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How many copies did Starpoint Gemini 2 sell?

Estimated copies sold
≈ 214k–348k
$2.1M–$5.5M after Steam's cut $3.7M–$8.5M before the cut
from 4k reviews (Mixed)

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 Starpoint Gemini 2 out and predicted the genre from its 8 similar games. Every figure here, including Starpoint Gemini 2's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 1.1M–5.6M
best case 9.7M (RimWorld)
The Open World genre

All 8 of your similar games are hits. A big, proven genre for a game like yours.

A hit here: 1,000+ reviews, roughly $150k+ before Steam's cut (a standard indie benchmark).

A typical game
≈ 1.1M–5.6M copies
≈ $8.4M–$47.2M after Steam's cut
from ~56k reviews
Best case
≈ 7.4M–12.0M copies
RimWorld · ≈ $71.1M–$191.2M after Steam's cut
The genre you'd be entering
Your set
Your set clusters on Open World (4 of 8) and Simulation (4 of 8).
The winners
Winners here lead with Colony Sim + Base-Building, priced around $35.
The era
The games you compared span 2008 to 2020, a genre with a long track record.

Copies and revenue are rough lifetime estimates from the review count.

Similar games

Mountain
2014
Est. copies
≈ 847k–1.4M
SteamSpy 500k–1M
Est. revenue
$231k–$620k after Steam's cut $419k–$954k before the cut
$0.99
16k reviews
Very Positive
SimulationIndie
RimWorld
2018
Est. copies
≈ 7.4M–12.0M
4.4x vs typical
SteamSpy 5M–10M
Est. revenue
$71.1M–$191.2M after Steam's cut $129.3M–$294.2M before the cut
$34.99
243k reviews
Overwhelmingly Positive
Colony SimBase-Building
FTL: Faster Than Light
2012
Est. copies
≈ 4.1M–6.6M
SteamSpy 2M–5M
Est. revenue
$11.2M–$30.1M after Steam's cut $20.3M–$46.2M before the cut
$9.99
78k reviews
Overwhelmingly Positive
Rogue-likeSpace
SPORE™
2008
Est. copies
≈ 3.8M–6.1M
SteamSpy 2M–5M
Est. revenue
$20.6M–$55.5M after Steam's cut $37.5M–$85.3M before the cut
$19.99
72k reviews
Very Positive
God GameOpen World
EVE Online
2010
Est. copies
≈ 2.0M–3.3M
SteamSpy 2M–5M
Est. revenue
Free
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39k reviews
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SpaceFree to Play
From the Depths
2020
Est. copies
≈ 337k–547k
SteamSpy 200k–500k
Est. revenue
$2.3M–$6.2M after Steam's cut $4.2M–$9.6M before the cut
$24.99
13k reviews
Very Positive
BuildingNaval Combat
Elite Dangerous
2015
Est. copies
≈ 5.0M–8.1M
1.9x vs typical
SteamSpy 2M–5M
Est. revenue
$27.3M–$73.3M after Steam's cut $49.6M–$112.8M before the cut
$19.99
107k reviews
Mostly Positive
Space SimSpace
Star Conflict
2013
Est. copies
≈ 791k–1.3M
SteamSpy 2M–5M
Est. revenue
Free
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15k reviews
Mostly Positive
Online Co-OpFree to Play

Sizing up your own game? See what its genre can realistically do before you build it.