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How many copies did Penetrator sell?

Estimated copies sold
≈ 74–121
$41–$110 after Steam's cut $74–$169 before the cut
from 3 reviews (3 user reviews)
Thin evidence: 3 reviews. That range swings on one or two people, so read it as a hint, not a measurement.

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

Copies, estimated from reviews

typical (middle half) 1.3M–2.8M
best case 10.0M (Cuphead)
Games like Penetrator

The middle of these games

≈ 1.3M–2.8M copies

≈ $8.9M–$19.1M after Steam's cut

from ~34k 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: Cuphead at ≈ 7.6M–12.3M copies, ≈ $41.7M–$112.1M after Steam's cut. A breakout hit, far above a typical game.

The genre you'd be entering
Your set
Your set clusters on Platformer (6 of 8) and 2D Platformer (3 of 8).
The winners
Winners here lead with Platformer, priced around $20. The breakout hits carry Difficult + Great Soundtrack + Cartoon; a typical game here doesn't.
The era
The games you compared span 2010 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

Broforce
2015
Est. copies
≈ 3.0M–4.8M
1.8x vs typical
SteamSpy 2M–5M
Est. revenue
$12.3M–$33.0M after Steam's cut $22.3M–$50.7M before the cut
$14.99
61k reviews
Overwhelmingly Positive
AmericaAction
Sonic Mania
2017
Est. copies
≈ 991k–1.6M
SteamSpy 1M–2M
Est. revenue
$5.5M–$14.7M after Steam's cut $9.9M–$22.5M before the cut
$19.99
29k reviews
Very Positive
Great Soundtrack2D
Streets of Rage 4
2020
Est. copies
≈ 487k–792k
SteamSpy 500k–1M
Est. revenue
$3.3M–$9.0M after Steam's cut $6.1M–$13.9M before the cut
$24.99
20k reviews
Very Positive
ActionBeat 'em up
Shovel Knight: Treasure Trove
2014
Est. copies
≈ 946k–1.5M
SteamSpy 500k–1M
Est. revenue
$10.4M–$28.0M after Steam's cut $18.9M–$43.0M before the cut
$39.99
17k reviews
Overwhelmingly Positive
PlatformerPixel Graphics
Cuphead
2017
Est. copies
≈ 7.6M–12.3M
6.5x vs typical
SteamSpy 5M–10M
Est. revenue
$41.7M–$112.1M after Steam's cut $75.8M–$172.5M before the cut
$19.99
220k reviews
Overwhelmingly Positive
DifficultCartoon
Super Meat Boy
2010
Est. copies
≈ 2.5M–4.0M
SteamSpy 2M–5M
Est. revenue
$10.2M–$27.4M after Steam's cut $18.5M–$42.1M before the cut
$14.99
39k reviews
Very Positive
SANABI
2023
Est. copies
≈ 1.1M–1.8M
SteamSpy 500k–1M
Est. revenue
$4.6M–$12.3M after Steam's cut $8.3M–$19.0M before the cut
$14.99
45k reviews
Overwhelmingly Positive
Pixel GraphicsStory Rich
Celeste
2018
Est. copies
≈ 4.4M–7.2M
4.3x vs typical
SteamSpy 2M–5M
Est. revenue
$24.5M–$65.8M after Steam's cut $44.5M–$101.2M before the cut
$19.99
146k reviews
Overwhelmingly Positive

Sizing up your own game? See what its genre can realistically do before you build it.