How many copies did Mysterious School sell?

47k to 76k copies, based on its 2k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Mysterious School make?

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

How big is Mysterious School?

Estimated owners: ≈ 47k–76k; from 2k reviews (Mostly Negative)

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

Copies, estimated from reviews

typical (middle half) 80k–181k

best case 533k (Detention)

Games like Mysterious School

The middle of these games

≈ 80k–181k copies

≈ $431k–$1.6M after Steam's cut

from ~3k 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.

Best case: Detention at ≈ 406k–660k copies, ≈ $1.3M–$3.6M 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 788 reviews in their first month; the spread ran 505 to 1k.

The genre you'd be entering

Your set: Your set clusters on Female Protagonist (5 of 8) and Psychological Horror (5 of 8).
The winners: Winners here lead with Horror + Psychological Horror, priced around $12. The breakout hits carry Puzzle + Great Soundtrack + Indie; a typical game here doesn't.
The era: The games you compared span 2015 to 2024, and 3 of your 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 61 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
Detention 2017	Est. copies ≈ 406k–660k 3.7x vs typical SteamSpy 500k–1M	Est. revenue $1.3M–$3.6M after Steam's cut $2.4M–$5.5M before the cut	$11.99	12k reviews Overwhelmingly Positive	HorrorIndie
1000xRESIST 2024	Est. copies ≈ 172k–279k 2.2x vs typical SteamSpy 200k–500k	Est. revenue $944k–$2.5M after Steam's cut $1.7M–$3.9M before the cut	$19.99	7k reviews Very Positive	Female ProtagonistThriller
Martha Is Dead 2022	Est. copies ≈ 97k–158k SteamSpy 100k–200k	Est. revenue $800k–$2.2M after Steam's cut $1.5M–$3.3M before the cut	$29.99	4k reviews Mostly Positive	Psychological Horror Story Rich
Alone in the Dark 2024	Est. copies ≈ 121k–196k 1.5x vs typical SteamSpy 100k–200k	Est. revenue $1.3M–$3.6M after Steam's cut $2.4M–$5.5M before the cut	$39.99	5k reviews Mostly Positive	Psychological HorrorLovecraftian
OXENFREE II: Lost Signals 2023	Est. copies ≈ 51k–83k SteamSpy 200k–500k	Est. revenue $282k–$758k after Steam's cut $513k–$1.2M before the cut	$19.99	2k reviews Very Positive	ThrillerSupernatural
Folie Fatale 2024	Est. copies ≈ 66k–108k SteamSpy 50k–100k	Est. revenue $109k–$293k after Steam's cut $198k–$452k before the cut	$5.99	3k reviews Very Positive	Female ProtagonistOtome
The Chrono Jotter 2021	Est. copies ≈ 56k–91k SteamSpy 50k–100k	Est. revenue $185k–$498k after Steam's cut $337k–$767k before the cut	$11.99	2k reviews Very Positive	Visual NovelIndie
The Park® 2015	Est. copies ≈ 156k–253k SteamSpy 100k–200k	Est. revenue $556k–$1.5M after Steam's cut $1.0M–$2.3M before the cut	$12.99	3k reviews Mostly Positive	Horror Psychological Horror