Games Like My Koi

A koi breeding game.

Why similar: Nature 30.8%, Simulation 22.5%, Relaxing 17%, Casual 11.8%, Atmospheric 10.7%

Why You'll Like It: Focuses on the specific joy of breeding and observing koi in a relaxing, low-pressure environment.

Immerse yourself in the ultimate relaxing aquarium experience. Watch fish glide gracefully through a serene, ever-changing tank—no setup, no stress, just pure tranquility. Enjoy soothing visuals and ambient ASMR sounds as your aquarium comes to life effortlessly. Your peaceful escape awaits!

Why similar: Underwater 40.2% ★, Nature 16.5%, Relaxing 12%, Simulation 8.1%, Immersive Sim 4.7%

Why You'll Like It: Provides a highly atmospheric and visually pleasing aquarium experience designed specifically for relaxation.

Create stunning virtual aquariums on your PC! Our advanced 3D engine brings your fish tank to life with breathtaking realism, featuring lifelike fish, plants, decorations, and more. Transform your monitor into a vibrant, living aquarium. Virtual aquascaping has never been easier!

Why similar: Underwater 40.2% ★, Nature 17.3%, Relaxing 12%, Life Sim 11.2%, Realistic 9.1%

Why You'll Like It: Offers a realistic and immersive aquarium simulation that mirrors the meditative quality of watching fish.

Equilinox is a relaxing nature simulation game in which you can create and nurture your own ecosystems. Shape the world to your liking, cultivate and raise hundreds of different species, and evolve your wildlife to unlock more exotic plants and animals.

Why similar: Nature 24.4%, Relaxing 23.8%, Simulation 18.2%, Beautiful 17.2% ★, Casual 6.9%

Why You'll Like It: A relaxing nature simulation where you manage a thriving ecosystem, sharing the peaceful vibe of My Koi.

Biotope will be the most detailed and realistic aquarium simulator on the market. Biotope makes it possible to create complex aquarist ecosystems and simulate realistic life cycles of plants and fish.

Why similar: Underwater 28.8% ★, Life Sim 14.1%, Immersive Sim 11.3%, Relaxing 11%, Realistic 10.6%

Why You'll Like It: A detailed and realistic aquarium simulator that emphasizes the biological needs of fish in a calm setting.

Nurture a small pot of succulents that grow in real time. Viridi is a safe haven, a place you can return to for a moment of peace and quiet whenever you need it.

Why similar: Relaxing 43.7%, Simulation 17.3%, Nature 16.5%, Atmospheric 10.2%, Casual 8.3%

Why You'll Like It: A meditative, slow-paced plant-care simulator that captures the same 'check-in and relax' spirit as My Koi.

Aquarium Designer gives you an opportunity to create the aquarium of your dreams! Become a professional whose job is to design it, build it, and fill it with the various underwater wildlife! All types, all sizes - your creativity is your only limit!

Why similar: Underwater 48.2% ★, Relaxing 15%, Life Sim 12.5%, Realistic 10.2%, Simulation 6.6%

Why You'll Like It: Allows for the creative and relaxing design of aquariums without the stress of complex management.

Existential Nature Simulation

Why similar: Relaxing 29.2%, Beautiful 24.5% ★, Simulation 20.1%, Nature 9.5%, Casual 8.5%

Why You'll Like It: A purely passive, atmospheric experience that encourages quiet observation of a natural environment.

From the art director of Journey®, ABZÛ is a beautiful underwater adventure that evokes the dream of diving. Immerse yourself in a vibrant hidden world bursting with color and life as you descend into the heart of the ocean. But beware as you swim deeper as dangers lurk in the depths.

Why similar: Underwater 42.9% ★, Beautiful 25.4% ★, Relaxing 17.9%, Atmospheric 8.3%, Casual 2.2%

Why You'll Like It: The quintessential underwater exploration game, offering unparalleled beauty and a deeply relaxing, meditative journey.

Koral, a love letter to the ocean. Dive into the beautiful underwater world as a sea current. Solve puzzles to bring back to life coral reefs and spread the beauty of the oceans in different sea ecosystems.

