How many copies did BRAIN / OUT sell?

524k to 851k copies, based on its 15k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did BRAIN / OUT make?

BRAIN / OUT is free to play, so there is no copy-sales revenue to estimate.

How big is BRAIN / OUT?

Estimated owners: ≈ 524k–851k; from 15k reviews (Very 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 BRAIN / OUT out and predicted the genre from its 8 similar games. Every figure here, including BRAIN / OUT's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 1.2M–1.6M

best case 5.7M (Stick Fight: The Game)

Games like BRAIN / OUT

The middle of these games

≈ 1.2M–1.6M copies

≈ $5.0M–$6.2M after Steam's cut

from ~32k reviews

Only the top fifth of 2019’s Steam releases earned about $34k gross, so plan for that or less.

All 8 of your similar games are hits.

No genre covers most of your similar games. The closest is Shooter (3 of 8), so the genre you lead with is still undecided.

Of the 416 indie games that passed 1,000 reviews in 2022, 11.8% were novel genre mixes and 88.2% stuck to an established genre. Published indie market research.

Best case: Stick Fight: The Game at ≈ 4.3M–7.0M copies, ≈ $5.9M–$15.9M after Steam's cut. A breakout hit, far above a typical game.

What it took to get here

About half the games that made it here had over 18k reviews in their first month; the spread ran 55 to 18k.

The genre you'd be entering

Your set: Your set clusters on Shooter (3 of 8) and 2D Fighter (1 of 8).
The winners: Winners here lead with Utilities + Audio Production, priced around $5. The breakout hits carry Utilities + Audio Production + Music; a typical game here doesn't.
The era: The games you compared span 2014 to 2021, 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 70 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
Soundpad 2017	Est. copies ≈ 3.6M–5.8M 3.2x vs typical SteamSpy 2M–5M	Est. revenue $4.9M–$13.2M after Steam's cut $8.9M–$20.3M before the cut	$4.99	104k reviews Overwhelmingly Positive	UtilitiesAudio Production
Stick Fight: The Game 2017	Est. copies ≈ 4.3M–7.0M 3.9x vs typical SteamSpy 2M–5M	Est. revenue $5.9M–$15.9M after Steam's cut $10.8M–$24.5M before the cut	$4.99	125k reviews Very Positive	MultiplayerFunny
POLYGON 2020	Est. copies ≈ 917k–1.5M SteamSpy 1M–2M	Est. revenue Free	Free	37k reviews Mostly Positive	Free to PlayFPS
The Plan 2014	Est. copies ≈ 1.3M–2.2M SteamSpy 500k–1M	Est. revenue Free	Free	24k reviews Very Positive	Free to PlayIndie
Super Animal Royale 2021	Est. copies ≈ 1.1M–1.8M SteamSpy 1M–2M	Est. revenue Free	Free	45k reviews Very Positive	Battle RoyaleFree to Play
ShellShock Live 2020	Est. copies ≈ 883k–1.4M SteamSpy 1M–2M	Est. revenue $2.4M–$6.5M after Steam's cut $4.4M–$10.0M before the cut	$9.99	36k reviews Very Positive	TanksMultiplayer
Streets of Rogue 2019	Est. copies ≈ 663k–1.1M SteamSpy 1M–2M	Est. revenue $3.6M–$9.8M after Steam's cut $6.6M–$15.1M before the cut	$19.99	23k reviews Overwhelmingly Positive	Rogue-liteAction Roguelike
Bloons TD Battles 2016	Est. copies ≈ 1.2M–2.0M SteamSpy 1M–2M	Est. revenue Free	Free	29k reviews Very Positive	Free to PlayTower Defense