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How many copies did Supreme Commander 2 sell?

Estimated copies sold
≈ 819k–1.3M
$2.9M–$7.9M after Steam's cut $5.3M–$12.1M before the cut
from 13k 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 Supreme Commander 2 out and predicted the genre from its 8 similar games. Every figure here, including Supreme Commander 2's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 1.1M–1.5M
best case 10.8M (Stellaris)
Games like Supreme Commander 2

The middle of these games

≈ 1.1M–1.5M copies

≈ $15.1M–$21.8M after Steam's cut

from ~29k reviews

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

All 8 of your similar games are hits.

Best case: Stellaris at ≈ 8.2M–13.3M copies, ≈ $112.6M–$302.8M after Steam's cut. A breakout hit, far above a typical game.

The genre you'd be entering
Your set
Your set clusters on Space (6 of 8) and Sci-fi (5 of 8).
The winners
Winners here lead with Space + Simulation, priced around $20. The breakout hits carry Exploration + Sandbox + Open World; a typical game here doesn't.
The era
The games you compared span 2008 to 2023, 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

STAR WARS™ Empire at War - Gold Pack
2010
Est. copies
≈ 2.7M–4.4M
SteamSpy 1M–2M
Est. revenue
$15.0M–$40.2M after Steam's cut $27.2M–$61.9M before the cut
$19.99
43k reviews
Overwhelmingly Positive
StrategyRTS
Stellaris
2016
Est. copies
≈ 8.2M–13.3M
6.9x vs typical
SteamSpy 2M–5M
Est. revenue
$112.6M–$302.8M after Steam's cut $204.7M–$465.8M before the cut
$49.99
197k reviews
Very Positive
SPORE™
2008
Est. copies
≈ 4.6M–7.5M
2.5x vs typical
SteamSpy 2M–5M
Est. revenue
$25.2M–$67.8M after Steam's cut $45.8M–$104.3M before the cut
$19.99
73k reviews
Very Positive
God GameOpen World
Against the Storm
2023
Est. copies
≈ 926k–1.5M
SteamSpy 500k–1M
Est. revenue
$7.6M–$20.5M after Steam's cut $13.9M–$31.6M before the cut
$29.99
37k reviews
Very Positive
StrategyCity Builder
Surviving Mars
2018
Est. copies
≈ 873k–1.4M
SteamSpy 2M–5M
Est. revenue
Free
Free
29k reviews
Mostly Positive
Dyson Sphere Program
2021
Est. copies
≈ 2.3M–3.7M
3.2x vs typical
SteamSpy 2M–5M
Est. revenue
$12.5M–$33.6M after Steam's cut $22.7M–$51.6M before the cut
$19.99
92k reviews
Overwhelmingly Positive
AutomationSpace
ENDLESS Space™ 2
2017
Est. copies
≈ 793k–1.3M
SteamSpy 1M–2M
Est. revenue
$8.7M–$23.5M after Steam's cut $15.9M–$36.1M before the cut
$39.99
23k reviews
Very Positive
StrategySpace
Warhammer® 40,000: Dawn of War® - Soulstorm
2008
Est. copies
≈ 1.2M–1.9M
SteamSpy 1M–2M
Est. revenue
Free
Free
18k reviews
Very Positive
Warhammer 40KStrategy

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