How many copies did StarOS sell?

3k to 5k copies, based on its 116 Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did StarOS make?

StarOS is free to play, so there is no copy-sales revenue to estimate.

How big is StarOS?

Estimated owners: ≈ 3k–5k; from 116 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 StarOS out and predicted the genre from its 8 similar games. Every figure here, including StarOS's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 2k–10k

best case 6.9M (Elite Dangerous)

Games like StarOS

The middle of these games

≈ 2k–10k copies

≈ $2k–$50k after Steam's cut

from ~187 reviews

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

1 of your 8 similar games is a hit.

Best case: Elite Dangerous at ≈ 5.2M–8.5M copies, ≈ $28.8M–$77.4M after Steam's cut. A breakout hit, far above a typical game.

What it took to get here

About half the games that made it here had over 4 reviews in their first month; the spread ran 2 to 14.

Under about 100 in month one, almost nothing recovers.

The genre you'd be entering

Your set: Your set clusters on Simulation (8 of 8) and Space (7 of 8).
The winners: Winners here lead with Space Sim + Space, priced around $20. The breakout hits carry Open World + Massively Multiplayer + Multiplayer; a typical game here doesn't.
The era: The games you compared span 2015 to 2024, and 1 of your 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 61 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
Elite Dangerous 2015	Est. copies ≈ 5.2M–8.5M 574x vs typical SteamSpy 2M–5M	Est. revenue $28.8M–$77.4M after Steam's cut $52.3M–$119.1M before the cut	$19.99	107k reviews Mostly Positive	Space SimSpace
Beam Eye Tracker 2023	Est. copies ≈ 25k–40k 5.3x vs typical SteamSpy under 20k	Est. revenue $204k–$548k after Steam's cut $371k–$843k before the cut	$29.99	997 reviews Very Positive	SimulationUtilities
Star Trek: Starfleet Command Gold Edition 2016	Est. copies ≈ 9k–15k SteamSpy 50k–100k	Est. revenue $49k–$133k after Steam's cut $90k–$204k before the cut	$19.99	216 reviews Mixed	StrategySimulation
Endless Universe 2 PC Live Wallpaper 2019	Est. copies ≈ 1k–2k SteamSpy under 20k	Est. revenue $1k–$3k after Steam's cut $2k–$5k before the cut	$2.99	50 reviews Mixed	UtilitiesDesign & Illustration
3D Earth Time Lapse PC Live Wallpaper 2018	Est. copies ≈ 6k–9k SteamSpy 50k–100k	Est. revenue $5k–$13k after Steam's cut $9k–$20k before the cut	$2.99	189 reviews Mixed	UtilitiesDesign & Illustration
Planet Evolution PC Live Wallpaper 2019	Est. copies ≈ 5k–9k SteamSpy 50k–100k	Est. revenue $4k–$12k after Steam's cut $8k–$18k before the cut	$2.99	187 reviews Mostly Positive	Design & IllustrationUtilities
Solar System Simulator 2024	Est. copies ≈ 570–927 SteamSpy under 20k	Est. revenue $1k–$3k after Steam's cut $2k–$5k before the cut	$7.99	23 reviews Positive	SimulationSpace Sim
Cosmic Journey PC Live Wallpaper 2020	Est. copies ≈ 1k–2k SteamSpy under 20k	Est. revenue $351–$944 after Steam's cut $639–$1k before the cut	$0.99	52 reviews Mostly Positive	Design & IllustrationUtilities