Games like Crazy Neighbour
Games like Crazy Neighbour include Poppy Playtime, Outlast, Milk outside a bag of milk outside a bag of milk, OMORI, and MiSide. We matched them by the tags players give Crazy Neighbour on Steam (Psychological Horror, Indie, Singleplayer, Pixel Graphics, and First-Person): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Singleplayer · Psychological Horror · Horror

Outlast
Shared: Psychological Horror · First-Person · Horror

Milk outside a bag of milk outside a bag of milk
Shared: Psychological Horror · Pixel Graphics · Indie

OMORI
Shared: Psychological Horror · Indie · Pixel Graphics

MiSide
Shared: Psychological Horror · Singleplayer · First-Person

No, I'm not a Human
Shared: Psychological Horror · Indie · Singleplayer

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

Layers of Fear (2016)
Shared: Psychological Horror · Singleplayer · Horror

Getting Over It with Bennett Foddy
Shared: Psychological Horror · Singleplayer · Indie

IMSCARED
Shared: Indie · Psychological Horror · Pixel Graphics

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

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

Dark Deception
Shared: Singleplayer · Psychological Horror · Horror

DISTRAINT: Deluxe Edition
Shared: Psychological Horror · Indie · Pixel Graphics

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

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

Five Nights at Freddy's 2
Shared: Singleplayer · Psychological Horror · Horror

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

OneShot
Shared: Indie · Pixel Graphics · Singleplayer

SOMA
Shared: Psychological Horror · Horror · Singleplayer

Lethal Company
Shared: First-Person · Psychological Horror · Horror

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

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

Penumbra Overture
Shared: Indie · First-Person · Psychological Horror