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Watch trailer on Steam ↗FUNG
MELLOW PTY LTD · Published by MELLOW PTY LTD
4 user reviews — 100% positive (4 reviews) · 10 achievements
Last updated 27 Sept 2026
UNLEASH THE LIVING PIXELS - Nurture your mesmerizing slime mold and dive into the depths of a radiation-soaked realm, harnessing its energy. Whatever you do, do not stop feeding the FUNG!
£4.29
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Price history
Indie, Simulation, Early Access, Casual · 2023 · More under £5 games
Explore a radiation-filled world as you nurture and grow your mesmerizing slime mold in FUNG. Dive into early access to shape its energy and survival through careful feeding and exploration.
About this game
THE SKY IS THICK WITH ATOMIC FIRE
DWINDLING ELECTRICAL POWER REMAINS
OUR LAST HOPE LIES WITH THE FUNG
EVERY PIXEL IS ALIVE
The FUNG is a slime mold cellular automata. Each pixel supports the life of your mold as it grows and consumes. As humanity teeters on the edge of extinction, you must embrace your role as a daring pioneer. Cultivate your unique strain of slimy life, an organic marvel capable of converting toxic remnants into vital energy. Through careful nurturing and strategic decision-making, watch your slime mold grow, mutate, and adapt, unfurling mesmerizing tendrils of vibrant power.KEY FEATURES
- Every pixel simulated, life ebbs and flows on the grid
- Exquisite visual design, inspired by the old-school stylings of Lemmings (1991)
- Full level editor included
- Many more types of cellular automata included, including over 100 totalistic rules based on Conway's Game of Life
- A true indie classic
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS *: 64-bit Windows 7
- Processor: Intel Core i5-4690 / AMD FX 4350
- Memory: 4 GB RAM
- Graphics: NVIDIA GeForce GTX 760 / AMD Radeon R7 260
- Storage: 200 MB available space
Recommended
- Requires a 64-bit processor and operating system
Supported Languages
Latest news
Patch NotesOfficial
Monthly Update #29
Hey everyone, sorry for the lack of updates recently, haven't had anything too exciting to show off as I slowly tick away at the remainder of the game. We're going to be changing the cadence of these devlogs so we can put a bit more in them and increase our focus on building better things long term rather than crunching on little features to make for exciting changelogs each week. For this months update, we have a new Environment System built into the game! Currently it stores a grid of information about the localised environment, such as temperature. If you place a fire, it can heat up the area around it and turn water into steam! This more energetic form of water can be used to push level elements around, and will eventually cool down and condense back into water. You can see the environment grid by turning on Debug Mode, which will show hotter areas in red. {STEAM_CLAN_IMAGE}/44311688/b0a8980db86b4e49bfad9c44da4fd31be5492307.png FUNG - Changelog: New Flame level element New Environment System Water when heated up will turn into steam This steam carries heat away from the source and will heat up the area it travels to, allowing for multi-stage steam boilers/condensers to be built Once the steam has cooled down sufficiently (either through a water reservoir or by traveling through cooler air), it will condense back into waterRead full article on Community Announcements (Mellow)Patch NotesOfficial
Weekly Update #28
Greetings Wardens, If you're interested in my other projects (namely - Drift King), you'll already be aware that a combination of sickness and a short holiday have been keeping me away, and if ye didn't know that, now ye do! The latter half of Chapter 2 is coming down the pipes at a slowly accelerating pace, but some bugs have been identified! Let us know if you encounter any more! FUNG - Changelog: Fix crash when adding variable radius entities Fix ignored collisions between small and large entities Small entities are defined as "smaller than the hashmap grid size" and large vice versa Enjoy!Read full article on Community Announcements (Mellow)Patch NotesOfficial
Weekly Update #27
Hey all, We've finally finished our new collision resolution system, that utilises hashmaps to improve collision performance by over 10x! Now we have extra headroom for more complex physical simulations, and can have considerably more particles in a given level. A new fire/heat system is in progress to utilise the new system, keep an eye out in the future for that! FUNG - Changelog: Reimplemented collision resolution to use a spatial hashmap, similar to food searchingRead full article on Community Announcements (Mellow)Patch NotesOfficial
Weekly Update #26
We forgot to post the last weeks update! We've been deep in the optimisation mines so that we can expand the number of entities in a level beyond 500 without slowing down, so that we can add some basic thermodynamics! The goal is to add fire particles that will add a heat value to a grid, which will diffuse and spread over time. This, in tandem with a new wood wall type, will allow for the propagation of fire, and the heating of water, which will add more interesting physics based level mechanics (like boiling water into steam to push something)! Also, the tamagotchi mode is coming along too, as the FUNG is fed it becomes happier and slowly evolves into more calm behaviours, and a hungry FUNG becomes more ferocious. It'll stay persistent across sessions, unless you let it die and start again. To keep y'all happy while I continue to improve performance, have a look at 4,000 water particles running somewhat more smoothly than before! (Note the spatial grid is now smaller, since hash lookups are cheap and circle-circle collisions are... less so) The maximum limit before these changes was only 400 water particles at a time {STEAM_CLAN_IMAGE}/44311688/aa7a81a310cddd458b74b07f69b52db89a5f95d2.pngRead full article on Community Announcements (Mellow)Patch NotesOfficial
Weekly Update #25
Hey all, I've got that update for y'all to improve the first few levels of Chapter 2 after feedback and extra playtests. The bulk of this week however has been getting back into the captains coding chair and revving up to full development speed by contributing to some open source software (OSS) projects that have either helped the development of FUNG, or helped me keep my sanity. The biggest contributions this week have been to a Minecraft mod called HBM's Nuclear Tech Mod, which was a sorely needed distraction during the downtime between the frenetic pace of working on Chapter 2. If you play Minecraft at all, you'd be doing yourself a disservice to not check out this mod! https://github.com/HbmMods/Hbm-s-Nuclear-Tech-GIT {STEAM_CLAN_IMAGE}/44311688/d575bc331a4cf71460cab5766a9cfff2174dc066.png Also, if you haven't yet found and played the secret chapter in Chapter 2, you're missing out! FUNG - Changelog: Improvements and fixes made to levels 1, 2, 4, 5, and 13Read full article on Community Announcements (Mellow)






