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 owners: ≈ 26k–42k; from 1k 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 Evil Inside - Prologue out and predicted the genre from its 8 similar games. Every figure here, including Evil Inside - Prologue's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 3.6M–6.2M

best case 10.3M (Metro 2033 Redux)

Games like Evil Inside - Prologue

The middle of these games

≈ 3.6M–6.2M copies

≈ $32.8M–$58.2M after Steam's cut

from ~75k 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: Metro 2033 Redux at ≈ 7.9M–12.8M copies, ≈ $43.3M–$116.4M after Steam's cut.

The genre you'd be entering

Your set: Your set clusters on FPS (8 of 8) and Horror (6 of 8).
The winners: Winners here lead with Post-apocalyptic + FPS, priced around $20.
The era: The games you compared 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 $27.7M–$74.4M after Steam's cut $50.3M–$114.5M before the cut	$29.99	135k reviews Very Positive	Post-apocalypticFPS
Killing Floor 2009	Est. copies ≈ 4.4M–7.1M SteamSpy 2M–5M	Est. revenue $23.9M–$64.3M after Steam's cut $43.5M–$99.0M before the cut	$19.99	69k reviews Overwhelmingly Positive	FPSZombies
Killing Floor 2 2016	Est. copies ≈ 5.4M–8.7M 1.7x vs typical SteamSpy 2M–5M	Est. revenue $44.4M–$119.3M after Steam's cut $80.6M–$183.5M before the 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–$44.9M after Steam's cut $30.4M–$69.1M before the cut	$19.99	48k reviews Very Positive	AtmosphericPost-apocalyptic
GTFO 2021	Est. copies ≈ 1.7M–2.7M SteamSpy 2M–5M	Est. revenue $18.2M–$48.9M after Steam's cut $33.0M–$75.2M before the cut	$39.99	67k reviews Very Positive	Online Co-OpHorror
Metro: Last Light Redux 2014	Est. copies ≈ 4.6M–7.4M SteamSpy 2M–5M	Est. revenue $25.0M–$67.3M after Steam's cut $45.5M–$103.5M before the cut	$19.99	81k reviews Very Positive	Post-apocalypticFPS
Prey 2017	Est. copies ≈ 1.9M–3.0M SteamSpy 1M–2M	Est. revenue $15.4M–$41.5M after Steam's cut $28.1M–$63.9M before the cut	$29.99	54k reviews Very Positive	Sci-fiImmersive Sim
Metro 2033 Redux 2014	Est. copies ≈ 7.9M–12.8M 1.9x vs typical SteamSpy 5M–10M	Est. revenue $43.3M–$116.4M after Steam's cut $78.7M–$179.1M before the cut	$19.99	141k reviews Very Positive	Post-apocalypticFPS