Koi Fish Pond - Idle Merge Game by BestGamesFreePlay.com

Merge colorful koi to expand your pond in this idle merge game. Combine multiple fish by dragging them into one another to unlock higher-tier species while passively generating coins. Progress by upgrading your pond space and unlocking new habitats to maximize your aquatic collection. The tranquil water garden setting adds a calm atmosphere to the merging challenge. Key Features • Progressive merge combination system • Drag and drop fish merging controls • Incremental pond expansion upgrades • Passive coin generation mechanic • Serene aquatic garden theme