Games like Living the Nightmare
Games like Living the Nightmare include Hades, Hades II, Dying Light, Noita, and Darkest Dungeon®. We matched them by the tags players give Living the Nightmare on Steam (Horror, Survival Horror, Hack and Slash, Roguelite, and Dungeon Crawler): closest matches first, and among equally close ones the better-known games.

Hades
Shared: Hack and Slash · Roguelite · Dungeon Crawler

Hades II
Shared: Hack and Slash · Roguelite · Dungeon Crawler

Dying Light
Shared: Survival Horror · Horror · Open World

Noita
Shared: Dungeon Crawler · Difficult · Roguelike

Darkest Dungeon®
Shared: Dungeon Crawler · Difficult · Perma Death

The Forest
Shared: Horror · Survival Horror · Open World

Ultimate Custom Night
Shared: Horror · Survival Horror · Difficult

Sons Of The Forest
Shared: Survival Horror · Horror · Open World

Dead by Daylight
Shared: Horror · Survival Horror · Survival

Moonlighter
Shared: Hack and Slash · Roguelite · Dungeon Crawler

Monstrum
Shared: Horror · Survival Horror · Roguelite

WORLD OF HORROR
Shared: Horror · Survival Horror · Roguelite

Darkwood
Shared: Horror · Survival Horror · Action

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

Don't Starve Together
Shared: Open World · Survival · Difficult

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

Five Nights at Freddy's: Sister Location
Shared: Horror · Survival Horror · Difficult

Crown Trick
Shared: Roguelite · Dungeon Crawler · Perma Death

Resident Evil 4
Shared: Horror · Survival Horror · Action

Cinderia
Shared: Hack and Slash · Roguelite · Dungeon Crawler

Five Nights at Freddy's 4
Shared: Horror · Survival Horror · Difficult

Outlast
Shared: Horror · Survival Horror · Survival

Mortal Sin
Shared: Hack and Slash · Dungeon Crawler · Roguelite

Path of Exile
Shared: Hack and Slash · Dungeon Crawler · Action RPG