Games like Check-In, Never Out
Games like Check-In, Never Out include Escape the Backrooms, MiSide, Outlast, Poppy Playtime, and Five Nights at Freddy's: Security Breach. We matched them by the tags players give Check-In, Never Out on Steam (3D, Indie, Horror, Psychological Horror, and First-Person): closest matches first, and among equally close ones the better-known games.

Escape the Backrooms
Shared: Horror · Psychological Horror · First-Person

MiSide
Shared: Psychological Horror · Horror · 3D

Outlast
Shared: Horror · First-Person · Psychological Horror

Poppy Playtime
Shared: Horror · Singleplayer · First-Person

Five Nights at Freddy's: Security Breach
Shared: Horror · Singleplayer · First-Person

Buckshot Roulette
Shared: Horror · First-Person · Indie

The Beast Inside
Shared: Horror · First-Person · Adventure

Outlast 2
Shared: Horror · Psychological Horror · First-Person

Garten of Banban
Shared: Horror · Psychological Horror · First-Person

Ready or Not
Shared: Horror · Singleplayer · First-Person

Resident Evil 7 Biohazard
Shared: Horror · First-Person · Singleplayer

Dark Deception
Shared: Horror · First-Person · Psychological Horror

Resident Evil Village
Shared: Horror · First-Person · Action

Blair Witch
Shared: Horror · Indie · Psychological Horror

Bendy and the Dark Revival
Shared: Horror · First-Person · Indie

SILENT HILL: Townfall
Shared: Horror · Psychological Horror · Action

Five Nights at Freddy's: Secret of the Mimic
Shared: Horror · First-Person · 3D

Spooky's Jump Scare Mansion: HD Renovation
Shared: Indie · Horror · First-Person

Bendy and the Ink Machine
Shared: Horror · First-Person · Singleplayer

We Happy Few
Shared: Indie · Adventure · Action

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

Phasmophobia
Shared: Horror · Psychological Horror · First-Person

IMSCARED
Shared: Indie · Horror · Psychological Horror

Resident Evil Requiem
Shared: Horror · Action · First-Person