How much revenue did GTFO make?

$18.2M–$49.1M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did GTFO sell?

Q: How many copies did GTFO sell?

1.7M to 2.7M copies, based on its 67k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 1.7M–2.7M; $18.2M–$49.1M after Steam's cut $33.2M–$75.5M before Steam's cut; from 67k 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 GTFO and predicted how it would do from its 8 similar games. Every figure here, including GTFO's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 10.6M–12.3M

best case 88.0M (Left 4 Dead 2)

Games like GTFO

A typical game among these

≈ 10.6M–12.3M copies

≈ $127.6M–$202.2M after Steam's cut

from ~279k 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. It is a breakout hit, far above a typical game.

The genre you'd be entering

These games: The similar games share FPS (6 of 8) and Shooter (6 of 8).
The winners: Winners here lead with Zombies + Co-op, priced around $10. The breakout hits carry Zombies + Action + Survival; a typical game here doesn't.
When they shipped: The similar games span 2009 to 2023, 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
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
Ready or Not 2023	Est. copies ≈ 8.6M–14.0M SteamSpy 5M–10M	Est. revenue $118.4M–$318.4M after Steam's cut $215.3M–$489.8M before Steam's cut	$49.99	347k reviews Mostly Positive	TacticalRealistic
Left 4 Dead 2 2009	Est. copies ≈ 67.0M–108.9M 3.8x 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
DOOM 2016	Est. copies ≈ 9.2M–15.0M SteamSpy 5M–10M	Est. revenue $50.7M–$136.4M after Steam's cut $92.3M–$209.9M before Steam's cut	$19.99	222k reviews Overwhelmingly Positive	FPSGore
Deep Rock Galactic 2020	Est. copies ≈ 9.4M–15.3M SteamSpy 5M–10M	Est. revenue $77.8M–$209.2M after Steam's cut $141.5M–$321.9M before Steam's cut	$29.99	380k reviews Overwhelmingly Positive	DwarfCo-op
SCP: Secret Laboratory 2017	Est. copies ≈ 8.1M–13.1M SteamSpy 5M–10M	Est. revenue Free	Free	235k reviews Very Positive	Free to PlayMultiplayer
DayZ 2018	Est. copies ≈ 14.3M–23.2M 1.7x vs typical 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
Halo: The Master Chief Collection 2019	Est. copies ≈ 7.6M–12.3M SteamSpy 5M–10M	Est. revenue $83.3M–$223.9M after Steam's cut $151.4M–$344.5M before Steam's cut	$39.99	263k reviews Very Positive	Great SoundtrackFPS