How much revenue did X-COM: UFO Defense make?

$346k–$931k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did X-COM: UFO Defense sell?

Q: How many copies did X-COM: UFO Defense sell?

252k to 410k copies, based on its 4k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 252k–410k; $346k–$931k after Steam's cut $629k–$1.4M before the cut; from 4k reviews (Overwhelmingly 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 X-COM: UFO Defense out and predicted the genre from its 8 similar games. Every figure here, including X-COM: UFO Defense's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 22k–83k

best case 244k (Fallout Tactics: Brotherhood of Steel)

Games like X-COM: UFO Defense

The middle of these games

≈ 22k–83k copies

≈ $57k–$170k after Steam's cut

from ~697 reviews

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

2 of your 8 similar games are hits.

Best case: Fallout Tactics: Brotherhood of Steel at ≈ 186k–302k copies, ≈ $511k–$1.4M after Steam's cut.

The genre you'd be entering

Your set: Your set clusters on Sci-fi (7 of 8) and Turn-Based (6 of 8).
The winners: Winners here lead with Post-apocalyptic + Turn-Based, priced around $10.
The era: The games you compared span 2007 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
X-COM: Terror From the Deep 2007	Est. copies ≈ 59k–97k SteamSpy 500k–1M	Est. revenue $82k–$219k after Steam's cut $148k–$337k before the cut	$4.99	940 reviews Very Positive	StrategyTurn-Based
Fallout Tactics: Brotherhood of Steel 2009	Est. copies ≈ 186k–302k 4.2x vs typical SteamSpy 500k–1M	Est. revenue $511k–$1.4M after Steam's cut $929k–$2.1M before the cut	$9.99	3k reviews Mostly Positive	Post-apocalypticRPG
X-COM: Apocalypse 2008	Est. copies ≈ 60k–98k SteamSpy 200k–500k	Est. revenue $83k–$222k after Steam's cut $150k–$342k before the cut	$4.99	954 reviews Very Positive	StrategyTurn-Based
UFO: Aftermath 2014	Est. copies ≈ 19k–31k SteamSpy 200k–500k	Est. revenue $21k–$57k after Steam's cut $38k–$87k before the cut	$3.99	343 reviews Mostly Positive	StrategyTactical
Master of Orion 2 2016	Est. copies ≈ 73k–118k 2.5x vs typical SteamSpy 100k–200k	Est. revenue $120k–$321k after Steam's cut $217k–$494k before the cut	$5.99	2k reviews Overwhelmingly Positive	Strategy4X
Master of Orion 1 2016	Est. copies ≈ 19k–31k SteamSpy 100k–200k	Est. revenue $31k–$83k after Steam's cut $56k–$128k before the cut	$5.99	453 reviews Very Positive	Strategy4X
Pax Nova 2020	Est. copies ≈ 11k–18k SteamSpy under 20k	Est. revenue $77k–$207k after Steam's cut $140k–$319k before the cut	$24.99	452 reviews Mixed	Strategy4X
Chaos Galaxy 2020	Est. copies ≈ 7k–12k SteamSpy 20k–50k	Est. revenue $31k–$83k after Steam's cut $56k–$128k before the cut	$14.99	302 reviews Very Positive	MechsGrand Strategy