How many copies did Cthulhu: Death Escape / 克苏鲁:死亡逃脱 Prototype sell?

An estimated 4k to 6k copies, based on its 149 Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Cthulhu: Death Escape / 克苏鲁:死亡逃脱 Prototype make?

Cthulhu: Death Escape / 克苏鲁:死亡逃脱 Prototype is free to play, so there is no copy-sales revenue to estimate.

How big is Cthulhu: Death Escape / 克苏鲁:死亡逃脱 Prototype?

Estimated owners: ≈ 4k–6k; from 149 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 Cthulhu: Death Escape / 克苏鲁:死亡逃脱 Prototype out and predicted the genre from its 8 similar games. Every figure here, including Cthulhu: Death Escape / 克苏鲁:死亡逃脱 Prototype's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 2.2M–2.4M

best case 28.9M (Phasmophobia)

The Atmospheric lane

A big, proven genre, though hit-driven: most sell around 2.3M copies, while a few break out far above.

A typical game

≈ 2.3M copies

≈ $18.0M after Steam's cut

from ~54k reviews

Best case

≈ 28.9M copies

Phasmophobia · ≈ $223.1M after Steam's cut

from 833k reviews

A breakout hit, far above a typical game.

5 of your 8 games sit in the typical range; 1 is a breakout hit far above it, and 2 are too small to compare.

Copies and revenue are rough lifetime estimates from the review count; typical figures are medians per column, so they can come from different games.

The lane you'd be entering

Winners here lead with Horror + Online Co-Op, priced around $20.
The breakout hits carry Online Co-Op + Co-op + Supernatural; a typical game here doesn't.
The games you compared span 2010 to 2023, a lane with a long track record.
A typical game here lands in Diamond ($1M+ before Steam's cut, est.). Tiers: Chris Zukowski's benchmark tiers.

Similar games

Game	Price	Reviews	Tags	Est. copies	Est. revenue
UNO 2017	Est. copies ≈ 1.9M–3.0M SteamSpy 2M–5M	Est. revenue $5.1M–$13.7M net $9.3M–$21.1M gross	$9.99	54k reviews Mostly Positive	Card GameMultiplayer +6
Phasmophobia 2020	Est. copies ≈ 22.0M–35.8M 15x vs typical SteamSpy 10M–20M	Est. revenue $121.0M–$325.2M net $219.9M–$500.3M gross	$19.99	833k reviews Very Positive	HorrorOnline Co-Op +6
The Room 2014	Est. copies ≈ 1.6M–2.7M too small to compare SteamSpy 500k–1M	Est. revenue $2.2M–$6.0M net $4.1M–$9.3M gross	$4.99	31k reviews Overwhelmingly Positive	PuzzleMystery +6
Lobotomy Corporation \| Monster Management Simulation 2018	Est. copies ≈ 1.7M–2.7M SteamSpy 1M–2M	Est. revenue $11.5M–$31.0M net $20.9M–$47.6M gross	$24.99	55k reviews Very Positive	ManagementDifficult +6
Amnesia: The Dark Descent 2010	Est. copies ≈ 1.8M–3.0M too small to compare SteamSpy 2M–5M	Est. revenue $10.1M–$27.3M net $18.4M–$42.0M gross	$19.99	35k reviews Very Positive	HorrorGore +6
DREDGE 2023	Est. copies ≈ 1.3M–2.2M SteamSpy 1M–2M	Est. revenue $9.1M–$24.5M net $16.6M–$37.8M gross	$24.99	55k reviews Overwhelmingly Positive	ExplorationFishing +6
What Remains of Edith Finch 2017	Est. copies ≈ 1.8M–2.9M SteamSpy 500k–1M	Est. revenue $9.7M–$26.2M net $17.7M–$40.3M gross	$19.99	52k reviews Overwhelmingly Positive	Story RichAtmospheric +6
SOMA 2015	Est. copies ≈ 2.4M–3.9M SteamSpy 2M–5M	Est. revenue $19.8M–$53.2M net $36.0M–$81.9M gross	$29.99	52k reviews Overwhelmingly Positive	HorrorPsychological Horror +6