Why similar: Beautiful 40.2% ★, Underwater 35% ★, Relaxing 10.3%, Simulation 5.3%, Atmospheric 5.2%

Why You'll Like It: A beautiful, underwater-themed game that prioritizes exploration and a serene, relaxing atmosphere.

The public aquarium simulator. Design your displays, look after your fish, manage your staff and keep your guests happy! It's all in a day's work as the curator of your very own Megaquarium.

Why similar: Underwater 62.5% ★, Relaxing 14.6%, Simulation 13.3%, Casual 6.4%, Indie 1.7%

Why You'll Like It: While more management-focused, it provides a satisfying way to build and watch a thriving aquarium ecosystem.

Fishery is a stylized aquarium simulation game. Harness your creativity to build and maintain beautiful aquatic habitats. Then relax and watch your beautiful fish enjoy their home.

Why similar: Underwater 38.6% ★, Nature 18.2%, Life Sim 11.3%, Relaxing 11.2%, Immersive Sim 9.1%

Why You'll Like It: Features realistic fish behavior and a focus on creating a balanced, natural-looking underwater environment.

Control a pond's ecosystem; experiment with what you can do and see what happens. Among Ripples is a meditative ecosystem management simulator; you add different creatures to the pond and see how they interact.

Why similar: Underwater 36% ★, Nature 17.2%, Relaxing 13.5%, Simulation 11%, Atmospheric 5.6%

Why You'll Like It: A peaceful pond management simulation that focuses on the balance of aquatic life.

Build beautiful aquariums, care for exotic marine life, complete creative customer jobs, and grow your own aquarium business into a world-class oceanarium in this relaxing sandbox simulation.

Why similar: Underwater 43.7% ★, Relaxing 15.6%, Life Sim 12.3%, Immersive Sim 10.5%, Simulation 10%

Why You'll Like It: Provides a hands-on approach to building and maintaining aquariums in a relaxing, low-stakes environment.

Seed, Breed, Create. From single cell organisms to complex ecosystems. Evolve every part of your own unique aquarium / terrarium by applying scientifically accurate principles of natural and artificial selection, in Creatura - ultimate Virtual Evolution Vivarium Simulator.

Why similar: Underwater 35.4% ★, Nature 15.8%, Life Sim 10.4%, Relaxing 9.5%, Simulation 7.8%

Why You'll Like It: A deep sandbox simulation that lets you observe the evolution and life cycles of various creatures in a natural setting.

A relaxing game displayed as an overlay above system windows. Can't you have an aquarium? Now you can - on your monitor!

Why similar: Nature 32.5%, Relaxing 16.4%, Realistic 14%, Simulation 10.7%, Immersive Sim 9.8%

Why You'll Like It: A convenient, casual way to keep a relaxing aquarium running on your desktop while you work.

A happy aquarium that lives at the bottom of your screen! Tiny Aquarium is a social idle simulator that keeps growing, even when offline. Hatch, sell fish, decorate, go fishin’, and visit your friends’ aquariums with bite-sized daily sessions.

Why similar: Underwater 44.3% ★, Nature 26.3%, Relaxing 14.4%, Simulation 7.3%, Casual 3.9%

Why You'll Like It: A casual, collection-focused aquarium game that is easy to pick up and enjoy in short bursts.

FLOW is an extremely short psychological horror adventure video game. Wake up in the shoes of Flo, a 19-year-old, and embark on an adventure into a strange and wonderful world. The more you investigate, the more you can learn about the truth behind the universe.

Why similar: Indie 51.7%, Atmospheric 48.3%

Why You'll Like It: A minimalist, underwater-themed game that focuses on fluid movement and a hypnotic, relaxing experience.

Fish culture in reality is expensive and time-consuming! In this game, your desktop is connected to the sea and lake, where you can purchase various types of fish and cultivate on-hook without affecting the computer operation. It's enjoyable to watch the fish swim freely on your computer desktop...

Why similar: Simulation 29.2%, Relaxing 21.1%, Realistic 16.1%, Casual 15.7%, Atmospheric 9.7%

Why You'll Like It: A simple, casual simulation that brings the calming presence of fish to your computer screen.

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.

