Games like Silent Nights
Games like Silent Nights include Outlast, Poppy Playtime, SOMA, Mouthwashing, and Visage. We matched them by the tags players give Silent Nights on Steam (Horror, Psychological Horror, Survival Horror, Walking Simulator, and Atmospheric): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: Horror · Survival Horror · Psychological Horror

Poppy Playtime
Shared: Horror · Survival Horror · Singleplayer

SOMA
Shared: Horror · Psychological Horror · Atmospheric

Mouthwashing
Shared: Horror · Psychological Horror · Atmospheric

Visage
Shared: Horror · Psychological Horror · Survival Horror

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

Outlast 2
Shared: Horror · Psychological Horror · Survival Horror

Summer of '58
Shared: Horror · Psychological Horror · Atmospheric

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

ROUTINE
Shared: Psychological Horror · Atmospheric · Singleplayer

Layers of Fear (2016)
Shared: Horror · Psychological Horror · Walking Simulator

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

Darkwood
Shared: Horror · Survival Horror · Psychological Horror

Slender: The Arrival
Shared: Horror · Survival Horror · Psychological Horror

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

Amnesia: A Machine For Pigs
Shared: Horror · Walking Simulator · Psychological Horror

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

Fears to Fathom - Ironbark Lookout
Shared: Horror · Psychological Horror · Atmospheric

Blair Witch
Shared: Horror · Psychological Horror · Walking Simulator

Garten of Banban
Shared: Horror · Psychological Horror · Singleplayer

MiSide
Shared: Psychological Horror · Horror · Singleplayer

Still Wakes the Deep
Shared: Horror · Psychological Horror · Walking Simulator

Little Nightmares
Shared: Horror · Atmospheric · Singleplayer

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