Online breeding and trading game · Browser and phone · Free to play
Over 290 billion possible fish. Only you can breed yours.
An online breeding and trading game under the ice. Chase rare genes, discover new species, and become a famous breeder. Free to play in your browser.
No sign-up needed to start. Like it? Save your fish for free and play on any device.
Hatching right now
These fish are bred live in your browser from random genomes. Watch for a while: you will not see the same one twice.
Five ways to play
Play in short visits a few times a day. Clutches hatch and dives refill while you are away.
Breed
Pair fish and chase rare recessive traits: veil tails, glass scales, crystal crests, glowing lures.
Trade
Sell fish, run a shop on your deep, and bid in auctions. Good breeders get rich.
Rent a stud
Breed with another player's champion for a fee. They keep the fish, you keep the eggs.
Discover
Fill a book of 42,840 species. The first breeder of each one is credited forever.
Show off
Raise a living deep others can visit, join a school, and enter weekly shows and races.
A market run by players
Every fish is unique, so every sale matters. Prices are set by players, not by the game.
Market and auctions Always open
List fish at a fixed price or auction rare ones. Price history for every species shows what your bloodline is worth.
Stud services Breeding with others
Rent out your best fish as a stud with a fee and daily slots. Popular studs become famous, and their offspring sell for more.
Safe trades Escrow on every deal
Every trade, stud booking and lease is held by the game until both sides confirm. Nobody has to send first.
Merchant ranks Monthly
Climb the ranks by what other players pay you, and enter weekly shows and races for ribbons that raise a fish's value.
Questions
Is it free?
Yes. An optional membership adds room for more fish, a lower market fee and more shop and stud slots. Nothing you can buy changes a fish's genes, and chests are earned only by playing.
Where can I play?
In any browser, full screen on phone, tablet and desktop. Apps for iPhone and Android follow once the game is live.
Can I breed with other players' fish?
Yes. Book a stud from another player, set up a co-breeding contract that splits the clutch, or lease a fish for a few days. The game holds every deal safely until it is done.
Are all fish really different?
Every fish is grown from its own genome of 24 genes, with two copies of each, and drawn in 3D from those genes. With more than 290 billion trait combinations, two players will practically never breed the same fish.
When can I play?
Right now, free, with no sign-up. Pick a diver name and you’re in. If you like it, save your fish with email or Google (free) to keep playing, chat and trade with other players, and play on any device.
Be first to breed what no one has seen
Free to play in your browser, on phone, tablet or desktop.
Play now