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How many copies did SymbioPhobiA sell?

Estimated copies sold
≈ 223–363
$306–$824 after Steam's cut $556–$1k before Steam's cut
from 9 reviews (9 user reviews)
Only 9 reviews so far, so that range swings on one or two people. Read it as a hint, not a measurement.

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

Copies, estimated from reviews

typical (middle half) 1.4M–6.7M
best case 16.6M (Lethal Company)
Games like SymbioPhobiA

A typical game among these

≈ 1.4M–6.7M copies

≈ $9.2M–$59.5M after Steam's cut

from ~68k 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: Lethal Company at ≈ 12.7M–20.6M copies, ≈ $34.8M–$93.6M after Steam's cut.

What their first month looked like
About half the games that made it here had over 21k reviews in their first month; the range was 418 to 178k.
The genre you'd be entering
These games
The similar games share Horror (7 of 8) and Survival Horror (7 of 8).
The winners
Winners here lead with Horror + First-Person, priced around $10.
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 of about 31, then widened into a range; revenue rides on that estimate times price. Source: GameDiscoverCo (2020) and VG Insights (2021).

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2.5x vs typical
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Post-apocalypticSurvival
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≈ 12.7M–20.6M
7.5x vs typical
SteamSpy 10M–20M
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DrivingSurvival

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