Why similar: Underwater 49% ★, Nature 20.5%, Life Sim 11%, Relaxing 10.2%, Simulation 5.2%

Why You'll Like It: Combines aquarium management with idle mechanics for a low-effort, relaxing experience.

Submerge yourself in one of the most immersive diving simulators to date. Gather your gear, choose your diving spot and discover what lies beneath the surface as you venture deep into the unknown.

Why similar: Underwater 48.8% ★, Nature 22.2%, Relaxing 14.8%, Simulation 7.5%, Casual 3.5%

Why You'll Like It: Offers a serene and immersive underwater exploration experience with a focus on nature and discovery.

Subside is an immersive aquatic VR experience with multiple areas to explore and lifelike aquatic creatures to interact with. Crafted with unparalleled realism, it aims to replicate the nuances of real-life swimming and diving in shallow waters

Why similar: Underwater 44.3% ★, Nature 15.4%, Simulation 10.5%, Relaxing 9.1%, Realistic 7.7%

Why You'll Like It: An immersive, VR-compatible underwater experience that focuses on the beauty of aquatic life.

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!

Why similar: Nature 42.6%, Relaxing 29.4%, Simulation 18.9%, Casual 8.1%, Singleplayer 1%

Why You'll Like It: A simple, pixel-art pond simulation that focuses on the meditative act of fishing and observation.

"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. 

Why similar: Underwater 51.4% ★, Relaxing 17.8%, Life Sim 9.6%, Simulation 8.5%, Atmospheric 7.1%

Why You'll Like It: Pairs a relaxing aquarium aesthetic with lofi music for a perfect ambient experience.

Relax and catch fish in beautiful environments while your crew works for you, even offline. Hire crewmates, collect pets, sail ever-bigger boats, and uncover layer after layer of progression. Simple to start, surprisingly deep.

Why similar: Relaxing 43.3%, Atmospheric 19.5%, Simulation 19.2%, Casual 12%, 3D 6%

Why You'll Like It: A casual, relaxing fishing game that emphasizes the simple pleasure of the activity.

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.

Why similar: Underwater 69.8% ★, Simulation 10.6%, Relaxing 8.5%, Casual 6.9%, Indie 2.6%

Why You'll Like It: A relaxing, nature-themed idle game that shares the cozy, low-stress appeal of My Koi.

Instant town building toy. Place housing blocks and watch them transform, piece by piece, into idyllic ocean-side towns, pastoral gardens, or sweeping cities on the sea.

Why similar: Nature 27.6%, Relaxing 24.7%, Procedural Generation 13%, Simulation 12.7%, Atmospheric 10.8%

Why You'll Like It: While not about fish, it shares the 'toy-like' and purely aesthetic, relaxing nature of My Koi.

A chill game about using plants to overgrow abandoned wasteland dioramas

Why similar: Nature 38.9%, Relaxing 20.8%, Procedural Generation 11.1%, Atmospheric 11%, Simulation 9.2%

Why You'll Like It: A relaxing, nature-focused game where you watch plants reclaim urban environments, offering a similar meditative vibe.

Unpacking is a zen puzzle game about the familiar experience of pulling possessions out of boxes and fitting them into a new home. Part block-fitting puzzle, part home decoration, you are invited to create a satisfying living space while learning clues about the life you’re unpacking.

Why similar: Relaxing 46.5%, Life Sim 18.4%, Simulation 13%, Atmospheric 9.1%, Casual 8.4%

Why You'll Like It: A meditative, low-stress game that focuses on the satisfaction of organizing and creating a cozy space.

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!

Why similar: Nature 31.8%, Underwater 30.3% ★, Relaxing 17.9%, Simulation 9.6%, Atmospheric 5.4%

KOI is an award-winning exploration adventure game that details the story of a small koi on a grand adventure

Why similar: Casual 69%, Indie 31%

Why You'll Like It: An indie adventure game that features a beautiful, serene art style and a relaxing soundtrack.

Create a vibrant, personal fish pond right on your desktop! Easily raise idle fish, collect cute species, and customize your digital space. Earn continuous rewards even while offline, decorate freely with simple taps and soothing sounds, build your serene desktop oasis effortlessly.

