Top similar games like Zen Aquarium:

A Good Day Fishing is a gamified focus tool where you catch fish while completing real-life tasks. Reel in and record new species, decorate your favorite cozy fishing spot, and customize your soundscape to create a custom vibe to help you relax and boost concentration.

"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. 

Machorium - Muscle Aquarium Simulator - is a relaxing idle and sandbox game where you can unwind and have fun. Use points generated by cute little decorative muscle men to unlock various items and create your ideal muscle aquarium, Machorium.

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.

Feather Land is an idle game that blends productivity tools with a study/work companion. Enjoy calming music, hatch eggs, collect cute birds, and watch a quiet space into a landscape full of life, bringing peace and focus to your study or work sessions.

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!

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

Spirit City: Lofi Sessions is a gamified focus tool, set to a soothing lofi soundtrack. Discover and collect Spirits, customize your cozy virtual space, and facilitate your real-life tasks with a collection of handy features designed to improve concentration and ease stress.

Build and customize your own arcane aquarium in this cozy collection/idler game. Use your magic to summon juvenile cute creepy fish. Tend to them and watch them grow. Make discoveries, expand your collection, decorate your tanks with art and plants.

This is a simple idle game with productivity tools, relaxing minigames, and decor options, all centered around the serene theme of an onsen (Japanese hot spring).

Turn your computer into a relaxing and cozy safe place. Activate global weather effects such as rain, snow and falling leaves that play no matter what you are doing. Customize them to fit your preferences and your current mood! Light a comforting camp fire, collect friendly companions and more!

A cozy idle aquarium game: collect, breed, and sell fish, shape your tank with decorations, grow your economy, and relax while your fish earn for you.

Catch, Collect and Care for Pondlings with unique colour, pattern, size and nature combinations! Personalise your tank with animated backgrounds, floorings and objects. Unlock Pond-Passes in-game to gain access to exciting fishing locations, each with special new Pondling types to collect!

A cozy idle fishing game where you play as an adorable alligator angler. Designed to run in the corner of your screen, it's the perfect companion for work or study—featuring rich animations that make every moment feel like watching a charming short film.

A cozy idle aquarium that lives on top of your screen. Watch fish swim, grow, and interact while you work or relax. Desktank turns your desktop into a peaceful underwater world — float it in the corner or let it take over the whole screen. Just sit back and enjoy the calm.

AquaCorner is a relaxing 3D idle simulation that brings a charming aquarium to your desktop corner! Collect cute fish, nurture them, and decorate their habitat with colorful items. Enjoy this cozy, atmospheric experience and build your dream underwater ecosystem.

Relax in a calm idle aquarium for quiet moments. Buy and feed fish that grow in real time. Sell fish to buy more fry and discover rarer species. Build your oasis: unlock and place decorations, and enjoy fish interacting with them. Your world keeps earning even while you’re away.

Idle aquarium sim you can keep anywhere on your screen while you do other things, or play in a full screen window you can dock or resize if you wish! Buy endless upgrades, apply trait modifiers, and complete your collection of rare, epic and legendary fish! Don't forget to wishlist!

Draw your own fish and unlock new ways to decorate your aquarium. If you feed them well, they will gain a metallic shimmer as they age. Will you be the one to raise a golden fish in this relaxing sandbox experience?

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.

A Twitch powered interactive cozy fishing idle game. Add as an overlay for your stream and let your viewers fish with commands, points, bits or subs. Reel in the lurkers and boost viewer engagement passively with a fun interactive game that runs itself while you focus on your content.

Dive into Pelagos: Snap, Learn & Explore Marine Ecosystems!

Cast n Chill is a cozy idle (and active) 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.

Cozy Island Idle is a chill fishing idle game where you catch all sort of fantasy fishes to showcase them in an Aquarium to sell them to turn a profit and customize your aquarium and island.

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!

Let's face it, we all were once kids. There was a time when we wanted pets, and there was a moment when we wanted to keep a pet fish. Some of us got what they wanted; some didn't. Some cried, some forgot. Aquario is the game where you can live through this traumatic experience again, or anew.

Desktop Fishing is a cozy idle game that sits in the corner of your screen. Go about your usual desk work (or don't) while your frog buddy catches fish, discovers new outfits, and unlocks fishing spots.

Watch a tiny diver explore the ocean in the corner of your screen. Collect sea creatures, upgrade equipment, and unlock new diving spots.

We Love Fish Tanks is a cozy aquarium builder. Kick back & relax, buy, breed, & sell fish (or fish-like things), and decorate your tank exactly how you'd like!

Save the coral reef city in this cute tiny adventure game! Meet the colourful residents of this underwater city, explore the streets, befriend different species of fish and help them restore the corals to their former glory!

Create and customize your very own Dragon Sanctuary! Reclaim a world lost to ancient corruption and restore it to life. Build, decorate, and upgrade your sanctuary as you cleanse the land and bring the last of the dragons home to hatch.

Planetiny is a relaxing idle game with Desktop Mode for work or study. Discover planets, collect Tinies, feed them and upgrade planets to boost productivity, and optimize by replacing the less productive ones. Enjoy chill or lofi music and customizable ambient sound layers.

Take care of your slime pet in a cozy world! Play minigames, level up, and have up to 3 fluffy companions while you work or study. Relax, and enjoy adorable company—you'll never feel lonely again!

Discover a myriad of exotic species in this relaxing aquarium manager. Balance your resources and care for your fish to build the ultimate habitat.

Need a cozy companion while you plan your day or just zone out? Comfy Girl lets you unlock and collect cute pets, decorate your virtual space, and relax with relaxing music. Focus while you work or study, and enjoy time with Grandma and Zoe.

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).