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How many copies did Fortress Building Puzzle sell?

Estimated copies sold
≈ 471–766
$646–$2k after Steam's cut $1k–$3k before Steam's cut
from 19 reviews (Mixed)

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 Fortress Building Puzzle and predicted how it would do from its 8 similar games. Every figure here, including Fortress Building Puzzle's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 11k–262k
best case 1.8M (DiRT Rally 2.0)
Games like Fortress Building Puzzle

A typical game among these

≈ 11k–262k copies

≈ $39k–$5.9M after Steam's cut

from ~2k reviews

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

5 of the 8 similar games are hits.

Best case: DiRT Rally 2.0 at ≈ 1.4M–2.3M copies, ≈ $7.7M–$20.7M after Steam's cut.

What their first month looked like
About half the games that made it here had over 99 reviews in their first month; the range was 28 to 9k.
Games with under about 100 reviews in month one almost never recover.
The genre you'd be entering
These games
The similar games share Simulation (8 of 8) and Sports (7 of 8).
The winners
Winners here lead with Racing + Automobile Sim, priced around $20.
When they shipped
4 of the 8 similar games shipped in the last two years, so this genre is actively shipping.
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 36 for the oldest, then widened into a range; revenue rides on that estimate times price. Source: GameDiscoverCo (2020) and VG Insights (2021).

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Est. copies
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SteamSpy under 20k
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RacingSimulation
Gym Simulator 24
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≈ 66k–106k
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$234k–$629k after Steam's cut $426k–$968k before Steam's cut
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Aerofly FS 4 Flight Simulator
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Est. copies
≈ 36k–58k
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FlightRacing
DiRT Rally 2.0
2019
Est. copies
≈ 1.4M–2.3M
24x vs typical
SteamSpy 1M–2M
Est. revenue
$7.7M–$20.7M after Steam's cut $14.0M–$31.8M before Steam's cut
$19.99
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RacingAutomobile Sim
Project CARS 3
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≈ 88k–144k
1.7x vs typical
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RacingArcade
World Racing 2 - Champion Edition
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Est. copies
≈ 9k–14k
SteamSpy 20k–50k
Est. revenue
$24k–$65k after Steam's cut $44k–$99k before Steam's cut
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SportsAction
Glider Simulator
2024
Est. copies
≈ 6k–10k
SteamSpy under 20k
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$14k–$37k after Steam's cut $25k–$57k before Steam's cut
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SimulationFlight
Assetto Corsa EVO
2025
Est. copies
≈ 532k–865k
11x vs typical
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Mixed
Early AccessRacing

Sizing up your own game? See how many copies games in its genre usually sell before you build it.