Games like Horror Nightmare Collection
Games like Horror Nightmare Collection include The Forest, Firewatch, Outlast, Amnesia: A Machine For Pigs, and Resident Evil 7 Biohazard. We matched them by the tags players give Horror Nightmare Collection on Steam (Horror, Simulation, Walking Simulator, First-Person, and Action): closest matches first, and among equally close ones the better-known games.

The Forest
Shared: Horror · First-Person · Action

Firewatch
Shared: Walking Simulator · First-Person · Atmospheric

Outlast
Shared: Horror · First-Person · Atmospheric

Amnesia: A Machine For Pigs
Shared: Horror · Walking Simulator · First-Person

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

Lethal Company
Shared: Horror · First-Person · Exploration

Scanner Sombre
Shared: Horror · Walking Simulator · Exploration

SOMA
Shared: Horror · Atmospheric · First-Person

DON'T SCREAM
Shared: Horror · First-Person · Walking Simulator

What Remains of Edith Finch
Shared: Walking Simulator · First-Person · Exploration

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

Still Wakes the Deep
Shared: Horror · First-Person · Walking Simulator

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

Layers of Fear (2016)
Shared: Horror · Walking Simulator · First-Person

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

September 7th
Shared: Horror · Walking Simulator · First-Person

Poppy Playtime
Shared: Horror · First-Person · Singleplayer

Summer of '58
Shared: Horror · Walking Simulator · First-Person

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

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

The Complex: Expedition
Shared: Horror · Exploration · Action

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

Subnautica 2
Shared: Horror · Exploration · First-Person

SILENT HILL: Townfall
Shared: Horror · Action · First-Person