How much revenue did Galactic Civilizations III make?

$4.2M–$11.3M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Galactic Civilizations III sell?

Q: How many copies did Galactic Civilizations III sell?

508k to 825k copies, based on its 10k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 508k–825k; $4.2M–$11.3M after Steam's cut $7.6M–$17.3M before Steam's cut; from 10k reviews (Mostly 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 Galactic Civilizations III and predicted how it would do from its 8 similar games. Every figure here, including Galactic Civilizations III's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 83k–937k

best case 1.7M (Sid Meier's Civilization®: Beyond Earth™)

Games like Galactic Civilizations III

A typical game among these

≈ 83k–937k copies

≈ $1.2M–$6.4M after Steam's cut

from ~8k 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: Sid Meier's Civilization®: Beyond Earth™ at ≈ 1.3M–2.1M copies, ≈ $14.3M–$38.4M after Steam's cut.

What their first month looked like

About half the games that made it here had over 752 reviews in their first month; the range was 289 to 8k.

The genre you'd be entering

These games: The similar games share 4X (6 of 8) and Sci-fi (6 of 8).
The winners: Winners here lead with Turn-Based Strategy + Sci-fi, priced around $40.
When they shipped: The similar games span 2012 to 2026, and 1 of the 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
Age of Wonders: Planetfall 2019	Est. copies ≈ 193k–313k SteamSpy 200k–500k	Est. revenue $1.6M–$4.3M after Steam's cut $2.9M–$6.6M before Steam's cut	$29.99	7k reviews Mostly Positive	StrategyTurn-Based Strategy
Sid Meier's Civilization®: Beyond Earth™ 2014	Est. copies ≈ 1.3M–2.1M 2.8x vs typical SteamSpy 1M–2M	Est. revenue $14.3M–$38.4M after Steam's cut $26.0M–$59.0M before Steam's cut	$39.99	23k reviews Mixed	StrategyTurn-Based Strategy
Sins of a Solar Empire®: Rebellion 2012	Est. copies ≈ 1.0M–1.7M 2.0x vs typical SteamSpy 2M–5M	Est. revenue $5.7M–$15.3M after Steam's cut $10.3M–$23.5M before Steam's cut	$19.99	16k reviews Very Positive	ManagementDiplomacy
ENDLESS Space™ - Definitive Edition 2012	Est. copies ≈ 607k–987k SteamSpy 1M–2M	Est. revenue $1.7M–$4.5M after Steam's cut $3.0M–$6.9M before Steam's cut	$9.99	10k reviews Very Positive	Strategy4X
Slipways 2021	Est. copies ≈ 57k–93k SteamSpy 200k–500k	Est. revenue $268k–$720k after Steam's cut $487k–$1.1M before Steam's cut	$16.99	2k reviews Very Positive	StrategyPuzzle
Terra Invicta 2026	Est. copies ≈ 247k–401k SteamSpy 200k–500k	Est. revenue $2.7M–$7.3M after Steam's cut $4.9M–$11.2M before Steam's cut	$39.99	10k reviews Very Positive	StrategySimulation
Galactic Civilizations IV 2023	Est. copies ≈ 65k–105k SteamSpy 200k–500k	Est. revenue $714k–$1.9M after Steam's cut $1.3M–$3.0M before Steam's cut	$39.99	3k reviews Mostly Positive	SpaceGrand Strategy
Shadow Empire 2020	Est. copies ≈ 49k–79k SteamSpy 20k–50k	Est. revenue $534k–$1.4M after Steam's cut $971k–$2.2M before Steam's cut	$39.99	2k reviews Very Positive	StrategySimulation