How many copies did Star Sonata 2 sell?

7k to 12k copies, based on its 293 Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Star Sonata 2 make?

Star Sonata 2 is free to play, so there is no copy-sales revenue to estimate.

How big is Star Sonata 2?

Estimated players who have it: ≈ 7k–12k; from 293 reviews (Mixed)

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 Star Sonata 2 and predicted how it would do from its 8 similar games. Every figure here, including Star Sonata 2's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 16k–4.9M

best case 23.0M (No Man's Sky)

Games like Star Sonata 2

A typical game among these

≈ 16k–4.9M copies

≈ $432k–$267.2M after Steam's cut

from ~2k reviews

Only the top fifth of 2019's Steam releases earned $34k or more before Steam's cut, so plan for that or less.

4 of the 8 similar games are hits.

Best case: No Man's Sky at ≈ 17.5M–28.5M copies, ≈ $289.3M–$777.8M after Steam's cut.

What their first month looked like

About half the games that made it here had over 281 reviews in their first month; the range was 10 to 145k.

The genre you'd be entering

These games: The similar games share Open World (6 of 8) and Sandbox (5 of 8).
The winners: Winners here lead with Open World + Open World Survival Craft, priced around $60.
When they shipped: The similar games span 2010 to 2022, 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
EVE Online 2010	Est. copies ≈ 2.5M–4.1M 24x vs typical SteamSpy 2M–5M	Est. revenue Free	Free	40k reviews Mostly Positive	SpaceFree to Play
No Man's Sky 2016	Est. copies ≈ 17.5M–28.5M 252x vs typical SteamSpy 5M–10M	Est. revenue $289.3M–$777.8M after Steam's cut $526.0M–$1196.6M before Steam's cut	$59.99	422k reviews Very Positive	Open WorldOpen World Survival Craft
Dual Universe 2022	Est. copies ≈ 14k–23k SteamSpy 100k–200k	Est. revenue Free	Free	565 reviews Mixed	Massively MultiplayerMMORPG
Astro Lords 2015	Est. copies ≈ 11k–18k SteamSpy 100k–200k	Est. revenue Free	Free	231 reviews Mixed	SpaceMassively Multiplayer
CSC \| Space MMO 2020	Est. copies ≈ 12k–20k SteamSpy 50k–100k	Est. revenue Free	Free	485 reviews Mixed	Massively MultiplayerSpace
Rise - The Vieneo Province 2020	Est. copies ≈ 719–1k SteamSpy under 20k	Est. revenue $4k–$11k after Steam's cut $7k–$16k before Steam's cut	$19.99	29 reviews Mostly Positive	FlightExploration
Boundless 2018	Est. copies ≈ 84k–137k 1.7x vs typical SteamSpy 100k–200k	Est. revenue $464k–$1.2M after Steam's cut $844k–$1.9M before Steam's cut	$19.99	3k reviews Mixed	Open World Survival CraftSandbox
New World: Aeternum 2021	Est. copies ≈ 7.4M–12.0M 178x vs typical SteamSpy 50M–100M	Est. revenue Free	Free	297k reviews Mixed	Open WorldMassively Multiplayer