How many copies did Zombie Builder Defense sell?

16k to 25k copies, based on its 511 Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Zombie Builder Defense make?

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

How big is Zombie Builder Defense?

Estimated owners: ≈ 16k–25k; from 511 reviews (Mixed)

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

Copies, estimated from reviews

typical (middle half) 571k–842k

best case 13.0M (7 Days to Die)

Games like Zombie Builder Defense

The middle of these games

≈ 571k–842k copies

≈ $3.2M–$4.6M after Steam's cut

from ~13k 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: 7 Days to Die at ≈ 9.9M–16.1M copies, ≈ $122.7M–$330.0M after Steam's cut. A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on Survival (8 of 8) and Base-Building (7 of 8).
The winners: Winners here lead with Base-Building + Zombies, priced around $30.
The era: The games you compared span 2013 to 2024, and 1 of your 8 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
Colony Survival 2017	Est. copies ≈ 309k–502k SteamSpy 200k–500k	Est. revenue $2.1M–$5.7M after Steam's cut $3.9M–$8.8M before the cut	$24.95	9k reviews Very Positive	Colony Sim Survival
They Are Billions 2019	Est. copies ≈ 1.5M–2.4M 3.9x vs typical SteamSpy 2M–5M	Est. revenue $12.2M–$32.8M after Steam's cut $22.2M–$50.5M before the cut	$29.99	51k reviews Very Positive	Base-BuildingColony Sim
How to Survive 2 2016	Est. copies ≈ 458k–745k SteamSpy 500k–1M	Est. revenue $1.9M–$5.1M after Steam's cut $3.4M–$7.8M before the cut	$14.99	11k reviews Mixed	SurvivalZombies
State of Decay 2: Juggernaut Edition 2020	Est. copies ≈ 1.7M–2.8M 5.3x vs typical SteamSpy 2M–5M	Est. revenue $14.3M–$38.3M after Steam's cut $25.9M–$58.9M before the cut	$29.99	70k reviews Very Positive	SurvivalOpen World
State of Decay: YOSE 2015	Est. copies ≈ 641k–1.0M SteamSpy 1M–2M	Est. revenue $3.5M–$9.5M after Steam's cut $6.4M–$14.6M before the cut	$19.99	13k reviews Very Positive	ZombiesSurvival
State of Decay 2013	Est. copies ≈ 1.1M–1.8M SteamSpy 500k–1M	Est. revenue Free	Free	17k reviews Very Positive	ZombiesSurvival
Mist Survival 2018	Est. copies ≈ 435k–708k SteamSpy 500k–1M	Est. revenue $1.3M–$3.5M after Steam's cut $2.4M–$5.4M before the cut	$10.99	14k reviews Mostly Positive	SurvivalZombies
7 Days to Die 2024	Est. copies ≈ 9.9M–16.1M 30x vs typical SteamSpy 10M–20M	Est. revenue $122.7M–$330.0M after Steam's cut $223.1M–$507.7M before the cut	$44.99	400k reviews Very Positive	SurvivalZombies