How much revenue did Zombotron make?

$431k–$1.2M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Zombotron sell?

Q: How many copies did Zombotron sell?

105k to 170k copies, based on its 4k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 105k–170k; $431k–$1.2M after Steam's cut $784k–$1.8M before Steam's cut; from 4k 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 Zombotron and predicted how it would do from its 8 similar games. Every figure here, including Zombotron's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 3.0M–9.9M

best case 23.2M (Half-Life 2)

Games like Zombotron

A typical game among these

≈ 3.0M–9.9M copies

≈ $36.5M–$89.7M after Steam's cut

from ~106k 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.

Best case: Half-Life 2 at ≈ 17.7M–28.8M copies, ≈ $48.6M–$130.7M after Steam's cut.

The genre you'd be entering

These games: The similar games share First-Person (7 of 8) and FPS (7 of 8).
The winners: Winners here lead with FPS + Sci-fi, priced around $10.
When they shipped: The similar games span 2004 to 2020, 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
Call of Duty®: Black Ops III 2015	Est. copies ≈ 11.4M–18.6M 2.2x vs typical SteamSpy 5M–10M	Est. revenue $188.7M–$507.3M after Steam's cut $343.1M–$780.5M before Steam's cut	$59.99	234k reviews Very Positive	MultiplayerZombies
Half-Life 2 2004	Est. copies ≈ 17.7M–28.8M 2.7x vs typical SteamSpy 10M–20M	Est. revenue $48.6M–$130.7M after Steam's cut $88.4M–$201.1M before Steam's cut	$9.99	280k reviews Overwhelmingly Positive	FPSAction
Black Mesa 2020	Est. copies ≈ 3.6M–5.8M SteamSpy 2M–5M	Est. revenue $19.8M–$53.2M after Steam's cut $35.9M–$81.8M before Steam's cut	$19.99	145k reviews Very Positive	FPSRemake
Half-Life 2: Episode One 2006	Est. copies ≈ 2.0M–3.2M SteamSpy 5M–10M	Est. revenue Free	Free	31k reviews Overwhelmingly Positive	FPSAction
Half-Life 2: Episode Two 2007	Est. copies ≈ 2.6M–4.2M SteamSpy 5M–10M	Est. revenue Free	Free	41k reviews Overwhelmingly Positive	FPSAction
Half-Life: Alyx 2020	Est. copies ≈ 2.6M–4.3M SteamSpy 2M–5M	Est. revenue $43.2M–$116.1M after Steam's cut $78.5M–$178.5M before Steam's cut	$59.99	106k reviews Overwhelmingly Positive	VRFPS
Dead Space (2008) 2009	Est. copies ≈ 1.8M–3.0M SteamSpy 2M–5M	Est. revenue $10.2M–$27.3M after Steam's cut $18.5M–$42.0M before Steam's cut	$19.99	29k reviews Very Positive	HorrorSci-fi
Call of Duty®: Black Ops III 2015	Est. copies ≈ 309k–501k too small to compare SteamSpy under 20k	Est. revenue $5.1M–$13.7M after Steam's cut $9.3M–$21.1M before Steam's cut	$59.99	6k reviews Mostly Negative	MultiplayerFPS