Success chance
The chance that the breeding attempt succeeds, based on parent age, Energy, compatibility, preferences, and relationships.
Horse breeding in TRM
Breed the next generation
Choose a sire and dam, compare the pairing, and breed new horses for your stable.
Breeding preview
Check the pairing before breeding
Choose horses from your stable or use available rentals. The breeding preview shows the success chance, expected foal quality, arrival time, compatibility rating, and total cost.
Foal outlook
A general estimate of expected foal potential based on both parents.
Total cost
The breeding fee plus any rental costs. The fee is charged whether the attempt succeeds or fails.
Paternal line
Bloodline comes from the sire
The sire passes his Bloodline to the foal. Bloodlines help define the family line and affect pairing compatibility with dams.
Use a stallion from your own stable or rent one from another player’s stable.
Maternal line
Heritage comes from the dam
The dam passes her Heritage to the foal. TRM compares the dam's Heritage with the sire's Bloodline to rate compatibility from Poor to Excellent.
Higher compatibility improves success chances and potential, but parent health, Energy, and age also matter.
Eligibility and arrival
Breeding unlocks after your first race
Complete your first official race to unlock breeding. Parents must be healthy, between 3 and 12 years old, and have at least 60 Energy.
Age 3+Minimum breeding age
HealthyRequired status
3 daysFoal arrival time
Make room for the foal.
A successful foal arrives after three days. Make sure your stable has an open space when it is ready to deliver.
Breeding questions
Frequently asked questions
Does TRM simulate real-world genetics?
No. TRM uses a strategic game system designed for fun and gameplay, not real-world genetics.
Can I rent both parents?
Yes. If you don't own eligible horses, you can rent a sire, a dam, or both.
Is breeding always successful?
No. Every pairing has a success chance between 25% and 75%. The breeding fee is charged regardless of outcome.
What does a foal inherit?
The foal receives its Bloodline from the sire and Heritage from the dam. Its abilities, preferences, personality, color, and traits come from both parents with some natural variation.
Plan the next generation