Why similar: Underwater 39.9% ★, Relaxing 15.2%, Simulation 15.1%, Life Sim 11.2%, Atmospheric 8.7%

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.

Why similar: Underwater 36.6% ★, Nature 22%, Relaxing 19.3%, Atmospheric 8.4%, Simulation 7.6%

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.

Why similar: Underwater 40.6% ★, Relaxing 12.3%, Nature 11.7%, Simulation 9.9%, Realistic 7.1%

With Me: Aquatic Time is a gamified time management tool. With relaxing lo-fi music and white noise, fish swim across your desktop as a cozy companion. Earn fish coins by focusing on goals, nurture aquatic creatures and collect encyclopedia to build your unique cyber aquarium!

Why similar: Underwater 31.1% ★, Nature 19.4%, Relaxing 13.8%, Life Sim 12.1%, Immersive Sim 9.8%

Watch the bottles quietly flowing down the river, listen to the pleasant sound of running water, throw small stones into the water, and discover the small animals living by the river... I believe you will definitely gain a wonderful mood.

Why similar: Underwater 40.4% ★, Nature 26%, Relaxing 17.9%, Casual 5.4%, Realistic 4.3%

Hunt and eat other fish - simply, grow into larger beasts!

Why similar: Underwater 76.6% ★, Simulation 16%, Realistic 2.8%, Atmospheric 2.1%, Indie 1.5%

Raise, Collect, Trade! Discover rare fish, grow your collection, and build a living aquarium right on your desktop.

Why similar: Simulation 35.6%, Life Sim 31.9%, Relaxing 31.2%, Singleplayer 1.2%

Put Fischer on your desktop as your ultimate study and work buddy. He'll fish quietly in the corner, taking care of it all—you just drop in occasionally to collect your rewards, unlock new fish, upgrade your rod, while enjoying that calming, healing atmosphere.

Why similar: Relaxing 51%, Atmospheric 22.4%, Casual 17%, Indie 6%, Singleplayer 3.5%

Fantasy Aquarium offers an effortless way to enhance your gaming experience. You can nurture a diverse range of small fish with unique characteristics and construct a vibrant fantasy world from scratch, transforming mundane fish-keeping into an engaging pursuit.

Why similar: Underwater 36.1% ★, Relaxing 23%, Life Sim 15.8%, Simulation 11.9%, Casual 6.9%

Get your first job in the Aquarist! Learn how to set up aquarium, decorate it and take care of your fish!

Why similar: Underwater 39.9% ★, Nature 20.1%, Relaxing 14.8%, Immersive Sim 10.5%, Simulation 8.7%

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.

Why similar: Nature 35.4%, Relaxing 23.5%, Simulation 14.5%, Life Sim 13.4%, Atmospheric 8.2%

A cozy idle aquarium overlay that brings your desktop to life with pixel-art fish. You can hatch, breed, and collect fishes in thousands of genetic combinations. Dress them up with accessories, watch them grow from eggs to adults, and unlock playful upgrades through a skill tree.

Why similar: Underwater 69.1% ★, Nature 30.9%

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).

Why similar: Underwater 59.2% ★, Relaxing 21.8%, Simulation 13%, Casual 5.9%

Real VR Fishing recreates real-world locations. Start across 40 maps, then expand to 95 fishing spots and 300+ species through DLC. Cast, feel every bite, and build your own aquarium — solo or with up to 3 friends. Pure, relaxing catch-and-release, in VR.

Why similar: Underwater 42.3% ★, Nature 17.8%, Relaxing 11.8%, Realistic 9.6%, Immersive Sim 9.4%

Start out on an island with a basic rod. Progress into a radar-wielding master fisher-cat scouring the sea for the biggest and baddest fish. Each fish has unique behaviors that you will learn to exploit as you tailor your arsenal of fishing rods to suit your style of play. Mrrrow!

Why similar: Underwater 47.9% ★, Nature 23.2%, Relaxing 14.1%, Simulation 6.3%, Casual 5%

Fish Game is a detailed and highly “sofishticated” freshwater aquarium simulator, lovingly crafted *by* enthusiasts *for* enthusiasts! Featuring fish with personalities and dynamic relationships, water quality modeling, and so much more! Made with support from our friends at Smarter Every Day!

