Koi Breeders is a trick-taking, bag-building, and auction game where players compete to become the most successful koi breeder by harvesting valuable koi, entering them in koi shows, and selling their prized fish to collectors and dealers.
Each season begins with trick-taking, where winning tricks lets you harvest koi from the shared pond bag. You'll then decide how best to use your collection: enter your finest koi in the Koi Show, offer a valuable pair to a Collector, or sell a group of koi to a Koi Dealer.
After three seasons, the breeder who has earned the most money wins.