Rat Overflow

Rat Overflow

Little Beast Lab · March 12, 2026 · Simulation, Creature Collector, Casual, Cute, Life Sim

Buy Rat Overflow from Steam at $5.99 — the cheapest of 1 store we compare.

PC
Very Positive86% · 691playing now
Best price 35 Lowest tracked
$5.99
⭐ lowest tracked
Steam Buy at Steam

Prices last checked

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Where to buy Rat Overflow — official stores

Steam
Steam
Standard Edition · Steam
$5.99
Buy

Rat Overflow price by region

Rat Overflow costs $3.99 in Georgia (USD), £4.99 in the United Kingdom, €5.89 in Europe (EUR), $5.99 in the United States, CA$7.79 in Canada, A$8.79 in Australia, NZ$8.99 in New Zealand, R$20.49 in Brazil and zł27.50 in Poland right now.

Cheapest Rat Overflow offer in each region, in local currency
RegionBest priceOfficial storeKey shopStores
Georgia (USD) $3.99 $3.99 — 1
United Kingdom £4.99 £4.99 — 1
Europe (EUR) €5.89 €5.89 — 1
United Statesyour region $5.99 $5.99 — 1
Canada CA$7.79 CA$7.79 — 1
Australia A$8.79 A$8.79 — 1
New Zealand NZ$8.99 NZ$8.99 — 1
Brazil R$20.49 R$20.49 — 1
Poland zł27.50 zł27.50 — 1

Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.

Screenshots

About Rat Overflow

Rat Overflow is a deceptively cute rat breeding simulator about genetics, glory, and having way too many rats.Breed fancy rats with a realistic color genetics system, show them off in competitions, and try to keep track of your ever-growing colony. Pick your pairings carefully — or don't — and watch the pups grow into champions, beloved pets, or delightful genetic surprises. With thousands of possible rat appearances driven by real inheritance mechanics.Start with humble stock, outcross from five quirky NPC breeders — each with their own color specialties and personalities — and build bloodlines that dominate the show circuit. But be warned: Rats breed fast. More pups are on the way. They're always on the way.SHOW THEM OFFEnter your best rats in shows against rival breeders, win championships, and level up to unlock new breeders with new color varieties and better genetics.REAL GENETICS, REAL CONSEQUENCESOver a dozen genetic loci control color, markings, health, and conformation. Siamese, Russian Blue, Dumbo ears, Rex coats — it's all in the genes. Breed strategically, or discover what happens when you don't.DRESS TO IMPRESSBuy outfits and accessories to style your rats for photo ops. Express yourself. They're your rats now.FEATURES
  • Realistic genetics with 14+ loci and thousands of color/pattern combinations
  • 5 NPC breeders to unlock, each with distinct specialties
  • Multi-tier show system with rival competitors
  • Health and conformation genetics — longevity and show success are inherited
  • Pastel retro aesthetic with pixel art and a Windows 98-inspired UI
  • A gentle but persistent sense that you have too many rats

About AI use in game development

The game's code is written with significant help from AI.Some text in game, as well as text on the store page is written with AI assistance.All graphics in the game are and always will be painted and edited by me without any use of generative AI. Same goes for all graphics on the store page and other marketing.

Rat Overflow — game info

Platforms
Windows
Player modes
Single-player
PC Game Pass
Not included

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Not recommended Sep 27, 2026
While it's a cute little game with an interesting concept, the vibe coding is veryy noticeable. It might be fine if the dev actually fixed anything but they seem to unwelcome negative-ish feedback. There also isn't any signs that the game is still being updated :,< I really want to see this game improve but as it is currently I can't recommend it
7 found this helpful
Not recommended Sep 27, 2026
I am so upset I was having a lot of fun with this game and then I found out that it uses AI :'c Wish I could get a refund but I played more than 2 hours. If you don't support AI be warned.
6 found this helpful
Not recommended Oct 9, 2026
I purchased this game while it was on sale and missed the fact that this game was made with the use of AI. While the art work is cute, i love the idea of a rattery game where you can breed and raise a bunch of rats and do things with them. I can see where the AI infiltrates and it's disappointing :// It has been a mini hyperfixation but like other reviewers said, - there is no way to pause and look over your rats and have to have the game active and "playing" in order to do anything. I'm someone who likes to look at every page and part of a game, family trees, genetics, etc. and take my time doing so to make a plan of what to do next. While you can put the game time on "epic" time still passes which can lead to rats aging, dying, doing x thing (even if it happens slowly). The only thing you can view while paused is the wiki. So if you wanted to organize your rats or figure out their stats and who is bested matched while who time still passes. - when using the "breeding" tab to breed rats it is frustratingly hard to see the 'male rats', 'female rats' and 'pedigree' sections of that page. I have to use larger text and instead of making it understandable it is like your writing in…
Recommended Oct 8, 2026
The Rattery game of my dreams! This game filled the VirtuRatz-shaped hole in my heart. It has accurate genetics & inheritance, adorable pixel art, and satisfying game loop of upbreeding my rats to higher show quality. I love the level of customization that the settings allow. There are a few things that would be nice to have added such as: - Agility Shows (+ stat breeding) - A memorial section for my favorite rats that have passed - Treats & Enrichment* (optional, leans more into pet sim territory)
Recommended Oct 6, 2026
it supa dupa fun. I love it.
Recommended Sep 26, 2026
such an adorable and fun game so far!! im a bit sad there aren't any recent updates, but i love it either way <3

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