Why similar: Underwater 46.5% ★, Nature 22.2%, Life Sim 13.9%, Immersive Sim 13.6%, 3D 3.8%

Fish around the globe using float, bottom, spinning, or casting gear, and catch over 60 realistic fish species. Play solo or online in normal, realistic, or sandbox mode! Explore stunning locations, switch to an underwater cam, and fill your trophy room!

Why similar: Underwater 29.8% ★, Nature 14.1%, Relaxing 13.7%, Realistic 11.5%, Simulation 9.6%

A relaxing life-sim that lives on the bottom of your screen while you do other things.

Why similar: Life Sim 35.5%, Relaxing 33.7%, Simulation 21.6%, Casual 9.2%

A simulation game about the life story of a jellyfish. In this game, I will present the full life cycle of a jellyfish: from an egg to a hydra and finally, after a not very long journey it becomes an adult jellyfish. A work of interactive art to bring the most beautiful of sea creatures to your screen.

Why similar: Beautiful 35.9% ★, Nature 16.2%, Simulation 13.8%, Relaxing 11.1%, Casual 7.7%

The ultimate high-tech rubber duck simulation, Placid Plastic Duck brings you dangerous levels of relaxation. With chill music, dreamy 3D graphics, and many different happy ducks, your only priority is to float around. Zero Ducks given.

Why similar: Relaxing 26.5%, Life Sim 16%, Immersive Sim 15.1%, Simulation 11.4%, Realistic 10.7%

Bring Nature Home! Experience Aquascapers, a single-player and co-op aquascaping simulation that invites you and friends to discover and gather various ornamental resources for your aquascaping projects. Enhance your business and dominate the market!

Why similar: Life Sim 21.6%, Immersive Sim 16.1%, Relaxing 15.7%, Simulation 15.4%, Realistic 13%

Beyond Blue is a single-player narrative adventure that takes you deep into our planet’s beating blue heart. Explore the awesome wonder and unbounded mystery that exists within the world’s ocean.

Why similar: Underwater 72.2% ★, Simulation 9%, Nature 7.7%, Relaxing 3.6%, Casual 2.4%

Fishing Inc is a cozy incremental fishing game! Catch fish, earn cash, and unlock powerful skills. Master new ponds, fill your Fish Log with Legendary catches, and become the ultimate angler!

Why similar: Nature 35.6%, Relaxing 35.1%, Simulation 13.2%, Casual 10.4%, Indie 3.9%

A tiny, cozy idle fishing desktop companion about quiet progress, handcrafted islands, and stories hidden beneath the waves. Discover new species, upgrade your gear, customize your gears and let your fisher work peacefully in the background.

Why similar: Relaxing 47.7%, Atmospheric 21.7%, Casual 14.2%, 3D 9.3%, Indie 4.3%

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

Why similar: Nature 46.9%, Simulation 16.1%, Relaxing 15.3%, Life Sim 12.2%, Casual 6%

Craft your dream fishing experience in this engaging tycoon idler. Stock your pond with rare fish, build and upgrade your shop, attract eager customers, and manage your business to become a legendary fishing haven.

Why similar: Relaxing 45.5%, Casual 45.4%, Indie 6.1%, Singleplayer 3%

A cozy idle game that sits anywhere on your desktop. Watch the frog cut grass, upgrade his tools, and decorate the island while you work or relax.

Why similar: Nature 35.4%, Relaxing 26.7%, Life Sim 15.4%, Simulation 8.6%, Casual 7.3%

Dive into the vibrant world of aquatic retail with Aquatic Store Simulator! Take on the challenge of managing your underwater-themed supermarket, blending business management with the beauty of marine life. Stock shelves with exotic fish, decorations, set prices, take payments and maintain aquariums

Why similar: Relaxing 21.4%, Life Sim 19.1%, Immersive Sim 16.6%, Realistic 13.9%, Simulation 13.8%

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.

Why similar: Nature 34.8%, Relaxing 20.5%, Simulation 19.9%, Life Sim 8.1%, Realistic 8%