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How many copies did Gurumin: A Monstrous Adventure sell?

Estimated copies sold
≈ 55k–89k
$150k–$403k after Steam's cut $272k–$619k before Steam's cut
from 1k 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 Gurumin: A Monstrous Adventure and predicted how it would do from its 8 similar games. Every figure here, including Gurumin: A Monstrous Adventure's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 4k–7k
best case 930k (Sonic Frontiers)
Games like Gurumin: A Monstrous Adventure

A typical game among these

≈ 4k–7k copies

≈ $14k–$94k after Steam's cut

from ~188 reviews

Only the top fifth of 2019's Steam releases earned $34k or more before Steam's cut, so plan for that or less.

2 of the 8 similar games are hits.

Best case: Sonic Frontiers at ≈ 709k–1.2M copies, ≈ $7.8M–$21.0M 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 66 reviews in their first month; the range was 1 to 11k.
Games with under about 100 reviews in month one almost never recover.
The genre you'd be entering
These games
The similar games share 3D Platformer (5 of 8) and Platformer (5 of 8).
The winners
Winners here lead with Open World + Exploration, priced around $30. The breakout hits carry Open World + Exploration + Singleplayer; a typical game here doesn't.
When they shipped
The similar games span 2015 to 2024, and 2 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).

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