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How many copies did SpaceBourne 2 sell?

Estimated copies sold
≈ 128k–208k
$704k–$1.9M after Steam's cut $1.3M–$2.9M before Steam's cut
from 5k 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 SpaceBourne 2 and predicted how it would do from its 8 similar games. Every figure here, including SpaceBourne 2's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 178k–508k
best case 491k (Osiris: New Dawn)
Games like SpaceBourne 2

A typical game among these

≈ 178k–508k copies

≈ $1.4M–$6.4M after Steam's cut

from ~10k 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: Osiris: New Dawn at ≈ 374k–608k copies.

What their first month looked like
About half the games that made it here had over 7k reviews in their first month; the range was 2k to 14k.
The genre you'd be entering
These games
The similar games share Open World (5 of 8) and Sci-fi (4 of 8).
The winners
Winners here lead with Open World Survival Craft + Horror.
When they shipped
The similar games span 2015 to 2026, and 2 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 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

EVERSPACE™ 2
2023
Est. copies
≈ 326k–529k
SteamSpy 1M–2M
Est. revenue
$4.5M–$12.0M after Steam's cut $8.1M–$18.5M before Steam's cut
$49.99
13k reviews
Very Positive
ShooterSpace
Galactic Civilizations III
2015
Est. copies
≈ 508k–825k
SteamSpy 1M–2M
Est. revenue
$4.2M–$11.3M after Steam's cut $7.6M–$17.3M before Steam's cut
$29.99
10k reviews
Mostly Positive
AliensSci-fi
Osiris: New Dawn
2023
Est. copies
≈ 374k–608k
SteamSpy 500k–1M
Est. revenue
Free
Free
15k reviews
Mixed
Open World Survival CraftHorror
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
PULSAR: Lost Colony
2021
Est. copies
≈ 142k–231k
SteamSpy 500k–1M
Est. revenue
$782k–$2.1M after Steam's cut $1.4M–$3.2M before Steam's cut
$19.99
6k reviews
Very Positive
Space SimOpen World
Naval Action
2019
Est. copies
≈ 428k–695k
SteamSpy 200k–500k
Est. revenue
$2.4M–$6.3M after Steam's cut $4.3M–$9.7M before Steam's cut
$19.99
15k reviews
Mixed
SailingNaval Combat
Starcom: Unknown Space
2024
Est. copies
≈ 112k–181k
SteamSpy 100k–200k
Est. revenue
$767k–$2.1M after Steam's cut $1.4M–$3.2M before Steam's cut
$24.99
5k reviews
Very Positive
SpaceExploration
Star Traders: Frontiers
2018
Est. copies
≈ 116k–189k
SteamSpy 100k–200k
Est. revenue
$478k–$1.3M after Steam's cut $869k–$2.0M before Steam's cut
$14.99
4k reviews
Very Positive
Sci-fiModdable

Sizing up your own game? See how many copies games in its genre usually sell before you build it.