How many copies did Horse Farm sell?

An estimated 10k to 16k copies, based on its 333 Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Horse Farm make?

Horse Farm is free to play, so there is no copy-sales revenue to estimate.

How big is Horse Farm?

Estimated owners: ≈ 10k–16k; from 333 reviews (Mixed)

A labeled estimate from the public review count (adjusted for release year), not exact sales. Owner data cross-checked with SteamSpy.

Does this actually work?

We left Horse Farm out and predicted the genre from its 8 similar games. Every figure here, including Horse Farm's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 3.7M–5.4M

best case 11.9M (People Playground)

The Sandbox lane

A big, proven genre, though hit-driven: most sell around 4.4M copies, while a few break out far above.

A typical game

≈ 4.4M copies

≈ $52.8M after Steam's cut

from ~93k reviews

Best case

≈ 11.9M copies

People Playground · ≈ $45.9M after Steam's cut

from 314k reviews

A breakout hit, far above a typical game.

5 of your 8 games sit in the typical range; 3 are breakout hits far above it.

Copies and revenue are rough lifetime estimates from the review count; typical figures are medians per column, so they can come from different games.

The lane you'd be entering

Winners here lead with Sandbox + Singleplayer, priced around $20.
The breakout hits carry Moddable + Singleplayer; a typical game here doesn't.
None of the games you compared shipped in the last two years; the newest is from 2020. That says more about your picks than about the market, so add newer similar games to read the timing.
A typical game here lands in Diamond ($1M+ before Steam's cut, est.). Tiers: Chris Zukowski's benchmark tiers.

Similar games

Game	Price	Reviews	Tags	Est. copies	Est. revenue
Cities: Skylines 2015	Est. copies ≈ 13.5M–21.9M 3.1x vs typical SteamSpy 10M–20M	Est. revenue $111.0M–$298.5M net $201.9M–$459.3M gross	$29.99	290k reviews Very Positive	City BuilderSimulation +6
Planet Zoo 2019	Est. copies ≈ 2.8M–4.5M SteamSpy 2M–5M	Est. revenue $34.2M–$91.9M net $62.1M–$141.3M gross	$44.99	96k reviews Very Positive	ManagementSimulation +6
Fallout Shelter 2017	Est. copies ≈ 2.8M–4.6M SteamSpy 2M–5M	Est. revenue Free	Free	82k reviews Very Positive	Free to PlayBase-Building +6
House Flipper 2018	Est. copies ≈ 3.4M–5.5M SteamSpy 2M–5M	Est. revenue $23.1M–$62.1M net $42.0M–$95.5M gross	$24.99	110k reviews Very Positive	SimulationDesign & Illustration +6
Blender 2015	Est. copies ≈ 4.1M–6.7M SteamSpy 5M–10M	Est. revenue Free	Free	89k reviews Overwhelmingly Positive	Animation & ModelingSoftware +6
Trove 2015	Est. copies ≈ 4.3M–7.0M SteamSpy 10M–20M	Est. revenue Free	Free	93k reviews Mostly Positive	Free to PlayOpen World +6
The Sims™ 4 2020	Est. copies ≈ 5.2M–8.4M 2.1x vs typical SteamSpy 10M–20M	Est. revenue Free	Free	197k reviews Very Positive	Life SimCharacter Customization +6
People Playground 2019	Est. copies ≈ 9.1M–14.7M 3.4x vs typical SteamSpy 5M–10M	Est. revenue $24.9M–$66.9M net $45.2M–$102.9M gross	$9.99	314k reviews Overwhelmingly Positive	SandboxGore +6