Koi Farm
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About Koi Farm
Koi Farm is a game about playing with koi ponds. You crossbreed fish to explore an infinite number of procedurally generated koi patterns and discover mutations.
Breed koi
Use selective breeding to create koi, combining fish with interesting patterns and colors to refine them. The koi book guides you towards mutations you have not yet discovered.
Collect and share
Store your best koi as collectible trading cards. You can also generate koi codes and share them with other players, who can drop them into their games to spawn the fish.
Frequently asked questions
The best price for Koi Farm is $2.99 at Steam. It is the only shop with an offer that activates in your country.
The minimum requirements for Koi Farm are: Windows 7, 100 MB RAM, 300 MB storage. It runs on Windows only. The recommended specs are in the System requirements section.
No. Koi Farm is a single-player game.
Yes. Valve rates Koi Farm as Verified on the Steam Deck: it runs well out of the box.
Yes. Koi Farm is the full base game. You need nothing else to play it.
Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.
Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.











