186+ iOS apps & games curated and reviewed
With an average user rating of 4.6★, the koi fish game category is one of the App Store's strongest. Browse all 186+ apps and games we track, sorted so the most loved ones surface first.
Nurture and breed vibrant koi, guiding them through a serene journey to transform into majestic dragons. Customize your underwater sanctuary and create unique constellations in a breathtaking celestial realm.
Nurture and collect vibrant Koi fish in a serene underwater world. Watch them grow, evolve into majestic dragons, and discover hundreds of unique varieties. Share your collection with friends and enjoy a calming, visually stunning experience.
Create and manage your own virtual aquarium with realistic 3D fish. Buy, breed, and sell a variety of species, customize your tanks with decorations, and enjoy a lifelike aquatic experience.
Experience realistic 3D fishing with intuitive motion controls. Explore famous fishing spots, catch over 100 species of fish, and compete with friends in thrilling duels. Upgrade your gear and discover hidden treasures for a relaxing yet rewarding gaming experience.
Cultivate a vibrant aquatic ecosystem by raising, feeding, and breeding thousands of unique koi. Decorate your pond, interact with your fish, and explore friends' creations. Discover new koi through fishing and enjoy a serene, ad-free experience.
Create and manage your own vibrant 3D aquariums filled with a vast array of marine life. Buy, breed, and sell fish to expand your collection, customize your tanks with decorations, and enjoy realistic fish behavior and interactions.
An idle, relaxing game designed to relieve stress and calm the mind. Expand your aquarium, invite adorable fish friends, and enjoy a peaceful experience. Watch your underwater world grow and feel your worries melt away.
Care for a vibrant ocean reef and collect hundreds of sea creatures. Discover new species, learn facts about marine life, and decorate your sanctuary. Participate in special events and connect with friends to build thriving underwater worlds.
Discover and nurture an enchanted fish pond, collecting a variety of freshwater species like fish, frogs, and turtles. Decorate your sanctuary, learn about your creatures, and participate in events to unlock new content. Enjoy hours of relaxing and cozy gameplay as you prepare your aquatic friends for their release.
Dive deep into the ocean to catch a variety of fish. Upgrade your gear to reach new depths, discover rare species, and earn money even when you're offline. Can you uncover the ocean's secrets?
Lead a school of fish to grow by collecting others and swallowing opponents. Upgrade your fish to become the largest and rule the underwater kingdom. Engage in survival challenges and mini-games.
Breed and sell virtual fish to upgrade your aquarium and store. Discover over 400 unique species, nurture them with magical plants, and decorate your tank. Become the ultimate fish store tycoon in this real-time simulator.
Dive into an underwater world as an ordinary fish. Battle, eat, grow, and evolve to conquer the ocean. Merge with other fish, fight sharks, and ascend to become the ultimate overlord of the sea.
Create and customize your own vibrant underwater world with a vast array of fish, sea creatures, and decorations. Raise and breed exotic fish, discover new species, and connect with a community of fellow aquarium enthusiasts through chat and gifting.
Embark on a relaxing fishing adventure with serene visuals and calming music. Discover and collect a variety of fish across different destinations, upgrade your boat, and expand your island for new gameplay experiences. This game offers a meditative escape for your day.
Dive into a unique card puzzle experience combined with aquarium design and fish care. Solve thousands of challenging solitaire levels, decorate vibrant aquariums, and interact with adorable talking fish. Compete in exciting events and connect with other players for exclusive rewards.
Experience a classic Klondike solitaire game with a unique ocean theme. Build your own underwater world, collect beautiful fish, and enjoy thousands of levels with a smooth gaming experience. Automatic collection helps you finish games quickly.
This premium, single-player game offers a serene escape with mesmerizing koi breeding and collection. Enjoy tranquil gameplay, enchanting music, and a visually stunning experience without ads or in-app purchases. Perfect for relaxation and mindful breaks.
Embark on a unique multiplayer fishing adventure filled with ancient secrets, lost monsters, and mysterious treasures. Explore diverse locations, catch over 600 species, and uncover hidden stories. Customize your gear, compete in duels, or join a clan to build a legacy.
Lead a school of fish to survive in a dangerous ocean. Grow your group, collect eggs, and discover new species while avoiding predators. Enjoy vibrant graphics and engaging missions.