How many copies did SCP: Secret Laboratory sell?

8.0M to 13.1M copies, based on its 234k 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 owners: ≈ 8.0M–13.1M; from 234k reviews (Very Positive)

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 SCP: Secret Laboratory out and predicted the genre from its 8 similar games. Every figure here, including SCP: Secret Laboratory's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 16.2M–33.1M

best case 87.5M (Left 4 Dead 2)

Games like SCP: Secret Laboratory

The middle of these games

≈ 16.2M–33.1M copies

≈ $167.2M–$343.7M after Steam's cut

from ~596k 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: Left 4 Dead 2 at ≈ 66.7M–108.4M copies, ≈ $183.2M–$492.6M after Steam's cut.

What it took to get here

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

The genre you'd be entering

Your set: Your set clusters on Co-op (5 of 8) and Horror (5 of 8).
The winners: Winners here lead with Zombies + Co-op, priced around $10.
The era: The games you compared 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 $77.6M–$208.6M after Steam's cut $141.1M–$321.0M before the cut	$29.99	379k reviews Overwhelmingly Positive	DwarfCo-op
DayZ 2018	Est. copies ≈ 14.2M–23.1M SteamSpy 10M–20M	Est. revenue $195.8M–$526.4M after Steam's cut $356.0M–$809.9M before the cut	$49.99	469k reviews Mostly Positive	SurvivalOpen World
Lethal Company 2023	Est. copies ≈ 12.7M–20.6M SteamSpy 10M–20M	Est. revenue $34.8M–$93.5M after Steam's cut $63.2M–$143.9M before the cut	$9.99	511k reviews Overwhelmingly Positive	Online Co-OpHorror
Subnautica 2018	Est. copies ≈ 11.5M–18.7M SteamSpy 5M–10M	Est. revenue $95.0M–$255.4M after Steam's cut $172.7M–$393.0M before the cut	$29.99	379k reviews Overwhelmingly Positive	Open World Survival CraftSurvival
Phasmophobia 2020	Est. copies ≈ 20.8M–33.8M SteamSpy 10M–20M	Est. revenue $114.2M–$307.1M after Steam's cut $207.7M–$472.5M before the cut	$19.99	838k reviews Very Positive	HorrorOnline Co-Op
Dead by Daylight 2016	Est. copies ≈ 38.7M–62.9M 1.6x vs typical SteamSpy 20M–50M	Est. revenue $212.7M–$571.8M after Steam's cut $386.7M–$879.7M before the cut	$19.99	930k reviews Mostly Positive	HorrorMultiplayer
The Forest 2018	Est. copies ≈ 20.7M–33.6M SteamSpy 20M–50M	Est. revenue $113.8M–$305.9M after Steam's cut $206.9M–$470.7M before the cut	$19.99	681k reviews Overwhelmingly Positive	Open World Survival CraftSurvival
Left 4 Dead 2 2009	Est. copies ≈ 66.7M–108.4M 1.8x vs typical SteamSpy 50M–100M	Est. revenue $183.2M–$492.6M after Steam's cut $333.1M–$757.9M before the cut	$9.99	1.1M reviews Overwhelmingly Positive	ZombiesCo-op