How much revenue did #KILLALLZOMBIES make?

$36k–$97k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did #KILLALLZOMBIES sell?

Q: How many copies did #KILLALLZOMBIES sell?

13k to 21k copies, based on its 316 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 13k–21k; $36k–$97k after Steam's cut $66k–$149k before Steam's cut; from 316 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 #KILLALLZOMBIES and predicted how it would do from its 8 similar games. Every figure here, including #KILLALLZOMBIES's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 5.7M–6.0M

best case 88.0M (Left 4 Dead 2)

Games like #KILLALLZOMBIES

A typical game among these

≈ 5.7M–6.0M copies

≈ $38.3M–$44.7M after Steam's cut

from ~69k reviews

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

7 of the 8 similar games are hits.

Best case: Left 4 Dead 2 at ≈ 67.0M–108.9M copies, ≈ $184.1M–$495.0M after Steam's cut. It is a breakout hit, far above a typical game.

The genre you'd be entering

These games: The similar games share Co-op (8 of 8) and Zombies (8 of 8).
The winners: Winners here lead with Zombies + Co-op, priced around $10. The breakout hits carry Shooter + FPS + Survival; a typical game here doesn't.
When they shipped: The similar games span 2008 to 2015, 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 61 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
Left 4 Dead 2008	Est. copies ≈ 4.3M–7.0M SteamSpy 5M–10M	Est. revenue $11.9M–$31.9M after Steam's cut $21.5M–$49.0M before Steam's cut	$9.99	68k reviews Overwhelmingly Positive	ZombiesCo-op
Killing Floor 2009	Est. copies ≈ 4.4M–7.1M SteamSpy 2M–5M	Est. revenue $24.0M–$64.4M after Steam's cut $43.6M–$99.1M before Steam's cut	$19.99	69k reviews Overwhelmingly Positive	FPSZombies
Left 4 Dead 2 2009	Est. copies ≈ 67.0M–108.9M 15x vs typical SteamSpy 50M–100M	Est. revenue $184.1M–$495.0M after Steam's cut $334.7M–$761.6M before Steam's cut	$9.99	1.1M reviews Overwhelmingly Positive	ZombiesCo-op
Resident Evil 6 2013	Est. copies ≈ 4.5M–7.4M SteamSpy 2M–5M	Est. revenue $25.0M–$67.2M after Steam's cut $45.4M–$103.3M before Steam's cut	$19.99	72k reviews Mostly Positive	ZombiesAction
Resident Evil 5 2009	Est. copies ≈ 4.3M–7.0M SteamSpy 1M–2M	Est. revenue $23.7M–$63.8M after Steam's cut $43.1M–$98.1M before Steam's cut	$19.99	68k reviews Very Positive	Co-opAction
Guns n Zombies 2014	Est. copies ≈ 55k–89k too small to compare SteamSpy 100k–200k	Est. revenue $120k–$324k after Steam's cut $219k–$498k before Steam's cut	$7.99	978 reviews Mixed	ActionZombies
Over 9000 Zombies! 2015	Est. copies ≈ 74k–121k too small to compare SteamSpy 100k–200k	Est. revenue $61k–$164k after Steam's cut $111k–$253k before Steam's cut	$2.99	2k reviews Very Positive	Action RoguelikeZombies
No More Room in Hell 2013	Est. copies ≈ 4.8M–7.9M SteamSpy 5M–10M	Est. revenue Free	Free	77k reviews Very Positive	Free to PlayZombies