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How many copies did Gratuitous Space Battles sell?

Estimated copies sold
≈ 56k–91k
$232k–$623k after Steam's cut $422k–$959k before Steam's cut
from 890 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 Gratuitous Space Battles and predicted how it would do from its 8 similar games. Every figure here, including Gratuitous Space Battles's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 28k–172k
best case 335k (Heat Signature)
Games like Gratuitous Space Battles

A typical game among these

≈ 28k–172k copies

≈ $139k–$781k 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: Heat Signature at ≈ 255k–415k copies, ≈ $1.1M–$2.8M after Steam's cut.

What their first month looked like
About half the games that made it here had over 332 reviews in their first month; the range was 242 to 2k.
The genre you'd be entering
These games
The similar games share Top-Down (8 of 8) and Space (4 of 8).
The winners
Winners here lead with Space + Stealth, priced around $15.
When they shipped
The similar games span 2011 to 2025, 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 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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Auto BattlerRogue-lite

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