How many copies did Mysterious School sell?

47k to 77k 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 players who have it: ≈ 47k–77k; from 2k reviews (Mostly Negative)

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

Copies, estimated from reviews

typical (middle half) 81k–183k

best case 534k (Detention)

Games like Mysterious School

A typical game among these

≈ 81k–183k copies

≈ $433k–$1.6M after Steam's cut

from ~3k 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: Detention at ≈ 407k–661k copies, ≈ $1.3M–$3.6M after Steam's cut. It is a breakout hit, far above a typical game.

What their first month looked like

About half the games that made it here had over 786 reviews in their first month; the range was 504 to 1k.

The genre you'd be entering

These games: The similar games share 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.
When they shipped: The similar games span 2015 to 2024, and 3 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 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 ≈ 407k–661k 3.7x vs typical SteamSpy 500k–1M	Est. revenue $1.3M–$3.6M after Steam's cut $2.4M–$5.6M before Steam's cut	$11.99	12k reviews Overwhelmingly Positive	HorrorIndie
1000xRESIST 2024	Est. copies ≈ 175k–284k 2.2x vs typical SteamSpy 200k–500k	Est. revenue $962k–$2.6M after Steam's cut $1.7M–$4.0M before Steam's cut	$19.99	7k reviews Very Positive	Female ProtagonistThriller
Martha Is Dead 2022	Est. copies ≈ 98k–159k SteamSpy 100k–200k	Est. revenue $809k–$2.2M after Steam's cut $1.5M–$3.3M before Steam's cut	$29.99	4k reviews Mostly Positive	Psychological Horror Story Rich
Alone in the Dark 2024	Est. copies ≈ 122k–199k 1.5x vs typical SteamSpy 100k–200k	Est. revenue $1.3M–$3.6M after Steam's cut $2.4M–$5.6M before Steam's cut	$39.99	5k reviews Mostly Positive	Psychological HorrorLovecraftian
OXENFREE II: Lost Signals 2023	Est. copies ≈ 52k–84k SteamSpy 200k–500k	Est. revenue $284k–$762k after Steam's cut $516k–$1.2M before Steam's cut	$19.99	2k reviews Very Positive	ThrillerSupernatural
Folie Fatale 2024	Est. copies ≈ 67k–109k SteamSpy 50k–100k	Est. revenue $110k–$296k after Steam's cut $200k–$455k before Steam's cut	$5.99	3k reviews Very Positive	Female ProtagonistOtome
The Chrono Jotter 2021	Est. copies ≈ 57k–92k SteamSpy 50k–100k	Est. revenue $186k–$501k after Steam's cut $339k–$771k before Steam's cut	$11.99	2k reviews Very Positive	Visual NovelIndie
The Park® 2015	Est. copies ≈ 156k–254k SteamSpy 100k–200k	Est. revenue $557k–$1.5M after Steam's cut $1.0M–$2.3M before Steam's cut	$12.99	3k reviews Mostly Positive	Horror Psychological Horror