How many copies did SCP: Secret Laboratory sell?

8.1M to 13.1M copies, based on its 235k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did SCP: Secret Laboratory make?

SCP: Secret Laboratory is free to play, so there is no copy-sales revenue to estimate.

How big is SCP: Secret Laboratory?

Estimated players who have it: ≈ 8.1M–13.1M; from 235k reviews (Very 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 SCP: Secret Laboratory and predicted how it would do from its 8 similar games. Every figure here, including SCP: Secret Laboratory's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 16.3M–33.3M

best case 88.0M (Left 4 Dead 2)

Games like SCP: Secret Laboratory

A typical game among these

≈ 16.3M–33.3M copies

≈ $168.0M–$345.2M after Steam's cut

from ~597k 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: Left 4 Dead 2 at ≈ 67.0M–108.9M copies, ≈ $184.1M–$495.0M after Steam's cut.

What their first month looked like

About half the games that made it here had over 40k reviews in their first month; the range was 35k to 40k.

The genre you'd be entering

These games: The similar games share Co-op (5 of 8) and Horror (5 of 8).
The winners: Winners here lead with Zombies + Co-op, priced around $10.
When they shipped: The similar games span 2009 to 2023, 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
Deep Rock Galactic 2020	Est. copies ≈ 9.4M–15.3M SteamSpy 5M–10M	Est. revenue $77.8M–$209.2M after Steam's cut $141.5M–$321.9M before Steam's cut	$29.99	380k reviews Overwhelmingly Positive	DwarfCo-op
DayZ 2018	Est. copies ≈ 14.3M–23.2M SteamSpy 10M–20M	Est. revenue $196.4M–$527.9M after Steam's cut $357.0M–$812.2M before Steam's cut	$49.99	470k reviews Mostly Positive	SurvivalOpen World
Lethal Company 2023	Est. copies ≈ 12.7M–20.6M SteamSpy 10M–20M	Est. revenue $34.8M–$93.6M after Steam's cut $63.3M–$144.0M before Steam's cut	$9.99	511k reviews Overwhelmingly Positive	Online Co-OpHorror
Subnautica 2018	Est. copies ≈ 11.6M–18.8M SteamSpy 5M–10M	Est. revenue $95.5M–$256.7M after Steam's cut $173.6M–$395.0M before Steam's cut	$29.99	381k reviews Overwhelmingly Positive	Open World Survival CraftSurvival
Phasmophobia 2020	Est. copies ≈ 20.9M–33.9M SteamSpy 10M–20M	Est. revenue $114.8M–$308.5M after Steam's cut $208.6M–$474.7M before Steam's cut	$19.99	842k reviews Very Positive	HorrorOnline Co-Op
Dead by Daylight 2016	Est. copies ≈ 39.0M–63.3M 1.6x vs typical SteamSpy 20M–50M	Est. revenue $214.2M–$575.9M after Steam's cut $389.4M–$886.0M before Steam's cut	$19.99	937k reviews Mostly Positive	HorrorMultiplayer
The Forest 2018	Est. copies ≈ 20.8M–33.7M SteamSpy 20M–50M	Est. revenue $114.2M–$306.9M after Steam's cut $207.5M–$472.2M before Steam's cut	$19.99	683k reviews Overwhelmingly Positive	Open World Survival CraftSurvival
Left 4 Dead 2 2009	Est. copies ≈ 67.0M–108.9M 1.8x vs typical SteamSpy 50M–100M	Est. revenue $184.1M–$495.0M after Steam's cut $334.7M–$761.6M before Steam's cut	$9.99	1.1M reviews Overwhelmingly Positive	ZombiesCo-op