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How many copies did Zombo Buster Advance sell?

Estimated copies sold
≈ 6k–11k
$9k–$24k after Steam's cut $16k–$37k before the cut
from 245 reviews (Very Positive)

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

Copies, estimated from reviews

typical (middle half) 379k–559k
best case 1.9M (They Are Billions)
The RTS genre

All 8 of your similar games are hits. A healthy genre for a game like yours.

A hit here: 1,000+ reviews, roughly $150k+ before Steam's cut (a standard indie benchmark).

A typical game
≈ 379k–559k copies
≈ $1.9M–$4.1M after Steam's cut
from ~11k reviews
Best case
≈ 1.5M–2.4M copies
They Are Billions · ≈ $12.2M–$32.7M after Steam's cut
A breakout hit, far above a typical game.
The genre you'd be entering
Your set
Your set clusters on RTS (5 of 8) and Tower Defense (5 of 8).
The winners
Winners here lead with Base-Building + Tower Defense, priced around $20. The breakout hits carry Base-Building + Tower Defense + Automation; a typical game here doesn't.
The era
The games you compared span 2013 to 2024, a genre with a long track record.

Copies and revenue are rough lifetime estimates from the review count.

Similar games

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2.4x vs typical
SteamSpy 1M–2M
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$9.99
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Base-BuildingResource Management
Kingdom Rush Frontiers - Tower Defense
2016
Est. copies
≈ 424k–688k
SteamSpy 500k–1M
Est. revenue
$1.2M–$3.1M after Steam's cut $2.1M–$4.8M before the cut
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Tower DefenseStrategy
Starship Troopers: Terran Command
2022
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≈ 286k–465k
SteamSpy 200k–500k
Est. revenue
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$29.99
12k reviews
Very Positive
StrategyRTS
Stronghold: Definitive Edition
2023
Est. copies
≈ 246k–399k
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Est. revenue
$1.0M–$2.7M after Steam's cut $1.8M–$4.2M before the cut
$14.99
10k reviews
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City BuilderStrategy
Bad North: Jotunn Edition
2018
Est. copies
≈ 426k–693k
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$1.8M–$4.7M after Steam's cut $3.2M–$7.3M before the cut
$14.99
14k reviews
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WargameVikings
Diplomacy is Not an Option
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Est. copies
≈ 296k–481k
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$2.4M–$6.6M after Steam's cut $4.4M–$10.1M before the cut
$29.99
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Real-Time with PauseResource Management
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Est. copies
≈ 541k–879k
SteamSpy 200k–500k
Est. revenue
$891k–$2.4M after Steam's cut $1.6M–$3.7M before the cut
$5.99
10k reviews
Overwhelmingly Positive
Real Time TacticsCity Builder
They Are Billions
2019
Est. copies
≈ 1.5M–2.4M
4.5x vs typical
SteamSpy 2M–5M
Est. revenue
$12.2M–$32.7M after Steam's cut $22.1M–$50.3M before the cut
$29.99
51k reviews
Very Positive
Base-BuildingColony Sim

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