Tranquil Koi 鯉の池
Release date: Nov 11, 2025
Developers: FroggySoggy
Publishers: FroggySoggy
Genres: Casual, Indie, Simulation
Categories: Single-player, Camera Comfort, Custom Volume Controls, Mouse Only Option, Playable without Timed Input, Save Anytime, Stereo Sound, Steam Cloud, Family Sharing
Supported languages: English, French, German, Finnish, Japanese, Korean, Polish, Russian, Simplified Chinese, Traditional Chinese, Turkish

Build your dream koi pond in Tranquil Koi , a relaxing idle game. Start with a single pond and fill it with over 100 stunning koi breeds. Raise them, sell them, and unlock rare varieties to grow your collection. Decorate with plants, stones, and ornaments to design your perfect aquatic haven. 🐟 100+ Unique Koi – Collect, raise, and trade vibrant breeds. 🌿 Customizable Ponds – Design with decorations and ornaments. 💧 Idle Progression – Your pond grows even while you’re away. 🎵 Peaceful Atmosphere – Gentle animations and soothing sound. Create a sanctuary, collect them all, and let the ripples carry your worries away.