How much revenue did Killing Floor 2 make?

$44.4M–$119.4M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Killing Floor 2 sell?

Q: How many copies did Killing Floor 2 sell?

5.4M to 8.8M copies, based on its 129k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 5.4M–8.8M; $44.4M–$119.4M after Steam's cut $80.8M–$183.7M before Steam's cut; from 129k reviews (Very 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 Killing Floor 2 and predicted how it would do from its 8 similar games. Every figure here, including Killing Floor 2'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 Killing Floor 2

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 Survival (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

Game	Est. copies	Est. revenue	Price	Reviews	Tags
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
Z1 Battle Royale 2018	Est. copies ≈ 6.2M–10.0M SteamSpy 10M–20M	Est. revenue Free	Free	202k reviews Mixed	SurvivalMassively Multiplayer
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
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
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
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
Warhammer 40,000: Darktide 2022	Est. copies ≈ 3.5M–5.6M SteamSpy 2M–5M	Est. revenue $38.0M–$102.2M after Steam's cut $69.1M–$157.2M before Steam's cut	$39.99	139k reviews Mostly Positive	HorrorTeam-Based