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How many copies did Space Pirates And Zombies 2 sell?

Estimated copies sold
≈ 98k–159k
$537k–$1.4M after Steam's cut $976k–$2.2M before Steam's cut
from 3k 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 Space Pirates And Zombies 2 and predicted how it would do from its 8 similar games. Every figure here, including Space Pirates And Zombies 2's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 4.9M–7.7M
best case 38.8M (Portal 2)
Games like Space Pirates And Zombies 2

A typical game among these

≈ 4.9M–7.7M copies

≈ $33.5M–$93.7M after Steam's cut

from ~91k 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: Portal 2 at ≈ 29.5M–48.0M copies, ≈ $81.1M–$218.1M after Steam's cut.

The genre you'd be entering
These games
The similar games share Space (5 of 8) and Open World (4 of 8).
The winners
Winners here lead with Platformer + Puzzle, priced around $10.
When they shipped
The similar games span 2008 to 2019, 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 36 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

Portal 2
2011
Est. copies
≈ 29.5M–48.0M
5.1x vs typical
SteamSpy 5M–10M
Est. revenue
$81.1M–$218.1M after Steam's cut $147.5M–$335.6M before Steam's cut
$9.99
467k reviews
Overwhelmingly Positive
STAR WARS™ Empire at War - Gold Pack
2010
Est. copies
≈ 2.7M–4.4M
SteamSpy 1M–2M
Est. revenue
$15.0M–$40.4M after Steam's cut $27.3M–$62.2M before Steam's cut
$19.99
43k reviews
Overwhelmingly Positive
StrategyRTS
Elite Dangerous
2015
Est. copies
≈ 5.3M–8.5M
SteamSpy 2M–5M
Est. revenue
$28.9M–$77.8M after Steam's cut $52.6M–$119.6M before Steam's cut
$19.99
108k reviews
Mostly Positive
Space SimSpace
STAR WARS™ Battlefront II (Classic, 2005)
2009
Est. copies
≈ 3.4M–5.6M
SteamSpy 2M–5M
Est. revenue
$9.4M–$25.4M after Steam's cut $17.1M–$39.0M before Steam's cut
$9.99
54k reviews
Very Positive
ActionMultiplayer
SPORE™
2008
Est. copies
≈ 4.6M–7.5M
SteamSpy 2M–5M
Est. revenue
$25.3M–$68.0M after Steam's cut $46.0M–$104.7M before Steam's cut
$19.99
73k reviews
Very Positive
God GameOpen World
RimWorld
2018
Est. copies
≈ 7.6M–12.3M
2.7x vs typical
SteamSpy 5M–10M
Est. revenue
$72.7M–$195.4M after Steam's cut $132.2M–$300.7M before Steam's cut
$34.99
249k reviews
Overwhelmingly Positive
Colony SimBase-Building
Space Engineers
2019
Est. copies
≈ 3.9M–6.3M
SteamSpy 2M–5M
Est. revenue
$21.3M–$57.3M after Steam's cut $38.7M–$88.1M before Steam's cut
$19.99
135k reviews
Very Positive
SpaceSandbox
PlanetSide 2
2012
Est. copies
≈ 4.7M–7.7M
SteamSpy 5M–10M
Est. revenue
Free
Free
75k reviews
Very Positive
Free to PlayFPS

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