Games like Fear the Moon
Games like Fear the Moon include Poppy Playtime, Resident Evil Requiem, MiSide, Resident Evil 7 Biohazard, and Outlast. We matched them by the tags players give Fear the Moon on Steam (Horror, Singleplayer, Werewolves, Cinematic, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Horror · Singleplayer · Survival Horror

Resident Evil Requiem
Shared: Horror · Survival Horror · Singleplayer

MiSide
Shared: Horror · Psychological Horror · Singleplayer

Resident Evil 7 Biohazard
Shared: Horror · Singleplayer · Survival Horror

Outlast
Shared: Horror · Survival Horror · Singleplayer

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

SOMA
Shared: Horror · Psychological Horror · Story Rich

Garten of Banban
Shared: Horror · Singleplayer · Psychological Horror

Five Nights at Freddy's: Security Breach
Shared: Horror · Singleplayer · Survival Horror

Outlast 2
Shared: Horror · Psychological Horror · Singleplayer

Resident Evil Village
Shared: Horror · Singleplayer · Survival Horror

Escape the Backrooms
Shared: Horror · Psychological Horror · Survival Horror

Resident Evil 4
Shared: Horror · Singleplayer · Survival Horror

SILENT HILL 2
Shared: Horror · Psychological Horror · Survival Horror

Little Nightmares
Shared: Horror · Singleplayer · Adventure

Little Nightmares II
Shared: Horror · Singleplayer · Adventure

The Beast Inside
Shared: Horror · Singleplayer · Survival Horror

Inside the Backrooms
Shared: Horror · Survival Horror · Psychological Horror

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

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

Amnesia: The Dark Descent
Shared: Horror · Psychological Horror · Survival Horror

Dark Deception
Shared: Horror · Singleplayer · Psychological Horror

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

ROUTINE
Shared: Singleplayer · Psychological Horror · Cinematic