How much revenue did Steam Marines make?

$103k–$276k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Steam Marines sell?

Q: How many copies did Steam Marines sell?

19k to 30k copies, based on its 333 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 19k–30k; $103k–$276k after Steam's cut $186k–$424k before Steam's cut; from 333 reviews (Mixed)

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 Steam Marines and predicted how it would do from its 8 similar games. Every figure here, including Steam Marines's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 253k–491k

best case 896k (Into the Breach)

Games like Steam Marines

A typical game among these

≈ 253k–491k copies

≈ $1.5M–$3.2M after Steam's cut

from ~7k 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: Into the Breach at ≈ 682k–1.1M copies, ≈ $2.8M–$7.6M after Steam's cut.

What their first month looked like

About half the games that made it here had over 6k reviews in their first month; the range was 3k to 8k.

The genre you'd be entering

These games: The similar games share Turn-Based (6 of 8) and Rogue-like (4 of 8).
The winners: Winners here lead with Turn-Based Strategy + Turn-Based Tactics, priced around $15.
When they shipped: The similar games span 2008 to 2026, 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
X-COM: UFO Defense 2008	Est. copies ≈ 253k–411k SteamSpy 1M–2M	Est. revenue $347k–$934k after Steam's cut $632k–$1.4M before Steam's cut	$4.99	4k reviews Overwhelmingly Positive	StrategyClassic
Tales of Maj'Eyal 2013	Est. copies ≈ 471k–766k SteamSpy 50k–100k	Est. revenue $906k–$2.4M after Steam's cut $1.6M–$3.7M before Steam's cut	$6.99	7k reviews Very Positive	Traditional RoguelikeRogue-like
Crown Trick 2020	Est. copies ≈ 134k–217k SteamSpy 500k–1M	Est. revenue $735k–$2.0M after Steam's cut $1.3M–$3.0M before Steam's cut	$19.99	5k reviews Very Positive	Rogue-likeTurn-Based Combat
The Last Spell 2023	Est. copies ≈ 341k–555k 2.0x vs typical SteamSpy 500k–1M	Est. revenue $2.3M–$6.3M after Steam's cut $4.3M–$9.7M before Steam's cut	$24.99	14k reviews Very Positive	StrategySingleplayer
Into the Breach 2018	Est. copies ≈ 682k–1.1M 3.3x vs typical SteamSpy 1M–2M	Est. revenue $2.8M–$7.6M after Steam's cut $5.1M–$11.6M before Steam's cut	$14.99	22k reviews Very Positive	StrategyTurn-Based Strategy
Gordian Quest 2022	Est. copies ≈ 150k–244k SteamSpy 200k–500k	Est. revenue $827k–$2.2M after Steam's cut $1.5M–$3.4M before Steam's cut	$19.99	6k reviews Very Positive	RPGCard Game
Quasimorph 2026	Est. copies ≈ 207k–336k SteamSpy 200k–500k	Est. revenue $1.4M–$3.8M after Steam's cut $2.6M–$5.9M before Steam's cut	$24.99	8k reviews Very Positive	Early AccessExtraction Shooter
Invisible, Inc. 2015	Est. copies ≈ 283k–459k SteamSpy 1M–2M	Est. revenue $1.6M–$4.2M after Steam's cut $2.8M–$6.4M before Steam's cut	$19.99	6k reviews Very Positive	CyberpunkDifficult