How much revenue did Underground Keeper make?

$3k–$9k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Underground Keeper sell?

Q: How many copies did Underground Keeper sell?

2k to 4k copies, based on its 56 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 2k–4k; $3k–$9k after Steam's cut $6k–$13k before the cut; from 56 reviews (Mostly 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 Underground Keeper out and predicted the genre from its 8 similar games. Every figure here, including Underground Keeper's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 30k–265k

best case 577k (Shadows of Doubt)

Games like Underground Keeper

The middle of these games

≈ 30k–265k copies

≈ $69k–$2.2M after Steam's cut

from ~2k reviews

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

5 of your 8 similar games are hits.

Best case: Shadows of Doubt at ≈ 440k–715k copies, ≈ $3.0M–$8.1M after Steam's cut.

What it took to get here

About half the games that made it here had over 479 reviews in their first month; the spread ran 135 to 13k.

The genre you'd be entering

Your set: Your set clusters on Horror (6 of 8) and Stealth (5 of 8).
The winners: Winners here lead with Detective + Immersive Sim, priced around $25.
The era: The games you compared span 2013 to 2024, and 2 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 79 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
Labyrinthine 2023	Est. copies ≈ 433k–703k 9.7x vs typical SteamSpy 1M–2M	Est. revenue $1.2M–$3.2M after Steam's cut $2.2M–$4.9M before the cut	$9.99	17k reviews Very Positive	HorrorOnline Co-Op
Shadows of Doubt 2024	Est. copies ≈ 440k–715k 9.9x vs typical SteamSpy 500k–1M	Est. revenue $3.0M–$8.1M after Steam's cut $5.5M–$12.5M before the cut	$24.99	18k reviews Very Positive	DetectiveImmersive Sim
Hello Neighbor Pre-Alpha 2019	Est. copies ≈ 74k–121k SteamSpy 200k–500k	Est. revenue Free	Free	3k reviews Very Positive	Horror Stealth
Exit From 2021	Est. copies ≈ 14k–22k SteamSpy 50k–100k	Est. revenue $37k–$100k after Steam's cut $68k–$154k before the cut	$9.99	547 reviews Very Positive	Horror Psychological Horror
Monstrum 2 2022	Est. copies ≈ 25k–41k SteamSpy 50k–100k	Est. revenue Free	Free	1k reviews Mixed	HorrorOnline Co-Op
MirrorMoon EP 2013	Est. copies ≈ 38k–62k SteamSpy 50k–100k	Est. revenue $157k–$422k after Steam's cut $286k–$650k before the cut	$14.99	603 reviews Mixed	IndieExploration
Hello Neighbor Alpha 1 2019	Est. copies ≈ 125k–204k 2.4x vs typical SteamSpy 200k–500k	Est. revenue Free	Free	4k reviews Very Positive	CartoonyHorror
CAPTURED 2024	Est. copies ≈ 17k–27k SteamSpy under 20k	Est. revenue $30k–$80k after Steam's cut $54k–$123k before the cut	$6.45	675 reviews Overwhelmingly Positive	Psychological Horror Horror