Games like Deep Sleep Trilogy
Games like Deep Sleep Trilogy include Little Nightmares, The Room, Papers, Please, Five Nights at Freddy's: Into the Pit, and Tales of the Black Forest. We matched them by the tags players give Deep Sleep Trilogy on Steam (Indie, Adventure, Horror, Point & Click, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Little Nightmares
Shared: Horror · Adventure · Atmospheric

The Room
Shared: Point & Click · Adventure · Indie

Papers, Please
Shared: Indie · Point & Click · Pixel Graphics

Five Nights at Freddy's: Into the Pit
Shared: Horror · Adventure · Pixel Graphics

Tales of the Black Forest
Shared: Indie · Horror · Pixel Graphics

DISTRAINT: Deluxe Edition
Shared: Indie · Horror · Adventure

The Room Two
Shared: Point & Click · Horror · Adventure

Fran Bow
Shared: Point & Click · Horror · Adventure

Rusty Lake Paradise
Shared: Indie · Adventure · Point & Click

Little Nightmares II
Shared: Adventure · Horror · Singleplayer

Sally Face - Episode One
Shared: Indie · Horror · Adventure

There Is No Game: Wrong Dimension
Shared: Indie · Adventure · Point & Click

Chants of Sennaar
Shared: Adventure · Indie · Singleplayer

The Room Three
Shared: Adventure · Indie · Point & Click

The Rewinder
Shared: Adventure · Pixel Graphics · Singleplayer

Samsara Room
Shared: Indie · Adventure · Point & Click

Stray
Shared: Adventure · Singleplayer · Atmospheric

Little Misfortune
Shared: Indie · Point & Click · Adventure

Five Nights at Freddy's
Shared: Horror · Indie · Singleplayer

OneShot
Shared: Indie · Pixel Graphics · Atmospheric

Firewatch
Shared: Adventure · Atmospheric · Indie

The Excavation of Hob's Barrow
Shared: Adventure · Point & Click · Horror

Endacopia
Shared: Adventure · Point & Click · Horror

Stories Untold
Shared: Adventure · Horror · Indie