Description

Inspired by "The Russian Sleep Experiment," this co-op multiplayer horror game challenges players to collect crucial evidence from past experiments. Work together to control the gas, evade the roaming monster, and uncover the terrifying truth.

Steam Capsule Image

Trailers & Screenshots

Price

$5.99

In-Game

players

Reviews

14.0

64.29%

Followers

68.0

following

Release

Oct 18, 2025

Avg Playtime

hours

Sleepless Details & Features

Genres

Action Adventure Indie

Features

Platforms

Windows

Developer

CaRuFy, Nagodo

Publisher

Mental Studios

Sleepless Sales & Wishlist Estimates

AI Estimate

Copies Sold (est)

Revenue (est)

Wishlist Forecast

Similar Games of Sleepless

Match is based on overlap between this game's top 5 tags and each game's top 5 tags (≥ 3)

Ranked by tag overlap first, then by followers and reviews for Sleepless.

Showing 10 of 100

Tag Overlaps

Sorted by overlap of top 5 tags (minimum 3 matches), then followers and reviews.

#	Game	Tag overlap	Price	Followers	Reviews	Review Score
1	Poppy Playtime	5/5	Free	208,371	134,786	88%
2	Alan Wake	5/5	$14.99	49,259	56,609	90%
3	Deathground	5/5	$14.99	27,347	965	63%
4	Those Who Remain	5/5	$19.99	12,803	835	67%
5	Shadows Peak	5/5	$9.99	11,439	341	72%
6	Final Sentence	5/5	$8.99	11,430	427	84%
7	Full Fathom	5/5	Free	11,386	—	—
8	Alan Wake's American Nightmare	5/5	$8.99	8,170	10,279	74%
9	Daylight	5/5	$4.99	5,257	1,576	50%
10	猫不语	5/5	$6.99	4,490	57	68%