How many copies did M.A.R.S. sell?

An estimated 29k to 46k copies, based on its 1k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did M.A.R.S. make?

M.A.R.S. is free to play, so there is no copy-sales revenue to estimate.

How big is M.A.R.S.?

Estimated owners: ≈ 29k–46k; from 1k reviews (Mixed)

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 M.A.R.S. out and predicted the genre from its 8 similar games. Every figure here, including M.A.R.S.'s, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 1.1M–3.2M

best case 7.0M (World of Warships)

The Multiplayer lane

A big, proven genre: most sell around 1.4M copies.

A typical game

≈ 1.4M copies

≈ $7.5M after Steam's cut

from ~34k reviews

Best case

≈ 7.0M copies

World of Warships

from 155k 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 Free to Play + Naval Combat, priced around $30.
The games you compared span 2016 to 2024, 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
Alien Swarm: Reactive Drop 2017	Est. copies ≈ 813k–1.3M SteamSpy 200k–500k	Est. revenue Free	Free	24k reviews Very Positive	Twin Stick ShooterPvE +6
Crossout 2017	Est. copies ≈ 2.4M–3.9M 2.0x vs typical SteamSpy 5M–10M	Est. revenue Free	Free	69k reviews Mostly Positive	Third PersonGun Customization +6
World of Warships 2017	Est. copies ≈ 5.3M–8.7M 4.5x vs typical SteamSpy 20M–50M	Est. revenue Free	Free	155k reviews Mostly Positive	Free to PlayNaval Combat +6
Plants vs. Zombies: Battle for Neighborville™ 2020	Est. copies ≈ 493k–801k SteamSpy 1M–2M	Est. revenue $4.1M–$10.9M net $7.4M–$16.8M gross	$29.99	19k reviews Mostly Positive	MultiplayerThird-Person Shooter +6
Tom Clancy’s The Division® 2 2023	Est. copies ≈ 834k–1.4M SteamSpy 1M–2M	Est. revenue $6.9M–$18.5M net $12.5M–$28.5M gross	$29.99	35k reviews Mostly Positive	Looter ShooterOpen World +6
Zero Hour 2024	Est. copies ≈ 797k–1.3M SteamSpy 500k–1M	Est. revenue $2.2M–$5.9M net $4.0M–$9.1M gross	$9.99	33k reviews Mostly Positive	TacticalShooter +6
World of Tanks 2021	Est. copies ≈ 2.5M–4.0M 2.9x vs typical SteamSpy 1M–2M	Est. revenue Free	Free	100k reviews Very Positive	TanksFree to Play +6
Infestation: The New Z 2016	Est. copies ≈ 1.4M–2.2M SteamSpy 5M–10M	Est. revenue Free	Free	34k reviews Mixed	ZombiesFree to Play +6