Games like Kodoku:As the Moon Mourns
Games like Kodoku:As the Moon Mourns include Outlast, Escape the Backrooms, Resident Evil 7 Biohazard, Outlast 2, and Resident Evil Village. We matched them by the tags players give Kodoku:As the Moon Mourns on Steam (Horror, Psychological Horror, Faith, Action, and Survival Horror): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: Horror · Psychological Horror · Survival Horror

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

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

Outlast 2
Shared: Horror · Psychological Horror · Survival Horror

Resident Evil Village
Shared: Horror · Survival Horror · Action

The Outlast Trials
Shared: Horror · Psychological Horror · Survival Horror

Dead by Daylight
Shared: Horror · Survival Horror · Psychological Horror

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

Poppy Playtime
Shared: Horror · Psychological Horror · Survival Horror

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

The Evil Within 2
Shared: Horror · Psychological Horror · Survival Horror

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

Alien: Isolation
Shared: Horror · Survival Horror · Stealth

The Beast Inside
Shared: Horror · Survival Horror · Action

Dark Deception
Shared: Horror · Psychological Horror · Survival Horror

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

Buckshot Roulette
Shared: Horror · Psychological Horror · Psychological

Resident Evil Requiem
Shared: Horror · Survival Horror · Action

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

Manhunt
Shared: Horror · Psychological Horror · Action

Resident Evil 4
Shared: Horror · Action · Survival Horror

Lethal Company
Shared: Horror · Survival Horror · Psychological Horror

Amnesia: The Bunker
Shared: Horror · Survival Horror · Stealth

Bendy and the Dark Revival
Shared: Horror · Action · Survival Horror