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How many copies did Fortification: tower defence sell?

Estimated copies sold
≈ 719–1k
$393–$1k after Steam's cut $715–$2k before the cut
from 29 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 Fortification: tower defence out and predicted the genre from its 8 similar games. Every figure here, including Fortification: tower defence's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 99k–469k
best case 1.7M (Stronghold Crusader HD (2012))
Games like Fortification: tower defence

The middle of these games

≈ 99k–469k copies

≈ $573k–$2.0M after Steam's cut

from ~4k 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: Stronghold Crusader HD (2012) at ≈ 1.3M–2.2M copies, ≈ $3.7M–$9.8M after Steam's cut.

What it took to get here
About half the games that made it here had over 1k reviews in their first month; the spread ran 285 to 5k.
The genre you'd be entering
Your set
Your set clusters on Real Time Tactics (8 of 8) and Building (6 of 8).
The winners
Winners here lead with Military + City Builder, priced around $10.
The era
The games you compared span 2013 to 2024, 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 79 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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SteamSpy 50k–100k
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$63k–$168k after Steam's cut $114k–$259k before the cut
$4.99
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Tower DefenseStrategy
Artisan TD
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Infinitode 2 - Infinite Tower Defense
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Tower DefenseWargame
Stronghold HD (2012)
2013
Est. copies
≈ 659k–1.1M
2.3x vs typical
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Real Time TacticsCity Builder
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≈ 80k–130k
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Tower DefenseReal Time Tactics
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Est. copies
≈ 1.3M–2.2M
4.7x vs typical
SteamSpy 1M–2M
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$3.7M–$9.8M after Steam's cut $6.6M–$15.1M before the cut
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MilitaryCity Builder
Stronghold: Definitive Edition
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City BuilderStrategy

Sizing up your own game? See what its genre can realistically do before you build it.