HBG
Free to play ยท In active development

Breed horses
like a geneticist.

A hyper-realistic equine simulation with proper Mendelian coat-colour genetics, UK livery yards, real-world veterinary diseases, four seasons, and the long, slow craft of horsemanship.

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What's inside โ†“
What makes HBG different

Not a clicker. A simulation.

Every system in the game traces back to real horsemanship: the same diseases your vet treats, the same livery packages your local yard offers, the same coat-colour genes a 2024 testing lab can sequence.

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Real coat genetics

21 loci modelled exactly as a 2024 equine geneticist would describe them: Extension on MC1R, Agouti on ASIP, Cream on SLC45A2, all the white-pattern KIT alleles. Punnett squares actually predict the foal.

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UK livery yards

Six handcrafted yards spanning Cotswolds family stables to Perthshire premium sport-horse establishments. Choose DIY, Part, or Full livery per horse, billed weekly the way real yards do it.

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Veterinary realism

Laminitis, colic, mud fever, strangles, lameness, sweet itch, equine flu, tetanus. Every condition has the right trigger conditions and the right breed susceptibility. An Irish Cob is 3ร— more laminitis-prone than a Thoroughbred; a Connemara is 2.5ร— more prone to sweet itch. As it should be.

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Four seasons

Each year cycles through 30-day spring/summer/autumn/winter. Spring grass spikes laminitis 2.5ร—; winter doubles mud fever and brings biting cold that punishes under-rugged horses. Same seasonal rhythm a real UK yard runs on.

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Daily weather & forecast

Ten weather conditions (sunny, hot, rain, heavy rain, fog, frost, snow, thunderstorm and more) drawn from seasonal probability tables. Each shifts temperature and disease risk: heavy rain doubles mud fever; snow piles on lameness; rain knocks midges down so sweet itch eases. A 3-day forecast lets you plan the week's rugging.

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Personality: nature & nurture

Every horse carries three personality traits (temperament, boldness, trainability) set at birth from sire and dam, pulled toward the breed's nature, and shaped by your handling. A Thoroughbred runs sharper than a Shire. Strong bonds make horses more willing; show-ring success builds boldness; untreated illness leaves a wary mark. Each trait quietly tilts training rate, bond decay, show presence, and weather tolerance.

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Castration & gelding

Stallions carry hot-blooded biology: slower to bond, harder to train, more reactive in the ring. Gelding is a real horseman's decision: a ยฃ180 vet procedure with a 14-day recovery, a small complication risk, and a chance (not a guarantee) of a calmer, more willing horse afterwards. Castration before the growth plates close lengthens the horse a touch too. Permanent, irreversible, and weighed against losing the bloodline.

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Rugs, clips & comfort

Five rug types (fly, lightweight, medium, heavy, stable) and four clips (trace, blanket, hunter, full) with realistic 60-day coat regrowth. Comfort is a live warmth balance: natural coat plus rug versus today's temperature. A horse left under-rugged in a hard frost will lose health every turn. Buy your tack from the in-game Tack Shop.

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Bonding before skill

Trust is a real stat. A horse with low bond won't engage with training. Every great horseman from Xenophon to Ray Hunt would tell you the same. Hand-walk, groom, desensitise, then ride.

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Career & finances

Six equine occupations from Stable Hand to Freelance Farrier. Per-job XP, daily wages, and a full ledger of every transaction (wages in, vet bills out) so you can see exactly where your money goes.

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Passports & papers

Issue a UK-style equine passport with a registered name (locked once issued, like real life). Every yard works in both barn name and registered name.

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Educational at every step

Every term has an info panel covering what it is, why it matters, and the history. From the General Stud Book of 1791 to the Strangvac vaccine in 2021, the game teaches as you play.

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Shows & competition

Fourteen breed shows across four seasons, with in-hand, ridden, movement, foal, and breed-specific classes. Score combines conformation, training, bond, and breed fit the way a real judge weighs them up. Prize money, prestige tiers, and a full per-horse show record.

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Conformation scoring

Twelve polygenic traits (head, neck, shoulder, back, loin, hindquarter, legs, feet, bone, movement, and height) each inherited via the breeder's equation. Breed the best to the best and watch traits improve across generations; neglect farrier care and feet drift.

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Turn-based pacing

Each turn advances the game by one full day. Seasons change, horses age, care windows tick, and show schedules roll forward. A finite turn budget regenerates over real-world time, so you burn 20 days in a sitting and come back later with a fresh stack. No grinding, no FOMO.

Inside the game

See it in action

A look at the game as it stands today.

21
Genetic loci modelled
19
UK, Irish & world breeds
8
Equine diseases
14
Shows & competitions
6
Career paths
Founders

Nineteen breeds at launch

From the Dartmoor moorland pony to the Newmarket-bred sport horse, including the full British Native pony spread, the great heavies, and the carriage breeds. Each carries its own coat-colour pool, breed-typical height, and disease susceptibility.

British Native ponies
Welsh Cob (Section D) Connemara Pony Highland Pony Dartmoor Pony Fell Pony Irish Cob
Great heavies
Shire Horse Clydesdale Friesian Irish Draught
Carriage & sport
Cleveland Bay Irish Sport Horse Knabstrupper
Hot-bloods & worldwide
Thoroughbred Standardbred Arabian Quarter Horse Appaloosa American Paint Horse

Ready to start your yard?

Sign in with your Rare Breed Games account โ€” or create one free โ€” and you'll pick your foundation breed in the next minute.

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