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How many copies did Madness inside sell?

Estimated copies sold
≈ 2k–4k
$4k–$12k after Steam's cut $8k–$19k before Steam's cut
from 94 reviews (Mostly Positive)

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

Copies, estimated from reviews

typical (middle half) 774k–1.9M
best case 10.4M (Schedule I)
Games like Madness inside

A typical game among these

≈ 774k–1.9M copies

≈ $6.9M–$16.8M after Steam's cut

from ~26k 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: Schedule I at ≈ 7.9M–12.8M copies, ≈ $43.4M–$116.6M after Steam's cut.

What their first month looked like
About half the games that made it here had over 8k reviews in their first month; the range was 3k to 153k.
The genre you'd be entering
These games
The similar games share First-Person (5 of 8) and Simulation (4 of 8).
The winners
Winners here lead with Simulation + Co-op, priced around $20.
When they shipped
The similar games span 2014 to 2025, and 3 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 70 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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≈ 2.1M–3.4M
3.2x vs typical
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Free to PlayVR
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SimulationIndie
Schedule I
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Est. copies
≈ 7.9M–12.8M
12x vs typical
SteamSpy 10M–20M
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≈ 437k–710k
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Est. copies
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≈ 1.2M–2.0M
1.9x vs typical
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DrivingSurvival
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Post-apocalypticSurvival

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