How much revenue did Garry's Mod make?

$178.7M–$480.5M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Garry's Mod sell?

Q: How many copies did Garry's Mod sell?

65.1M to 105.7M copies, based on its 1.3M Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 65.1M–105.7M; $178.7M–$480.5M after Steam's cut $324.9M–$739.2M before the cut; from 1.3M reviews (Overwhelmingly Positive)

A labeled estimate from the public review count (adjusted for release year), not exact sales. Owner data cross-checked with SteamSpy.

Does this actually work?

We left Garry's Mod out and predicted the genre from its 8 similar games. Every figure here, including Garry's Mod's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 22.2M–78.1M

best case 664.3M (Counter-Strike 2)

The Open World genre

All 8 of your similar games are hits. A big, proven genre for a game like yours.

A hit here: 1,000+ reviews, roughly $150k+ before Steam's cut (a standard indie benchmark).

A typical game

≈ 22.2M–78.1M copies

≈ $276.0M–$458.2M after Steam's cut

from ~932k reviews

Best case

≈ 506.1M–822.5M copies

Counter-Strike 2

A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on Open World (4 of 8) and Automobile Sim (3 of 8).
The winners: Winners here lead with FPS + Shooter, priced around $25. The breakout hits carry Competitive + e-sports + Tactical; a typical game here doesn't.
The era: The games you compared span 2007 to 2016, a genre with a long track record.

Copies and revenue are rough lifetime estimates from the review count.

Similar games

Game	Est. copies	Est. revenue	Price	Reviews	Tags
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BeamNG.drive 2015	Est. copies ≈ 18.8M–30.6M SteamSpy 5M–10M	Est. revenue $129.2M–$347.5M after Steam's cut $235.0M–$534.6M before the cut	$24.99	405k reviews Overwhelmingly Positive	SimulationDriving
Sid Meier’s Civilization® VI 2016	Est. copies ≈ 15.1M–24.5M SteamSpy 10M–20M	Est. revenue $248.4M–$667.9M after Steam's cut $451.7M–$1027.6M before the cut	$59.99	376k reviews Very Positive	StrategyTurn-Based Strategy
Left 4 Dead 2 2009	Est. copies ≈ 54.5M–88.5M SteamSpy 50M–100M	Est. revenue $149.6M–$402.3M after Steam's cut $272.1M–$618.9M before the cut	$9.99	1.0M reviews Overwhelmingly Positive	ZombiesCo-op
The Elder Scrolls V: Skyrim Special Edition 2016	Est. copies ≈ 14.8M–24.1M SteamSpy 5M–10M	Est. revenue $163.2M–$438.9M after Steam's cut $296.8M–$675.2M before the cut	$39.99	371k reviews Very Positive	Open WorldRPG
Counter-Strike 2 2012	Est. copies ≈ 506.1M–822.5M 10x vs typical SteamSpy 100M–200M	Est. revenue Free	Free	9.7M reviews Very Positive	FPSShooter
Euro Truck Simulator 2 2012	Est. copies ≈ 48.5M–78.7M SteamSpy 10M–20M	Est. revenue $266.4M–$716.2M after Steam's cut $484.3M–$1101.8M before the cut	$19.99	932k reviews Overwhelmingly Positive	DrivingTransportation
Team Fortress 2 2007	Est. copies ≈ 64.6M–105.0M SteamSpy 50M–100M	Est. revenue Free	Free	1.2M reviews Very Positive	Free to PlayHero Shooter