0+ iOS apps & games curated and reviewed
With an average user rating of 4.5★, the koi-koi game category is one of the App Store's strongest. Browse all 0+ apps and games we track, sorted so the most loved ones surface first.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.8★ (30K) | Yes | Yes | Aug 2026 |
| 2 |  | Free | 4.7★ (2.1K) | Yes | Yes | Aug 2026 |
| 3 |  | Free | 4.8★ (4.8K) | No | No | Aug 2026 |
| 4 |  | Free | 4.9★ (11K) | Yes | Yes | Aug 2026 |
| 5 |  | Free | 4.6★ (553) | Yes | Yes | Aug 2026 |
| 6 |  | $6.99 was $9.99 | 4.6★ (203) | No | No | Aug 2026 |
| 7 |  | Free | — | No | Yes | Jul 2026 |
| 8 |  | $1.99 | 4.3★ (120) | No | No | Aug 2026 |
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.
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.
This tile-matching puzzle game offers a relaxing solitaire experience with large, easy-to-see tiles and an intuitive interface. It features classic gameplay with thousands of levels, offline play, and a unique two-player mode for shared challenges.
Experience a traditional Japanese card game played with Hanafuda cards. The objective is to form specific card combinations, known as 'yaku', before your opponent. Choose to cash in your points or continue playing for higher scores by saying 'koi-koi'.
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.
Experience a classic Japanese card game with vibrant visuals and a user-friendly design. This app offers a blend of strategy and chance, perfect for both beginners learning the ropes and experienced players seeking a challenge. Play against a charming fish character or a friend.
Experience a traditional Japanese card game in 3D. Match cards to collect them and score points. Play rounds until your life points run out, aiming to earn the most sentences.
Embark on a serene adventure as a koi fish, navigating diverse landscapes and solving intricate puzzles. Uncover hidden memories and find inner peace in a beautifully rendered world.
Engage in a captivating match-3 puzzle adventure to design and decorate unique underwater aquariums. Collect adorable fish and pets while exploring thousands of levels and participating in exciting in-game events.
Breed and discover unique koi fish in an infinite procedurally generated world. Collect your favorite patterns as trading cards and share them with others. Explore new mutations and fill your koi book.
This game offers a tranquil escape for those seeking stress and anxiety relief. It provides a zen environment with calming sounds and simple tapping gameplay to help you relax and unwind. Build and expand your virtual oasis, collect animals, and enjoy a peaceful experience.
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.
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.
Create a vibrant rainforest sanctuary by collecting and nurturing hundreds of real butterfly species. Watch them grow through their life cycle, learn fascinating facts, and expand your magical forest with beautiful decorations. Enjoy relaxing gameplay with a calming soundtrack and discover new species through missions and events.
Create a serene Japanese pond and raise a variety of koi carp in this relaxing idle game. Develop your garden, feed your fish, and unlock rare breeds to progress through different challenges.
Create and nurture your own virtual koi pond. Customize fish, environments, and watch them grow. This relaxing app offers a serene escape with beautiful graphics and calming sounds.
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.