Top similar games like Aquarium Days:

Chillquarium is a cozy and relaxing idle game. Buy fish and raise them in real time, then sell them to turn a profit! Customize your aquarium as you progress from a simple starter tank to your dream setup by filling your collection with rare exotic fish and ultra-rare color variants!

Relax and collect over 500 unique molluscs in this cozy idle game. Watch larvae grow into stunning adults in real-time, customize vibrant aquatic habitats across 9 themed packs, and discover rare species from garden snails to deep-sea cephalopods.

Buy fish as eggs, raise them in real time, and sell them for profit. Breed your favorites, build a tank that earns through decorations, and complete a collection of 250 species.

Buy sharks, raise them, and sell them for profit, or take control of any shark to hunt fish yourself. Collect 150+ real-world species from dwarf lanternsharks to great whites. Spot rare albinos.

Relax and collect hundreds of unique frogs and salamanders in this cozy idle game. Watch tadpoles undergo metamorphosis in real-time, customize lush terrariums, and discover rare species. Let your vivarium thrive in the background while you work or study. Start your collection today!

Fish will come, fish will go. Take photos, collect beans, decorate your seascape, then relax or do other things while your friends swim by in this calming side-idler.

Relax and collect hundreds of unique butterflies and moths in this cozy idle game. Watch caterpillars transform from larva to chrysalis to winged beauty, customize lush greenhouses, and discover rare species from monarchs to atlas moths.

Relax and collect over 500 unique mammals in this cozy idle game. Watch babies grow into magnificent adults in real-time, customize warm woodland habitats across 9 themed packs, and discover rare species from tiny shrews to great whales.

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!

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.

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.

Relax and collect hundreds of unique reptiles in this cozy idle game. Watch eggs hatch and babies grow in real-time, customize stunning terrariums, and discover rare species from geckos to chameleons.

Little Ghosties is a cozy idle desktop companion game where adorable ghosts live inside a terrarium on your desktop. Hatch, raise, and collect unique ghosts as they grow from eggs into fully grown adult ghosts.

Cozy Littlequarium is a relaxing aquarium simulator that sits at the bottom of your screen! Take care, breed them, collect and decorate!

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.

🦕 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?

Wing Haven is a relaxing idle game about building cozy bird sanctuaries. Collect rare and exotic feathered friends, give them plant shelter, and watch them grow in real-time! Progress from a basic enclosure to a beautiful nature preserve in old-growth forest, desert oasis, or wetland climates!

Easy Bubbles is a relaxing aquarium simulation filled with cute sea creatures. Manage your aquarium with click and idle mechanics, collect resources and have a pleasant experience in the colorful and peaceful underworld.

Run a cozy capsule shop at the bottom of your screen while you work or study. Attract adorable animal customers, collect charming capsule toys, create & decorate a relaxing, ambient world. This idle sim brings you small moments of joy with cute companions making your desktop a place you’d rather be.

An idle pet-collecting clicker game that keeps you company at the bottom of your screen. Click your egg to help it hatch. Grow your collection of pets to unlock upgrades and rarer eggs. Relax to chill Lofi music while you play at your own pace. Will you hatch the shiny variant of each pet?

An idle game about collecting moths.

Relax and collect over 500 unique dinosaurs in this cozy idle game. Watch hatchlings grow into towering giants in real-time, customize prehistoric habitats across 9 themed packs, and discover rare species from tiny raptors to mighty sauropods.

Fish Companions is a relaxing idle game that brings colorful life to your desktop. Adopt your own digital fish to keep you company. Raise your companions, unlock aquariums, explore new oceans filled with more fish, and collect them all! Hang out with your friends to enjoy even more companionship!

Create your own cozy aquarium, your own COZYQUARIUM! Collect fishes, display your favorites, make them 5 stars!

Joyquarium is a relaxing casual fish-raising game. Buy various cute fry and sell them at a high price after they grow up. With the money you earn, you can purchase aquatic plants, driftwood, scenery stone, etc. to decorate your tank (you can freely adjust the color, size, and position).

Virtual pets, WITHOUT the responsibility! Collect cute marimo moss balls and care for them on your schedule. They will always stay alive for you! Switch to Desktop Pet Mode and your Momos will keep you company on any digital space (including livestreams!) There’s a multitude of moss to amass!

A whisper-quiet aquarium that lives in the corner of your screen. Collect 200+ real-world fish across tropical, coldwater and reef tanks, breed them for rare strains, run a whole fishroom, and let the tank tick over while you work. No pressure, no fail state — just your fish, drifting.

Cozy Sanctuary is a relaxing pet simulation game where you care for adorable animals living at the bottom of your screen. Grow their food, and keep them happy and fed to attract even more furry friends! They'll stay out of your way while you work or study, but don't forget to give them attention!

"Lofi Aquarium" is a gamified focus tool designed to enhance concentration and relieve stress. As you work, a group of adorable baby fish will keep you company, all set to soothing lofi music. Over time, the fish grow and can be sold for profit. 

Fishing Tale is a relaxing fishing adventure game where you catch over 40 unique fish across diverse environments like oceans, lakes, and rivers. Customize your character, track your catches in a detailed journal, and enjoy the soothing sounds of nature.

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!

Cast n Chill is a relaxing fishing game where you explore serene lakes, rivers, and oceans. Catch rare fish, upgrade your gear and reel in legendary catches - all with your loyal companion by your side.

Cast into peaceful waters, guide your lure beneath the surface, and reel in fish of every size in FishyFox! Experiment with different bait and equipment, discover new species, chase trophy catches, and fill your personal aquarium in this cozy fishing adventure.

An incremental dino collection game where prehistoric stickers come to life. Hatch eggs, discover unique variants, build thriving habitats, and uncover powerful combinations to grow your fortune.

A chill clicker-idle stars hunting and constellations creation game that sits in the corner of your screen. Feel free to daydream while you are working or doing something else.

Make some lemonade and set sail in this cozy fishing incremental game. Catch weird fish across colorful locations, upgrade your gear, rebuild Starlight Cove back to its former glory, and defeat the evil shark that stole your grandfather's greatest treasure years ago.