Koi Fish Pond - Idle Merge Game

Combine colorful koi through merging actions to enhance your fish pond ecosystem. This idle merge game invites players to strategically fuse fish varieties and unlock new species while balancing resource management and pond upgrades. The quiet aquatic setting encourages a casual pace as you aim to create the most vibrant and diverse koi collection. Key Features • Merge-based fish growth system • Tap controls for merging actions • Progressive pond expansion levels • Idle resource accumulation mechanic • Serene aquatic environment theme