Koidoku: Koi Water Puzzle

Draw one stream. Fill every tile. Set the koi free. Koidoku is a calm, clever path puzzle. Start at the spring and draw a single stream of water through every tile on the board, reaching the numbered stones in order. Each stone you reach releases a koi that leaps into your stream and swims along it. Simple to learn, hard to master. RAISE YOUR OWN KOI POND Every puzzle you solve earns food for your pond. Feed your koi and watch them grow, hatch eggs to discover rare varieties, and unlock lotus flowers, lanterns, a moon bridge, a waterfall and fireflies at night. Three new tasks every day keep your pond thriving. A NEW PUZZLE EVERY DAY One daily puzzle, the same for everyone. Keep your streak alive (streak freezes save you on busy days) and see how your time compares with friends and players around the world. PLAY WITH FRIENDS • Add friends with a 6-letter code and see who's fastest on today's puzzle • Koi League: start a league for your family, office or friends' group. Everyone plays the same 5 boards before the deadline, and the best total time wins • Koi Duel: race the same boards in your own time, best of 1, 3 or 5 • Challenge a friend to beat your time on any level FEATURES • 750 puzzles across Easy, Medium and Hard • 5 worlds to explore: Zen Garden, Frozen River, Desert Oasis, Coral Reef, Lantern Canal • 14 koi varieties to collect, from common Kohaku to the legendary Reef Visitor • Achievements and leaderboards with Game Center • Your progress saves to iCloud • Soothing water sounds and koi that really swim • No account or sign-up needed Koidoku is free to play with ads. You can remove ads forever with a single purchase.