How many copies did Hammerfight sell?

An estimated 107k to 174k copies, based on its 2k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Hammerfight make?

Hammerfight is free to play, so there is no copy-sales revenue to estimate.

How big is Hammerfight?

Estimated owners: ≈ 107k–174k; from 2k reviews (Mostly 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 Hammerfight out and predicted the genre from its 8 similar games. Every figure here, including Hammerfight's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 5.5M–13.0M

best case 85.1M (Garry's Mod)

The Multiplayer lane

A big, proven genre: most sell around 11.8M copies.

A typical game

≈ 11.8M copies

≈ $45.9M after Steam's cut

from ~199k reviews

Best case

≈ 85.1M copies

Garry's Mod · ≈ $328.7M after Steam's cut

from 1.2M reviews

Copies and revenue are rough lifetime estimates from the review count; typical figures are medians per column, so they can come from different games.

The lane you'd be entering

Winners here lead with Sandbox + Moddable, priced around $10.
The games you compared span 2006 to 2021, a lane with a long track record.
A typical game here lands in Diamond ($1M+ before Steam's cut, est.). Tiers: Chris Zukowski's benchmark tiers.

Similar games

Game	Price	Reviews	Tags	Est. copies	Est. revenue
Stick Fight: The Game 2017	Est. copies ≈ 4.3M–7.0M SteamSpy 2M–5M	Est. revenue $5.9M–$15.9M net $10.7M–$24.4M gross	$4.99	125k reviews Very Positive	MultiplayerFunny +6
Garry's Mod 2006	Est. copies ≈ 64.9M–105.4M 6.3x vs typical SteamSpy 20M–50M	Est. revenue $178.2M–$479.2M net $324.0M–$737.2M gross	$9.99	1.2M reviews Overwhelmingly Positive	SandboxModdable +6
Fall Guys 2020	Est. copies ≈ 12.4M–20.1M 2.4x vs typical SteamSpy 20M–50M	Est. revenue Free	Free	469k reviews Very Positive	MultiplayerParty Game +6
People Playground 2019	Est. copies ≈ 9.1M–14.7M 1.6x vs typical SteamSpy 5M–10M	Est. revenue $24.9M–$66.9M net $45.2M–$102.9M gross	$9.99	314k reviews Overwhelmingly Positive	SandboxGore +6
Human Fall Flat 2016	Est. copies ≈ 9.0M–14.6M SteamSpy 10M–20M	Est. revenue $49.5M–$133.2M net $90.1M–$204.9M gross	$19.99	225k reviews Very Positive	Co-opFunny +6
Space Engineers 2019	Est. copies ≈ 3.9M–6.3M SteamSpy 2M–5M	Est. revenue $21.2M–$57.0M net $38.6M–$87.7M gross	$19.99	134k reviews Very Positive	SpaceSandbox +6
Totally Accurate Battle Simulator 2021	Est. copies ≈ 3.8M–6.1M SteamSpy 2M–5M	Est. revenue $20.6M–$55.5M net $37.5M–$85.4M gross	$19.99	151k reviews Overwhelmingly Positive	SandboxSimulation +6
Assetto Corsa 2014	Est. copies ≈ 8.9M–14.5M SteamSpy 5M–10M	Est. revenue $49.1M–$132.0M net $89.3M–$203.1M gross	$19.99	172k reviews Very Positive	RacingAutomobile Sim +6