How many copies did Evil Inside - Prologue sell?

26k to 42k copies, based on its 1k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Evil Inside - Prologue make?

Evil Inside - Prologue is free to play, so there is no copy-sales revenue to estimate.

How big is Evil Inside - Prologue?

Estimated players who have it: ≈ 26k–42k; from 1k 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 Evil Inside - Prologue and predicted how it would do from its 8 similar games. Every figure here, including Evil Inside - Prologue's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 3.6M–6.3M

best case 10.5M (Metro 2033 Redux)

Games like Evil Inside - Prologue

A typical game among these

≈ 3.6M–6.3M copies

≈ $33.0M–$58.8M after Steam's cut

from ~76k 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: Metro 2033 Redux at ≈ 8.0M–12.9M copies, ≈ $43.8M–$117.8M after Steam's cut.

The genre you'd be entering

These games: The similar games share FPS (8 of 8) and Horror (6 of 8).
The winners: Winners here lead with Post-apocalyptic + FPS, priced around $20.
When they shipped: The similar games span 2007 to 2021, and none of them 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).

Similar games

Game	Est. copies	Est. revenue	Price	Reviews	Tags
Metro Exodus 2020	Est. copies ≈ 3.4M–5.5M 1.8x vs typical SteamSpy 2M–5M	Est. revenue $27.9M–$74.9M after Steam's cut $50.7M–$115.3M before Steam's cut	$29.99	136k reviews Very Positive	Post-apocalypticFPS
Killing Floor 2009	Est. copies ≈ 4.4M–7.1M SteamSpy 2M–5M	Est. revenue $24.0M–$64.4M after Steam's cut $43.6M–$99.1M before Steam's cut	$19.99	69k reviews Overwhelmingly Positive	FPSZombies
Killing Floor 2 2016	Est. copies ≈ 5.4M–8.8M 1.7x vs typical SteamSpy 2M–5M	Est. revenue $44.4M–$119.4M after Steam's cut $80.8M–$183.7M before Steam's cut	$29.99	129k reviews Very Positive	ZombiesMultiplayer
S.T.A.L.K.E.R.: Shadow of Chernobyl 2007	Est. copies ≈ 3.0M–4.9M SteamSpy 1M–2M	Est. revenue $16.7M–$45.0M after Steam's cut $30.4M–$69.2M before Steam's cut	$19.99	48k reviews Very Positive	AtmosphericPost-apocalyptic
GTFO 2021	Est. copies ≈ 1.7M–2.7M SteamSpy 2M–5M	Est. revenue $18.2M–$49.1M after Steam's cut $33.2M–$75.5M before Steam's cut	$39.99	67k reviews Very Positive	Online Co-OpHorror
Metro: Last Light Redux 2014	Est. copies ≈ 4.6M–7.5M SteamSpy 2M–5M	Est. revenue $25.3M–$67.9M after Steam's cut $45.9M–$104.5M before Steam's cut	$19.99	82k reviews Very Positive	Post-apocalypticFPS
Prey 2017	Est. copies ≈ 1.9M–3.1M SteamSpy 1M–2M	Est. revenue $15.5M–$41.8M after Steam's cut $28.2M–$64.2M before Steam's cut	$29.99	55k reviews Very Positive	Sci-fiImmersive Sim
Metro 2033 Redux 2014	Est. copies ≈ 8.0M–12.9M 1.9x vs typical SteamSpy 5M–10M	Est. revenue $43.8M–$117.8M after Steam's cut $79.6M–$181.2M before Steam's cut	$19.99	142k reviews Very Positive	Post-apocalypticFPS