How much revenue did Forts make?

$3.6M–$9.7M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Forts sell?

Q: How many copies did Forts sell?

876k to 1.4M copies, based on its 25k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 876k–1.4M; $3.6M–$9.7M after Steam's cut $6.6M–$14.9M before Steam's cut; from 25k reviews (Very Positive)

Copies are estimated from the public review count, adjusted for release year, and cross-checked against SteamSpy's own estimate.

Did the prediction match what actually happened?

We hid Forts and predicted how it would do from its 8 similar games. Every figure here, including Forts's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 381k–1.2M

best case 4.0M (Scrap Mechanic)

Games like Forts

A typical game among these

≈ 381k–1.2M copies

≈ $3.1M–$10.9M after Steam's cut

from ~15k reviews

Only the top fifth of 2019's Steam releases earned $34k or more before Steam's cut, so plan for that or less.

All 8 of the similar games are hits.

Best case: Scrap Mechanic at ≈ 3.1M–5.0M copies, ≈ $24.3M–$65.4M after Steam's cut.

What their first month looked like

About half the games that made it here had over 9k reviews in their first month; the range was 3k to 122k.

The genre you'd be entering

These games: The similar games share Building (7 of 8) and Base-Building (4 of 8).
The winners: Winners here lead with Building + Sandbox, priced around $29.
When they shipped: The similar games span 2017 to 2026, and 2 of the 8 shipped in the last two years.

How these numbers were worked out

A hit here: 1,000+ reviews, roughly $150k+ before Steam's cut (a standard indie benchmark).

Copies come from each game's reviews times a sales-per-review rate that falls with release age, from about 31 for the most recent game here to about 43 for the oldest, then widened into a range; revenue rides on that estimate times price. Source: GameDiscoverCo (2020) and VG Insights (2021).

Similar games

Game	Est. copies	Est. revenue	Price	Reviews	Tags
Stormworks: Build and Rescue 2020	Est. copies ≈ 1.5M–2.4M 4.1x vs typical SteamSpy 1M–2M	Est. revenue $10.3M–$27.6M after Steam's cut $18.7M–$42.5M before Steam's cut	$24.99	60k reviews Very Positive	SandboxBase-Building
Airships: Conquer the Skies 2018	Est. copies ≈ 201k–327k SteamSpy 200k–500k	Est. revenue $1.4M–$3.7M after Steam's cut $2.5M–$5.7M before Steam's cut	$24.99	7k reviews Overwhelmingly Positive	Vehicular Combat4X
Scrap Mechanic 2026	Est. copies ≈ 3.1M–5.0M 8.4x vs typical SteamSpy 2M–5M	Est. revenue $24.3M–$65.4M after Steam's cut $44.2M–$100.6M before Steam's cut	$28.99	123k reviews Very Positive	BuildingSandbox
Cosmoteer: Starship Architect & Commander 2022	Est. copies ≈ 320k–521k SteamSpy 500k–1M	Est. revenue $1.8M–$4.7M after Steam's cut $3.2M–$7.3M before Steam's cut	$19.99	13k reviews Very Positive	Sci-fiSingleplayer
Dig or Die 2018	Est. copies ≈ 130k–212k SteamSpy 200k–500k	Est. revenue $430k–$1.2M after Steam's cut $782k–$1.8M before Steam's cut	$11.99	4k reviews Very Positive	SurvivalOpen World Survival Craft
RoadCraft 2025	Est. copies ≈ 407k–661k SteamSpy 200k–500k	Est. revenue $4.5M–$12.0M after Steam's cut $8.1M–$18.5M before Steam's cut	$39.99	16k reviews Mostly Positive	SimulationBuilding
Gas Station Simulator 2021	Est. copies ≈ 687k–1.1M 1.9x vs typical SteamSpy 500k–1M	Est. revenue $3.8M–$10.2M after Steam's cut $6.9M–$15.6M before Steam's cut	$19.99	28k reviews Very Positive	SimulationEconomy
Stationeers 2017	Est. copies ≈ 320k–520k SteamSpy 200k–500k	Est. revenue $3.1M–$8.3M after Steam's cut $5.6M–$12.7M before Steam's cut	$34.99	9k reviews Very Positive	Early AccessSpace