References to, and depictions of, erotic paraphilia without any sex or nudity, which some may still find inappropriate.
Positive — 100% positive (41 reviews) · 39 achievements
Last updated 4 Oct 2026
Digest the ravenous Rebbecca's meals in this arcade style run and gun erotic comedy game. Dodge and blast the chewed food, collect powerups, and spend lipids at the upgrade shop to survive the challenge and prevent indigestion! For mature players.
£4.29
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Price history
Action, Indie · 2025 · More under £5 games
Navigate Rebecca's meals, dodging and blasting chewed food in GutBuster. Upgrade your skills at the shop to survive this unique indie action experience from RoyalJellySoftware.
About this game
Delicious! Nutritious! MALICIOUS!
Rebbecca Valentine is a raccoon with quite the appetite. This game takes place in the corrupt, poorly run company that is her stomach. You play as a lowly worker cell, and perform the dangerous duty of breaking up the food Rebbecca eats with your acid blaster. Keep up with Rebbecca's eating habits, as this is supposed to be an iron stomach, and your Boss expects results--and she's not gonna be happy if you fail and make Rebbecca sick!
Hunger Pangs!! Bust a Gut, Bros!
GutBuster is a classic arcade-style shooter, with hand-drawn animations and satirical comedy about corporate greed, the digestive system, and erotic gluttony. Controls are simple: just run, while the gun shoots upwards automatically! Run and use your dodge-roll ability to avoid the food targets as you blast, so you don't get crushed! This is a challenging, yet casual game where you can continue as many times as you want. Accessibility options are available if you want to make it easier, or just want to see the story.
It's 'Zyme Time!
Bust open Enzymes to acquire one of five different Power-Ups to help you fight harder and get bonuses. Bust'em up quickly with the Bile Blaster! Use Tri-Glycerides to spread out your shot! Use the power of thirst to slow down targets with Osmosis! Protect yourself and counterattack with the spiny Cell Wall! Or make yourself rich with the outpouring of lipids from a Hormone Spike!
Fatten Your Wallet, Too!
Collect lipids, then spend them at the shop to upgrade your blaster, make power-ups last longer, increase the appearance of lipids and enzymes, or even divide yourself for extra lives, and increase your odds of survival in this escalating challenge through 40 fattening levels, as the difficulty increases along with Rebbecca's weight!
Help Rebbecca to overcome any eating challenge, and don't give her indigestion!
WARNING: This game is meant for a mature audience. While there is no nudity or graphic depictions of sex in this game, it has content regarding fat furry gluttony, weight gain, sensual overeating, and references to other paraphilia, which may be discomforting or disturbing to some viewers, as well as language and subject matter that is not appropriate for young audiences.
Classic arcade run-and-gun gameplay!
Five different power-ups to help win the fight!
Robust upgrade system to increase your powers!
Hand-drawn art and animation made by RoyalJellySandwich!
Hilarious skits and cutscenes, all written by RoyalJellySandwich!
An original soundtrack with a variety of different music styles, composed by (you guessed it) RoyalJellySandwich!
An overstuffed, 8-Chapter story spanning 40 levels!
Accessibility options, including invincibility and shop discounts, along with full customization, so you can play the game the way you want to!
System Requirements
Will my PC run this? →Minimum
- OS *: Windows 7 or later (32-bit or 64-bit)
- Processor: Intel Core i3
- Memory: 4 GB RAM
- Graphics: NVIDIA GeForce 1050
- Storage: 500 MB available space
Supported Languages
Latest news
AnnouncementsOfficial
Summer Sale! (20% off!)
GutBuster is 20% off for the Steam Summer sale, now until July 9th!Read full article on Community Announcements (royaljellysandwich)Community & EventsOfficial
Bullet Fest Sale (20% off!)
GUTBUSTER'S FIRST SALE! $1 OFF! YEAH, THAT'S ONE WHOLE DOLLAR! WOW!GutBuster is getting a $1 discount* (That's 20% off!) for a week (June 8, 2026 - June 15, 2026) as part of the Steam Bullet Fest! Get it cheap and have a big, fat blast!*GutBuster will be 20% off on both Steam and itch.io from June 8, 2026 to June 15, 2026.Read full article on Community Announcements (royaljellysandwich)AnnouncementsOfficial
GUTBUSTER: 1-Year Anniversary!
GUTBUSTER is one year old! On January 27th, 2025 the first game from RoyalJellySoftware launched right here on Steam! I'm still in progress for adding new content for 2026. To everyone who bought and played GutBuster, thank you for your support! Stay tuned for new announcements!Read full article on Community Announcements (royaljellysandwich)AnnouncementsOfficial
BUTTGUSTER! (April Fools)
{STEAM_CLAN_IMAGE}/45434671/6e8dd4241c04489994405c0768c3a6185361d1e2.png I'm so excited I can't hold it in any more! BIG, LOUD, HONKING announcement for my next game! It's not quite the usual little cloud I'm in, but I smell a great follow-up! Plus, a scratch and sniff physical edition, with free clothespin!Read full article on Community Announcements (royaljellysandwich)Patch NotesOfficial
Version 1.1 Live
After weeks of messing with code and learning optimization I've got GutBuster v1.1 ready. Here's what's added: Optimized performance to run better on lower-powered devices. Bugs and memory leaks should be taken care of. Game should run faster. Quality of Life Updates Option added to toggle visible hitboxes for the player, targets and bullets to assist with clarity. 3D food model animations have been tweaked and rotated to more accurately display the width of the target. Stage backgrounds have been altered to have deeper colors for better contrast. Cutscene Replay Button added to the between-level menu. Now you can rewatch the scene if you missed it! Tips On/Off Switch added to the menu, giving you the ability to turn the random tip scenes on and off. Updates to Theater Mode All of the sections in the Theater Mode have been updated to be used with buttons, and can be operated via keyboard, mouse, or controller. No more awkward cycling through the galleries one at a time! Gallery now has a thumbnail list for easier browsing. New art added to Art Gallery, including art that must be unlocked via completing achievements. Music Test now has a selection list. Cutscene Player has three selection lists for Winning scenes, Losing scenes, and Tip Scenes. You can stop a playing scene by selecting/opening one of the lists. Effects Animations and 3D Model galleries have button lists. I'm a little nervous posting this update because, while there doesn't seem to be a lot changed, I altered a lot of things. I'm just hoping this doesn't break anyone's saves or anything. I've been reading your all the posts from those of you dealing with frequent crashes, seemingly from whenever the player takes a hit. (I just hope I don't have to roll it back to v1.0.3 or anything). If you come across any new issues, or if some previous issues are better with this new version, leaving feedback for it will be greatly appreciated! -RJSRead full article on Community Announcements (royaljellysandwich)
