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How many copies did Atom Zombie Smasher sell?

Estimated copies sold
≈ 133k–216k
$365k–$981k after Steam's cut $664k–$1.5M before the cut
from 2k 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 Atom Zombie Smasher out and predicted the genre from its 8 similar games. Every figure here, including Atom Zombie Smasher's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 82k–119k
best case 12.9M (Plants vs. Zombies GOTY Edition)
Games like Atom Zombie Smasher

The middle of these games

≈ 82k–119k copies

≈ $254k–$555k after Steam's cut

from ~3k reviews

Only the top fifth of 2019’s Steam releases earned about $34k gross, so plan for that or less.

7 of your 8 similar games are hits.

Best case: Plants vs. Zombies GOTY Edition at ≈ 9.8M–16.0M copies, ≈ $13.5M–$36.2M after Steam's cut. A breakout hit, far above a typical game.

What it took to get here
About half the games that made it here had over 320 reviews in their first month; the spread ran 36 to 2k.
The genre you'd be entering
Your set
Your set clusters on Tower Defense (8 of 8) and Zombies (5 of 8).
The winners
Winners here lead with Tower Defense + Zombies, priced around $17. The breakout hits carry Zombies + Singleplayer + Classic; a typical game here doesn't.
The era
The games you compared span 2009 to 2024, and 2 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

Plants vs. Zombies GOTY Edition
2009
Est. copies
≈ 9.8M–16.0M
62x vs typical
SteamSpy 2M–5M
Est. revenue
$13.5M–$36.2M after Steam's cut $24.5M–$55.8M before the cut
$4.99
155k reviews
Overwhelmingly Positive
Tower DefenseZombies
Artisan TD
2024
Est. copies
≈ 62k–101k
SteamSpy 200k–500k
Est. revenue
$291k–$782k after Steam's cut $529k–$1.2M before the cut
$16.99
3k reviews
Very Positive
Tower DefenseStrategy
They Are Billions
2019
Est. copies
≈ 1.5M–2.4M
20x 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
Zombie Defense
2016
Est. copies
≈ 90k–147k
SteamSpy 500k–1M
Est. revenue
Free
Free
2k reviews
Very Positive
Free to PlayZombies
Minimalist Tower Defense
2024
Est. copies
≈ 46k–74k
SteamSpy 50k–100k
Est. revenue
$63k–$168k after Steam's cut $114k–$259k before the cut
$4.99
2k reviews
Very Positive
Tower DefenseStrategy
Zombo Buster Advance
2020
Est. copies
≈ 6k–10k
too small to compare
SteamSpy under 20k
Est. revenue
$8k–$23k after Steam's cut $15k–$35k before the cut
$4.99
248 reviews
Very Positive
StrategyIndie
Ultimate Zombie Defense
2020
Est. copies
≈ 119k–193k
1.9x vs typical
SteamSpy 200k–500k
Est. revenue
$163k–$438k after Steam's cut $296k–$673k before the cut
$4.99
5k reviews
Very Positive
ActionCasual
Element TD 2 - Tower Defense
2021
Est. copies
≈ 80k–130k
SteamSpy 200k–500k
Est. revenue
$330k–$888k after Steam's cut $601k–$1.4M before the cut
$14.99
3k reviews
Very Positive
Tower DefenseReal Time Tactics

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