How much revenue did Knock-knock make?

$361k–$971k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Knock-knock sell?

Q: How many copies did Knock-knock sell?

131k to 214k copies, based on its 2k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 131k–214k; $361k–$971k after Steam's cut $656k–$1.5M before Steam's cut; from 2k 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 Knock-knock and predicted how it would do from its 8 similar games. Every figure here, including Knock-knock's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 6k–10k

best case 36k (Iron Meat)

Games like Knock-knock

A typical game among these

≈ 6k–10k copies

≈ $27k–$42k after Steam's cut

from ~235 reviews

Only the top fifth of 2019's Steam releases earned $34k or more before Steam's cut, so plan for that or less.

1 of the 8 similar games is a hit.

Best case: Iron Meat at ≈ 28k–45k copies, ≈ $152k–$409k after Steam's cut.

What their first month looked like

About half the games that made it here had over 85 reviews in their first month; the range was 9 to 497.

Games with under about 100 reviews in month one almost never recover.

The genre you'd be entering

These games: The similar games share 2D Platformer (8 of 8) and Side Scroller (8 of 8).
The winners: Winners here lead with Shoot 'Em Up + Side Scroller, priced around $20.
When they shipped: 4 of the 8 similar games shipped in the last two years, so this genre is actively shipping.

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 of about 31, then widened into a range; revenue rides on that estimate times price. Source: GameDiscoverCo (2020) and VG Insights (2021).

Similar games

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You are Peter Shorts 2024	Est. copies ≈ 5k–8k SteamSpy under 20k	Est. revenue $21k–$58k after Steam's cut $39k–$89k before Steam's cut	$14.99	210 reviews Very Positive	MetroidvaniaBeat 'em up
PARASiTE FLOWER 2024	Est. copies ≈ 6k–10k SteamSpy under 20k	Est. revenue $5k–$14k after Steam's cut $10k–$22k before Steam's cut	$2.99	260 reviews Mostly Positive	RPGJRPG
Angel's Gear 2023	Est. copies ≈ 7k–11k SteamSpy under 20k	Est. revenue $18k–$49k after Steam's cut $33k–$76k before Steam's cut	$9.99	268 reviews Mostly Positive	MetroidvaniaSide Scroller
Alien Scumbags 2020	Est. copies ≈ 3k–5k SteamSpy under 20k	Est. revenue $5k–$13k after Steam's cut $9k–$20k before Steam's cut	$5.99	118 reviews Very Positive	ActionPixel Graphics
Zapling Bygone 2022	Est. copies ≈ 5k–8k SteamSpy under 20k	Est. revenue $22k–$58k after Steam's cut $39k–$89k before Steam's cut	$15.99	198 reviews Very Positive	MetroidvaniaPsychological
Okinawa Rush 2021	Est. copies ≈ 4k–6k SteamSpy 20k–50k	Est. revenue $18k–$48k after Steam's cut $33k–$75k before Steam's cut	$17.99	147 reviews Very Positive	Beat 'em up2D Platformer
Iron Meat 2024	Est. copies ≈ 28k–45k 4.7x vs typical SteamSpy 100k–200k	Est. revenue $152k–$409k after Steam's cut $276k–$629k before Steam's cut	$19.99	1k reviews Overwhelmingly Positive	Shoot 'Em UpSide Scroller
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