How much revenue did Ultimate Zombie Defense make?

$163k–$439k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Ultimate Zombie Defense sell?

Q: How many copies did Ultimate Zombie Defense sell?

119k to 194k copies, based on its 5k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 119k–194k; $163k–$439k after Steam's cut $297k–$676k before Steam's cut; from 5k 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 Ultimate Zombie Defense and predicted how it would do from its 8 similar games. Every figure here, including Ultimate Zombie Defense's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 4.0M–16.1M

best case 40.7M (Wallpaper Engine)

Games like Ultimate Zombie Defense

A typical game among these

≈ 4.0M–16.1M copies

≈ $25.0M–$78.4M after Steam's cut

from ~114k reviews

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

All 8 of the similar games are hits.

No genre covers most of these similar games. The closest is Zombies (4 of 8), so its genre is hard to place.

Of the 416 indie games that passed 1,000 reviews in 2022, 11.8% were novel genre mixes and 88.2% stuck to an established genre. Published indie market research.

Best case: Wallpaper Engine at ≈ 31.0M–50.3M copies, ≈ $42.5M–$114.3M after Steam's cut.

The genre you'd be entering

These games: The similar games share Zombies (4 of 8) and Clicker (2 of 8).
The winners: Winners here lead with Mature + Utilities, priced around $5.
When they shipped: The similar games span 2009 to 2018, 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 38 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
Unturned 2017	Est. copies ≈ 19.4M–31.6M 4.9x vs typical SteamSpy 50M–100M	Est. revenue Free	Free	565k reviews Very Positive	Free to PlaySurvival
Wallpaper Engine 2018	Est. copies ≈ 31.0M–50.3M 8.9x vs typical SteamSpy 20M–50M	Est. revenue $42.5M–$114.3M after Steam's cut $77.3M–$175.9M before Steam's cut	$4.99	1.0M reviews Overwhelmingly Positive	MatureUtilities
AdVenture Capitalist 2015	Est. copies ≈ 2.9M–4.8M SteamSpy 5M–10M	Est. revenue Free	Free	60k reviews Very Positive	ClickerIdler
Plague Inc: Evolved 2016	Est. copies ≈ 2.7M–4.5M SteamSpy 1M–2M	Est. revenue $11.3M–$30.4M after Steam's cut $20.6M–$46.8M before Steam's cut	$14.99	66k reviews Very Positive	StrategySimulation
Plants vs. Zombies GOTY Edition 2009	Est. copies ≈ 9.9M–16.1M SteamSpy 2M–5M	Est. revenue $13.6M–$36.5M after Steam's cut $24.7M–$56.1M before Steam's cut	$4.99	156k reviews Overwhelmingly Positive	Tower DefenseZombies
Clicker Heroes 2015	Est. copies ≈ 3.0M–4.9M SteamSpy 5M–10M	Est. revenue Free	Free	62k reviews Very Positive	ClickerIdler
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
DOOM 2016	Est. copies ≈ 9.2M–15.0M 1.9x vs typical SteamSpy 5M–10M	Est. revenue $50.7M–$136.4M after Steam's cut $92.3M–$209.9M before Steam's cut	$19.99	222k reviews Overwhelmingly Positive	FPSGore