Chestnut horse from the official Horses of Hoofprint Bay library art Hoofprint Bay Play on Steam

Breeding horses in Hoofprint Bay

Four breeding paths are documented: the town broker at 100 percent, your own stallion at 100 percent and free, fresh semen at 85 percent for 10 coins, and frozen semen at 70 percent for 20 coins. A foal reaches adulthood in 20 days.

Mare Feather and foal Jubilee from the official Steam screenshots

The breeding station costs 1,500 at stage 1, 5,000 at stage 2, and 15,000 at stage 3, with daily costs of 15, 40, and 100. Stage 1 is live cover. Stage 2 adds fresh semen and a foal simulator. Stage 3 adds frozen semen. Broker fees start at 100 and rise with potential. One guide sketches strength and endurance as the parents’ average plus a dice band: unrelated −4 to +11, half kin −8 to +7, full kin −12 to +3, then ±2 for each inheritance trait. Strength clamps at 25–100 and endurance at 20–100.

The pregnancy timeline in that same guide runs from breeding on day 0, no riding on day 4, birth on day 8, a yearling on day 12, and adulthood on day 20. A stallion sharing a stall has a stated 25 percent daily chance to cover a mare. A pregnant boarder draws a 500 coin penalty. The foal calculator uses only these published bands.

Related guides

Questions

Is the formula official?

No studio formula was published. The bands come from one public guide, and the calculator says so.

Sources