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How many copies did Back 4 Blood sell?

Estimated copies sold
≈ 1.8M–3.0M
$30.0M–$80.8M after Steam's cut $54.6M–$124.2M before Steam's cut
from 73k 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 Back 4 Blood and predicted how it would do from its 8 similar games. Every figure here, including Back 4 Blood's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 8.9M–22.0M
best case 88.0M (Left 4 Dead 2)
Games like Back 4 Blood

A typical game among these

≈ 8.9M–22.0M copies

≈ $148.5M–$331.4M after Steam's cut

from ~340k 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: Left 4 Dead 2 at ≈ 67.0M–108.9M copies, ≈ $184.1M–$495.0M after Steam's cut.

The genre you'd be entering
These games
The similar games share Open World (6 of 8) and FPS (5 of 8).
The winners
Winners here lead with Zombies + Co-op, priced around $10.
When they shipped
The similar games span 2009 to 2024, and 1 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 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

DayZ
2018
Est. copies
≈ 14.3M–23.2M
SteamSpy 10M–20M
Est. revenue
$196.4M–$527.9M after Steam's cut $357.0M–$812.2M before Steam's cut
$49.99
470k reviews
Mostly Positive
SurvivalOpen World
Left 4 Dead 2
2009
Est. copies
≈ 67.0M–108.9M
3.1x vs typical
SteamSpy 50M–100M
Est. revenue
$184.1M–$495.0M after Steam's cut $334.7M–$761.6M before Steam's cut
$9.99
1.1M reviews
Overwhelmingly Positive
ZombiesCo-op
7 Days to Die
2024
Est. copies
≈ 9.9M–16.2M
SteamSpy 10M–20M
Est. revenue
$123.1M–$331.0M after Steam's cut $223.8M–$509.2M before Steam's cut
$44.99
401k reviews
Very Positive
SurvivalZombies
Dying Light
2015
Est. copies
≈ 24.2M–39.3M
SteamSpy 10M–20M
Est. revenue
$166.4M–$447.4M after Steam's cut $302.5M–$688.3M before Steam's cut
$24.99
496k reviews
Overwhelmingly Positive
ZombiesSurvival Horror
theHunter: Call of the Wild™
2017
Est. copies
≈ 7.0M–11.4M
SteamSpy 5M–10M
Est. revenue
Free
Free
203k reviews
Very Positive
HuntingOpen World
Killing Floor 2
2016
Est. copies
≈ 5.4M–8.8M
SteamSpy 2M–5M
Est. revenue
$44.4M–$119.4M after Steam's cut $80.8M–$183.7M before Steam's cut
$29.99
129k reviews
Very Positive
ZombiesMultiplayer
Hunt: Showdown 1896
2019
Est. copies
≈ 8.0M–13.1M
SteamSpy 10M–20M
Est. revenue
$66.3M–$178.3M after Steam's cut $120.6M–$274.4M before Steam's cut
$29.99
279k reviews
Mostly Positive
Open WorldExtraction Shooter
Z1 Battle Royale
2018
Est. copies
≈ 6.2M–10.0M
SteamSpy 10M–20M
Est. revenue
Free
Free
202k reviews
Mixed
SurvivalMassively Multiplayer

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