How much revenue did Zombie Marauders make?

Zombie Marauders is free to play, so there is no copy-sales revenue to estimate.

How many copies did Zombie Marauders sell?

Q: How many copies did Zombie Marauders sell?

25 to 40 copies, based on its 1 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 25–40; from 1 reviews (1 user reviews); Thin evidence: 1 review. 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 Zombie Marauders out and predicted the genre from its 8 similar games. Every figure here, including Zombie Marauders's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 882k–1.3M

best case 7.9M (ULTRAKILL)

Games like Zombie Marauders

The middle of these games

≈ 882k–1.3M copies

≈ $4.8M–$5.1M after Steam's cut

from ~16k 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.

Your picks lean toward this genre's biggest survivors; the typical figure reads from its ordinary successes.

Best case: ULTRAKILL at ≈ 6.0M–9.7M copies, ≈ $49.4M–$132.9M after Steam's cut. A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on FPS (8 of 8) and Shooter (6 of 8).
The winners: Winners here lead with FPS, priced around $20. The breakout hits carry Retro + Fast-Paced; a typical game here doesn't.
The era: The games you compared span 2007 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

Game	Est. copies	Est. revenue	Price	Reviews	Tags
Warhammer 40,000: Boltgun 2023	Est. copies ≈ 449k–729k SteamSpy 200k–500k	Est. revenue $2.7M–$7.3M after Steam's cut $4.9M–$11.2M before the cut	$21.99	18k reviews Very Positive	Boomer ShooterFPS
DOOM II 2007	Est. copies ≈ 572k–930k too small to compare SteamSpy 500k–1M	Est. revenue Free	Free	9k reviews Overwhelmingly Positive	ClassicFPS
DUSK 2018	Est. copies ≈ 774k–1.3M 1.6x vs typical SteamSpy 1M–2M	Est. revenue $4.3M–$11.4M after Steam's cut $7.7M–$17.6M before the cut	$19.99	25k reviews Overwhelmingly Positive	Boomer ShooterFPS
DOOM + DOOM II 2007	Est. copies ≈ 1.8M–3.0M 1.8x vs typical SteamSpy 1M–2M	Est. revenue $5.0M–$13.5M after Steam's cut $9.1M–$20.8M before the cut	$9.99	29k reviews Overwhelmingly Positive	FPSClassic
Quake II 2007	Est. copies ≈ 654k–1.1M too small to compare SteamSpy 1M–2M	Est. revenue $1.8M–$4.8M after Steam's cut $3.3M–$7.4M before the cut	$9.99	10k reviews Overwhelmingly Positive	FPSClassic
Quake 2007	Est. copies ≈ 1.0M–1.7M SteamSpy 1M–2M	Est. revenue $2.8M–$7.6M after Steam's cut $5.1M–$11.7M before the cut	$9.99	16k reviews Overwhelmingly Positive	FPSClassic
ULTRAKILL 2020	Est. copies ≈ 6.0M–9.7M 15x vs typical SteamSpy 5M–10M	Est. revenue $49.4M–$132.9M after Steam's cut $89.9M–$204.5M before the cut	$29.99	242k reviews Overwhelmingly Positive	Boomer ShooterFast-Paced
Serious Sam II 2012	Est. copies ≈ 896k–1.5M SteamSpy 1M–2M	Est. revenue $2.5M–$6.6M after Steam's cut $4.5M–$10.2M before the cut	$9.99	14k reviews Very Positive	ActionFPS