How much revenue did Don't Knock Twice make?

$138k–$371k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Don't Knock Twice sell?

Q: How many copies did Don't Knock Twice sell?

25k to 41k copies, based on its 730 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 25k–41k; $138k–$371k after Steam's cut $251k–$571k before Steam's cut; from 730 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 Don't Knock Twice and predicted how it would do from its 8 similar games. Every figure here, including Don't Knock Twice's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 2.9M–5.6M

best case 27.4M (Phasmophobia)

Games like Don't Knock Twice

A typical game among these

≈ 2.9M–5.6M copies

≈ $21.7M–$44.5M after Steam's cut

from ~106k 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: Phasmophobia at ≈ 20.9M–33.9M copies, ≈ $114.8M–$308.5M after Steam's cut. It is a breakout hit, far above a typical game.

What their first month looked like

About half the games that made it here had over 33k reviews in their first month; the range was 22k to 114k.

The genre you'd be entering

These games: The similar games share First-Person (7 of 8) and VR (7 of 8).
The winners: Winners here lead with Horror + Psychological Horror, priced around $20. The breakout hits carry Supernatural + Online Co-Op + Co-op; a typical game here doesn't.
When they shipped: The similar games span 2017 to 2025, and 1 of the 7 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 43 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
VRChat 2017	Est. copies ≈ 9.3M–15.1M 2.6x vs typical SteamSpy 20M–50M	Est. revenue Free	Free	269k reviews Mostly Positive	VRFree to Play
Escape the Backrooms 2025	Est. copies ≈ 4.1M–6.7M 1.6x vs typical SteamSpy 2M–5M	Est. revenue $11.4M–$30.6M after Steam's cut $20.7M–$47.1M before Steam's cut	$9.99	167k reviews Very Positive	HorrorMultiplayer
Resident Evil 7 Biohazard 2017	Est. copies ≈ 4.4M–7.1M SteamSpy 2M–5M	Est. revenue $24.1M–$64.9M after Steam's cut $43.9M–$99.9M before Steam's cut	$19.99	128k reviews Overwhelmingly Positive	Horror Survival Horror
Phasmophobia 2020	Est. copies ≈ 20.9M–33.9M 8.0x vs typical 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
SteamVR unreleased	Est. copies ≈ 2.2M–3.5M SteamSpy 1M–2M	Est. revenue Free	Free	87k reviews Very Positive	VRSoftware
Half-Life: Alyx 2020	Est. copies ≈ 2.6M–4.3M SteamSpy 2M–5M	Est. revenue $43.2M–$116.1M after Steam's cut $78.5M–$178.5M before Steam's cut	$59.99	106k reviews Overwhelmingly Positive	VRFPS
Gorilla Tag 2023	Est. copies ≈ 2.1M–3.5M SteamSpy 1M–2M	Est. revenue $11.7M–$31.6M after Steam's cut $21.4M–$48.6M before Steam's cut	$19.99	86k reviews Very Positive	VRPsychological Horror
Beat Saber 2019	Est. copies ≈ 2.2M–3.6M SteamSpy 2M–5M	Est. revenue $12.1M–$32.5M after Steam's cut $22.0M–$50.0M before Steam's cut	$19.99	76k reviews Overwhelmingly Positive	VRRhythm