Rat Overflow is an adorable rat breeding simulator about genetics, glory, and having way too many rats. Develop your show winner bloodlines and breed thousands of unique rat coats!
Live now
5
24h peak
6
All-time peak
6
SteamScope Score
39.0
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About
Store description and overview from Steam.
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.
Enter your best rats in shows against rival breeders, win championships, and level up to unlock new breeders with new color varieties and better genetics.
Over 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.
Buy outfits and accessories to style your rats for photo ops. Express yourself. They're your rats now.
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
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.
Player intelligence
Current activity, peaks, and momentum windows calculated from tracked player metrics.
7 day change
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90 day change
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365 day change
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Concurrent Steam players over time, aggregated per selected range from stored metrics.
Steam reviews
Community sentiment and review volume tracked from the Steam store.
Total reviews
44
Positive
40
Negative
4
Score
91%Positive
SteamScope Score
A composite score built from live player data, growth trends, retention, and longevity.
SteamScope Score
Higher scores indicate stronger recent momentum, sustained activity, and healthier long-term player retention.
Player growth windows
24 hour
+66.7%
7 day
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30 day
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Rat Overflow is tracked on SteamScope with live Steam concurrent player data, historical charts, and a SteamScope activity score of 39/100. Search for "Rat Overflow player count" or "Rat Overflow steam charts" to monitor how many people are playing right now and how activity compares with past peaks.
Rat Overflow is developed by Little Beast Lab, released 12 Mar 2026, a Casual, Simulation, Early Access title. Available on Windows.
Rat Overflow currently reports 5 concurrent Steam players with a 24-hour peak of 6 and an all-time peak of 6.
Player counts rose +66.7% over the past 24 hours, indicating strong upward momentum.
Among tracked Steam titles, Rat Overflow ranks #368 of 4,432 by momentum score.
Rat Overflow is showing positive growth signals. The SteamScope score of 39/100 reflects strong popularity (13) and growth (50) components.
Rat Overflow has 0 Steam achievements tracked on SteamScope.
FAQ
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Steam Features
Official Steam store feature flags from the Steam API.
Store Details
Support
[email protected]Regional ratings
Media
Gameplay trailer
Updates
System requirements
Minimum and recommended specs from the Steam store listing.
Minimum
Recommended
Languages
Store options
Rat Overflow - 5,89€
Tracked Steam store price snapshots over time.
Rat Overflow is currently €5.89 on Steam. The lowest tracked store price is €5.89 (recorded Jul 27, 2026).
Track store-wide deals on the historical low prices and recent price drops pages.
How this game's Steam Charts position has changed over time.
How Steam review score and volume have changed over time.
Rat Overflow has 91% Steam reviews across 44 user reviews. Steam labels this as "Positive".
Intelligence
Patch notes, discounts, and player spikes surfaced from stored Steam metrics.
Large concurrent player increase in stored metrics.
Large concurrent player increase in stored metrics.
Steam announcement or patch note.
Steam announcement or patch note.
Steam announcement or patch note.
Steam announcement or patch note.
Achievements
No Steam achievements available for this title.
