Top similar games like Rat Overflow:

Enjoy watching cute hand animated dinosaurs inspired by 90's Tamagotchi live directly on your desktop. Manage your environment, resources to raise and evolve your dinosaurs during their entire life. But don't forget to show them love! Dinosaurs need love!

Creature Evolution is a simple game about merging little creatures and seeing what they turn into. You start with a few small critters, and by combining them, they slowly change into new and sometimes unexpected forms. The more you merge, the stranger and bigger they grow.

Decorate your own aquariums and care for a variety of fish in Fishlets, a cozy fish-collecting sim! Feed, breed, sell, and collect fish and aquatic critters in the virtual tanks mode. Drop into Adventure mode and progress through 7 unique levels, unlocking even more fish while fending off threats!

Explore real digital life in The Bibites! Play god by guiding your bibites on their evolutionary journey or engineer your own. Analyze their Neural Network brains and genetic information as they adapt to their environments. Save your favorites and test their strength in Challenge Mode!

Grow, feed and care for your colony of adorable isopods in this realistic semi-idle simulator. Watch your isopods multiply and split or sell your colony if they become too numerous. Created by the Kunstaat community, 100% of our proceeds support charity!

Run your own cozy fish shop, collect unique breeds, care for your tanks, and decorate your home. Breed rare fish, manage customers, and grow your store. Build, customize, and create the aquarium life you dream of.

Rare Rabbits is an adorable, turn-based simulation game where you can already breed more than 6,000,000 unique rabbits and manage your very own rabbit farm. Each rabbit’s appearance and traits are determined by scientifically accurate genetics and inheritance principles, down to the smallest allele!

Paw by paw, pixel by pixel grow alongside your hand-drawn desktop companions. Play at your own pace, free from timer stress, and make a real-world impact with every step you take.

🦕 Dino Park is a cozy idle game about collecting dinosaurs! 🦖 Watch your dinosaurs level up in real time, earning more money for your park. Create the perfect environment for your dinosaurs to increase the chance of discovering super rare variants! Can you collect them all?

Ribbit Ranch is a cozy idle simulation game for casual play. Collect over 200 million types of frogs, raise them in real time, and sell them for profit. Customize habitats with decorations, rare species, and ultra-rare special frogs.

Build a living pond where every fish has a unique genetic code. Breed for rare traits, balance oxygen and hunger, unlock new species, and watch your ecosystem compose its own soundtrack in real time. Part sim, part idle game, part science experiment gone beautifully wrong.

Catch 200+ real life bugs in this peaceful creature collector. You’ve bought the local insectarium (bug zoo) in the cozy town of Buggburg, so start swinging your net to build your dream bug collection and create the best insectarium Buggburg has ever seen.

Discover and collect cute Dino Girls, organize their activities, and expand your resort while going about your daily stuff.

Idlequarium is a casual simulation game where you raise adorable little fish to earn coins, purchase decorations, and build a fully customized aquarium.The game sits anywhere on your desktop, letting you interact with your live aquarium during work or study breaks.

Grow, feed and care for your shrimp pals. Watch your shrimp multiply and sell your colony when they become too numerous.

A relaxing idle fishing game that waits for you at the bottom of your screen. CATCH fish, BUY upgrades, COMPLETE your collection, and DISPLAY them in your aquarium.

Wing It is a relaxing simulation game where you build and manage a bird sanctuary. Discover, care for, and unlock diverse bird species, customize your haven with unique decor, and explore new locations to expand your sanctuary. Create a paradise for your feathered friends!

Little Aviary is a relaxing idle bird collector that sits at the bottom of your screen! Hatch unique birds, sell them, decorate, then watch them fly around your screen and perch on top of your other windows!

A relaxing, idle boba-shop simulator that can accompany you as you work on other things. Sell boba tea, unlock new drinks, and customize and care for a boba pet that lives in the corner of your screen!

Dive into Purrounding and customize your very own cat! Watch as your adorable feline strolls across your taskbar, and create the perfect workspace with a variety of furniture pieces. Boost your productivity with a Pomodoro timer and chill out to some lo-fi tunes while you work!

A desktop hunting game. Catch tiny creatures that appear on your desktop, bring them to your peaceful garden 🏝️ Take care of them as they grow, evolve, and fill your space with quiet cozy life.

Manage a care center for adorable monsters in Monster Care Simulator! Treat clients' creatures, hatch eggs, raise your own companions, and keep them happy with fun activities. Hire staff, expand your facilities, and customize your space to build the ultimate monster sanctuary!

Have you ever wanted a hyper-realistic industrial chicken farming simulator? Us neither. Design your own farm from the ground up and watch it whimsically expand as you work to reconstruct long forgotten legendary chicken genomes. With so many paths to take, what will YOU choose to create first?

A cozy management sim where the jazz is smooth, the cocktails are cooler than the evening breeze, and the lake reflects your perfect escape.

Meet your new little desk buddies! They’ll snooze, scratch, and scamper around while you work or study (don’t worry, they’ve been trained not to invade your workspace). If you’re good at animal management, they will occupy the bottom of your screen with different kinds and colors!

"My Aquarium" runs at the bottom of the screen while you are doing other things, making it an idle aquarium simulator you can enjoy comfortably.

Learn to Make Millions in this Cozy Merchant Sim. Build a business and beat the competition to become the biggest merchant in the world by learning smart financial habits, behaviors and traits. Craft pies & jams from tons of different berries. Have fun running your shop & helping your community!

A chill idle-fishing desktop toy in the corner of your screen. Buy upgrades, catch rare fish, and customize your avatar at your own pace!

A pachinko-style idle game that stays on the side of your screen while you are doing other things. Unlock and collect more marble creatures to earn coins, continually upgrade your village and pachinko tables to accelerate growth. Build the beloved Village!

Misty's Idle Fishing is a relaxing idle fishing game that sits on your desktop! Help Misty upgrade her equipment, customise her boat, and discover new islands, so she can catch and research all sorts of fish while you are busy with other things!

Kojimachi is a widget style pet game where you can feed and care for your pet on the island you decorate.

Turn your balcony into your very own birdwatching spot, and await the arrival of new avian friends! Enjoy a cozy idle game — place a tiny postcard on the corner of your screen, keeping you company with pleasant scenes and visiting birds. Oh, and don't forget your camera!

Grow Wild is a cosy nature game where you grow real-life plants and trees, create thriving ecosystems, discover hundreds of creatures, and help rewild the world!

Grow, feed and care for your colony of mighty ants in a realistic semi-idle simulation of ant keeping. Created in collaboration with ant keeping enthusiasts, Ant Keeping Simulator will be an accurate experience to ant keepers.

Aviarium is a relaxing sky sanctuary simulation filled with cute birds. Manage your floating aviary with click and idle mechanics, collect resources, and enjoy a pleasant experience in a colorful and peaceful world above the clouds.

Raise your own virtual pet right on your desktop. Choose your favorite, take care of your companion, play together, train for battle, and help them evolve! They will always be there, keeping you company while you work, play, or browse.