Rat Overflow — Is It Worth Playing?
Rat Overflow is an adorable rat breeding simulator about genetics, glory, and having way too many rats.
Official trailer & screenshots via Steam
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 OFF 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. REAL GENETICS, REAL CONSEQUENCES 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. DRESS TO IMPRESS Buy 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.
Description via Steam.
Key Stats
Should You Play 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 sp…
Rat Overflow is single-player on Steam and runs on Windows. It's on our trending radar right now.
Opens the official Steam store page.
System Requirements & Platforms
View PC requirements & supported platforms
Platforms: Windows
Minimum
OS: Windows 10 · Processor: Any dual-core processor · Memory: 4 GB RAM · Graphics: Integrated graphics · Storage: 500 MB available space
Recommended
OS: Windows 10 · Processor: Any dual-core processor · Memory: 8 GB RAM · Graphics: Integrated graphics · Storage: 500 MB available space
Rat Overflow — Frequently Asked Questions
- When does Rat Overflow release?
- Rat Overflow released on Mar 12, 2026 and is available now on Steam.
- What kind of game is Rat Overflow?
- Rat Overflow is a Sim game. Rat Overflow is an adorable rat breeding simulator about genetics, glory, and having way too many rats.
- Is Rat Overflow multiplayer or co-op?
- No — Rat Overflow is listed as single-player only on Steam.
- Is Rat Overflow on Steam Deck or consoles?
- Rat Overflow runs on Windows via Steam; Steam Deck compatibility has not been confirmed. No console release has been confirmed.
- How much does Rat Overflow cost?
- Rat Overflow is priced at $5.99 on Steam.
- What are Rat Overflow's system requirements?
- The developer has not published detailed system requirements yet.
- Is Rat Overflow worth playing in 2026?
- Plenty of players think so — Rat Overflow peaked at 3 concurrent players on Steam in the last 24 hours as of 2026.
- Who made Rat Overflow?
- Rat Overflow is developed by Little Beast Lab.
- What games is Rat Overflow similar to?
- Rat Overflow sits alongside Sim games such as Tiny Glade, THE LIFT: Supernatural Handyman Simulator, Fields of Mistria.
- What platforms is Rat Overflow on?
- Rat Overflow is available on Windows.
Data & media via Steam · updated 2026-07-17 · all trending games →