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How many copies did Forts sell?

Estimated copies sold
≈ 870k–1.4M
$3.6M–$9.6M after Steam's cut $6.5M–$14.8M before the cut
from 25k reviews (Very Positive)

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

Copies, estimated from reviews

typical (middle half) 379k–1.2M
best case 4.0M (Scrap Mechanic)
Games like Forts

The middle of these games

≈ 379k–1.2M copies

≈ $3.1M–$10.8M after Steam's cut

from ~15k reviews

Only the top fifth of 2019’s Steam releases earned about $34k gross, so plan for that or less.

All 8 of your similar games are hits.

Best case: Scrap Mechanic at ≈ 3.0M–4.9M copies, ≈ $24.2M–$65.0M after Steam's cut.

What it took to get here
About half the games that made it here had over 9k reviews in their first month; the spread ran 3k to 122k.
The genre you'd be entering
Your set
Your set clusters on Building (7 of 8) and Base-Building (4 of 8).
The winners
Winners here lead with Building + Sandbox, priced around $29.
The era
The games you compared span 2017 to 2026, and 2 of your 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

Stormworks: Build and Rescue
2020
Est. copies
≈ 1.5M–2.4M
4.1x vs typical
SteamSpy 1M–2M
Est. revenue
$10.2M–$27.4M after Steam's cut $18.5M–$42.2M before the cut
$24.99
60k reviews
Very Positive
SandboxBase-Building
Airships: Conquer the Skies
2018
Est. copies
≈ 201k–326k
SteamSpy 200k–500k
Est. revenue
$1.4M–$3.7M after Steam's cut $2.5M–$5.7M before the cut
$24.99
7k reviews
Overwhelmingly Positive
Vehicular Combat4X
Scrap Mechanic
2026
Est. copies
≈ 3.0M–4.9M
8.4x vs typical
SteamSpy 2M–5M
Est. revenue
$24.2M–$65.0M after Steam's cut $43.9M–$100.0M before the cut
$28.99
122k reviews
Very Positive
BuildingSandbox
Cosmoteer: Starship Architect & Commander
2022
Est. copies
≈ 318k–517k
SteamSpy 500k–1M
Est. revenue
$1.7M–$4.7M after Steam's cut $3.2M–$7.2M before the 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 $781k–$1.8M before the cut
$11.99
4k reviews
Very Positive
SurvivalOpen World Survival Craft
RoadCraft
2025
Est. copies
≈ 401k–652k
SteamSpy 200k–500k
Est. revenue
$4.4M–$11.9M after Steam's cut $8.0M–$18.3M before the cut
$39.99
16k reviews
Mostly Positive
SimulationBuilding
Gas Station Simulator
2021
Est. copies
≈ 680k–1.1M
1.9x vs typical
SteamSpy 500k–1M
Est. revenue
$3.7M–$10.1M after Steam's cut $6.8M–$15.5M before the cut
$19.99
27k reviews
Very Positive
SimulationEconomy
Stationeers
2017
Est. copies
≈ 318k–516k
SteamSpy 200k–500k
Est. revenue
$3.1M–$8.2M after Steam's cut $5.6M–$12.6M before the cut
$34.99
9k reviews
Very Positive
Early AccessSpace

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