How much revenue did Ergastulum: Dungeon Nightmares III make?

$5k–$12k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Ergastulum: Dungeon Nightmares III sell?

Q: How many copies did Ergastulum: Dungeon Nightmares III sell?

2k to 3k copies, based on its 84 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 2k–3k; $5k–$12k after Steam's cut $8k–$19k before the cut; from 84 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 Ergastulum: Dungeon Nightmares III out and predicted the genre from its 8 similar games. Every figure here, including Ergastulum: Dungeon Nightmares III's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 6.5M–16.5M

best case 87.5M (Left 4 Dead 2)

Games like Ergastulum: Dungeon Nightmares III

The middle of these games

≈ 6.5M–16.5M copies

≈ $71.8M–$233.9M after Steam's cut

from ~194k 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: Left 4 Dead 2 at ≈ 66.7M–108.4M copies, ≈ $183.2M–$492.6M after Steam's cut.

The genre you'd be entering

Your set: Your set clusters on First-Person (5 of 8) and Horror (5 of 8).
The winners: Winners here lead with Zombies + Co-op, priced around $10.
The era: The games you compared span 2009 to 2021, and none of them 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).

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SCP: Secret Laboratory 2017	Est. copies ≈ 8.0M–13.1M SteamSpy 5M–10M	Est. revenue Free	Free	234k reviews Very Positive	Free to PlayMultiplayer
Outlast 2013	Est. copies ≈ 8.7M–14.2M SteamSpy 2M–5M	Est. revenue $36.0M–$96.9M after Steam's cut $65.5M–$149.1M before the cut	$14.99	138k reviews Overwhelmingly Positive	HorrorFirst-Person
Killing Floor 2 2016	Est. copies ≈ 5.4M–8.7M SteamSpy 2M–5M	Est. revenue $44.4M–$119.3M after Steam's cut $80.6M–$183.5M before the cut	$29.99	129k reviews Very Positive	ZombiesMultiplayer
Resident Evil Village 2021	Est. copies ≈ 3.8M–6.2M SteamSpy 2M–5M	Est. revenue $41.8M–$112.3M after Steam's cut $76.0M–$172.8M before the cut	$39.99	153k reviews Overwhelmingly Positive	Survival Horror Horror
Left 4 Dead 2 2009	Est. copies ≈ 66.7M–108.4M 5.5x vs typical SteamSpy 50M–100M	Est. revenue $183.2M–$492.6M after Steam's cut $333.1M–$757.9M before the cut	$9.99	1.1M reviews Overwhelmingly Positive	ZombiesCo-op
Hunt: Showdown 1896 2019	Est. copies ≈ 8.0M–13.0M SteamSpy 10M–20M	Est. revenue $87.8M–$236.2M after Steam's cut $159.7M–$363.4M before the cut	$39.99	277k reviews Mostly Positive	Open WorldExtraction Shooter
Metro Exodus 2020	Est. copies ≈ 3.4M–5.5M SteamSpy 2M–5M	Est. revenue $27.7M–$74.4M after Steam's cut $50.3M–$114.5M before the cut	$29.99	135k reviews Very Positive	Post-apocalypticFPS
Dying Light 2015	Est. copies ≈ 24.1M–39.2M 2.6x vs typical SteamSpy 10M–20M	Est. revenue $165.8M–$445.8M after Steam's cut $301.5M–$685.8M before the cut	$24.99	494k reviews Overwhelmingly Positive	ZombiesSurvival Horror