How much revenue did My Big Sister make?

$34k–$92k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did My Big Sister sell?

Q: How many copies did My Big Sister sell?

21k to 34k copies, based on its 686 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 21k–34k; $34k–$92k after Steam's cut $62k–$142k before Steam's cut; from 686 reviews (Very Positive)

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

Copies, estimated from reviews

typical (middle half) 1.3M–2.0M

best case 4.6M (MiSide)

Games like My Big Sister

A typical game among these

≈ 1.3M–2.0M copies

≈ $7.5M–$23.3M after Steam's cut

from ~31k 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: MiSide at ≈ 3.5M–5.8M copies, ≈ $14.6M–$39.2M after Steam's cut.

What their first month looked like

About half the games that made it here had over 24k reviews in their first month; the range was 691 to 64k.

The genre you'd be entering

These games: The similar games share Horror (8 of 8) and Psychological Horror (8 of 8).
The winners: Winners here lead with Psychological Horror + Story Rich, priced around $15.
When they shipped: 4 of the 8 similar games shipped in the last two years, so this genre is actively shipping.

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
The Evil Within 2 2017	Est. copies ≈ 1.1M–1.7M SteamSpy 1M–2M	Est. revenue $11.7M–$31.6M after Steam's cut $21.4M–$48.6M before Steam's cut	$39.99	31k reviews Very Positive	Horror Survival Horror
Fran Bow 2015	Est. copies ≈ 1.1M–1.8M SteamSpy 1M–2M	Est. revenue $4.6M–$12.5M after Steam's cut $8.4M–$19.2M before Steam's cut	$14.99	23k reviews Overwhelmingly Positive	Psychological Horror Story Rich
MiSide 2024	Est. copies ≈ 3.5M–5.8M 4.6x vs typical SteamSpy 1M–2M	Est. revenue $14.6M–$39.2M after Steam's cut $26.5M–$60.4M before Steam's cut	$14.99	143k reviews Overwhelmingly Positive	Psychological HorrorCute
Tiny Bunny 2025	Est. copies ≈ 761k–1.2M SteamSpy 500k–1M	Est. revenue $2.3M–$6.2M after Steam's cut $4.2M–$9.5M before Steam's cut	$10.99	31k reviews Very Positive	Visual Novel Horror
Little Nightmares II 2021	Est. copies ≈ 1.5M–2.4M 1.9x vs typical SteamSpy 1M–2M	Est. revenue $12.0M–$32.3M after Steam's cut $21.8M–$49.7M before Steam's cut	$29.99	59k reviews Very Positive	HorrorAdventure
KinitoPET 2024	Est. copies ≈ 367k–596k SteamSpy 200k–500k	Est. revenue $604k–$1.6M after Steam's cut $1.1M–$2.5M before Steam's cut	$5.99	15k reviews Very Positive	Psychological Horror Horror
SILENT HILL 2 2024	Est. copies ≈ 1.6M–2.7M 2.1x vs typical SteamSpy 500k–1M	Est. revenue $31.4M–$84.4M after Steam's cut $57.1M–$129.8M before Steam's cut	$69.99	66k reviews Very Positive	Psychological Horror Horror
Layers of Fear (2016) 2016	Est. copies ≈ 1.2M–1.9M SteamSpy 2M–5M	Est. revenue $6.3M–$17.1M after Steam's cut $11.5M–$26.3M before Steam's cut	$19.99	28k reviews Very Positive	Horror Psychological Horror