Lock & LayDesktop

A free ball python breeding game · real genetics · one shared clock

Start with one plastic rack and two snakes. End up with the animal everyone else wants.

Already breeding?

The desktop game: a female in her tub, pulled out of a rack in the 3D snake roomOn desktopThe desktop game: an animal page with a photo of a Cypress Clown Axanthic Puzzle, her genes and her valueOn desktopThe desktop game: the incubator, with two clutches pipping and ready to cutOn desktop
Your room in 3D. Pull any tub and there she is.

Screenshots from the desktop game at lockandlay.com.

Right nowReaching the room…

Roll the genes

Two random parents, the game's own inheritance, a clutch to cut. Nothing here is saved.
 
 

Come into the room

Welcome back. Your room kept going while you were gone.

Forgot it? On a device where you're signed in, it's in Settings → Account.

By continuing, including with Google or Discord, you confirm you are 13 or older and agree to the Terms and Privacy Policy. Same account and same room as the desktop game.

Fresh out of the egg

Reaching the room…

How a season goes

About a year of game time
1Rack up.A plastic shelf rack, six tubs, one strip of heat tape. Cheap racks work; the snakes just eat a little worse.
2The lock.She needs 1,350 grams and a year. He needs 550. Cool nights, warm days, patience.
3Lay and incubate.Fifty-eight days at 88 degrees. Don't roll the eggs. Don't peek more than you have to.
4Cut day.Every egg is a roll of the genes. Keep the best, list the good ones, wholesale the rest.

Top rooms

By what the collection is worth
Reaching the room…

Questions

Is it free?

Yes. It runs in your browser on a phone or a computer, with nothing to download and no ads.

Are the genetics real?

Inheritance follows real ball python morph genetics: recessives need two copies and hide as hets, incomplete dominants show with one copy and make a super with two, and dominants show with one. There are 86 genes off the morph lists, plus a handful that only turn up by hatching them.

Is it multiplayer?

Everyone shares one clock, one market and one feed. Buy and sell with other breeders, trade, lend out a proven male, visit open rooms and post your animals to Hatch.

What happens while I'm away?

The clock only runs while someone is in the room, and nothing in your room gets sick or dies while you're gone.

Is this a guide for real breeding?

No. It's a game, and the genetics are simplified for play. Use real breeders, vets and care guides for real animals.