Koi Fish Pond - Idle Merge Game
CasualFree · Play in your browser · Mobile friendly
About Koi Fish Pond - Idle Merge Game
An addictive idle merging game. Build your own Koi fish company and grow your business. Release your Koi fishes into the pond and earn money every time they cross the finish line. Buy new Koi fishes (or collect them from the gift boxes), and merge the same level Koi fishes to upgrade into a new type. The higher-level of the Koi fishes, the more money you will earn. Use your earnings to buy upgrade packages in the Shop to help you make money faster!
Koi Fish Pond - Idle Merge Game is a free online game in the Casual category on FizPlay. Press Play to start instantly in your browser on desktop or mobile with no download or installation. Topics: business, fish, idle, tycoon, timekiller, kids friendly. Browse more casual games if you like this one.
How to play
Tap and drag to release your Koi fishes into the pond and earn money every time they cross the finish line. Tap on the fish in the tank to move it back. Drag and drop a fish on another one (of the same type) to merge them into a new/upgraded type. You can buy more tanks and additional fish-fairways in the Shop.
Added Oct 20, 2026 · Category: Casual
