How much revenue did Don't Knock Twice make?

$137k–$369k 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 725 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 25k–41k; $137k–$369k after Steam's cut $249k–$567k before the cut; from 725 reviews (Mostly 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 Don't Knock Twice out and predicted the genre from its 8 similar games. Every figure here, including Don't Knock Twice's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 2.8M–5.5M

best case 27.3M (Phasmophobia)

Games like Don't Knock Twice

The middle of these games

≈ 2.8M–5.5M copies

≈ $21.5M–$44.0M after Steam's cut

from ~105k 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: Phasmophobia at ≈ 20.8M–33.8M copies, ≈ $114.2M–$307.1M after Steam's cut. A breakout hit, far above a typical game.

What it took to get here

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

The genre you'd be entering

Your set: Your set clusters on 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.
The era: The games you compared span 2017 to 2025, and 1 of your 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 ≈ 9.2M–15.0M 2.6x vs typical SteamSpy 20M–50M	Est. revenue Free	Free	268k reviews Mostly Positive	VRFree to Play
Escape the Backrooms 2025	Est. copies ≈ 4.0M–6.6M 1.5x vs typical SteamSpy 2M–5M	Est. revenue $11.1M–$29.8M after Steam's cut $20.1M–$45.8M before the cut	$9.99	163k reviews Very Positive	HorrorMultiplayer
Resident Evil 7 Biohazard 2017	Est. copies ≈ 4.3M–7.1M SteamSpy 2M–5M	Est. revenue $23.9M–$64.1M after Steam's cut $43.4M–$98.7M before the cut	$19.99	126k reviews Overwhelmingly Positive	Horror Survival Horror
Phasmophobia 2020	Est. copies ≈ 20.8M–33.8M 8.0x vs typical 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
SteamVR unreleased	Est. copies ≈ 2.1M–3.5M SteamSpy 1M–2M	Est. revenue Free	Free	86k reviews Very Positive	VRSoftware
Half-Life: Alyx 2020	Est. copies ≈ 2.6M–4.2M SteamSpy 2M–5M	Est. revenue $43.0M–$115.5M after Steam's cut $78.1M–$177.7M before the cut	$59.99	105k reviews Overwhelmingly Positive	VRFPS
Gorilla Tag 2023	Est. copies ≈ 2.1M–3.4M SteamSpy 1M–2M	Est. revenue $11.7M–$31.4M after Steam's cut $21.2M–$48.2M before the 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 $21.9M–$49.9M before the cut	$19.99	76k reviews Overwhelmingly Positive	VRRhythm