Games like NIGHTWARD
Games like NIGHTWARD include Poppy Playtime, SOMA, Outlast, Inside the Backrooms, and Lethal Company. We matched them by the tags players give NIGHTWARD on Steam (Horror, Psychological Horror, Survival Horror, First-Person, and Atmospheric): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Horror · First-Person · Survival Horror

SOMA
Shared: Horror · Psychological Horror · Atmospheric

Outlast
Shared: Horror · Survival Horror · First-Person

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

Lethal Company
Shared: Horror · First-Person · Survival Horror

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

Outlast 2
Shared: Horror · Psychological Horror · Survival Horror

Sally Face - Episode One
Shared: Psychological Horror · Horror · Story Rich

What Remains of Edith Finch
Shared: Atmospheric · First-Person · Mystery

Little Nightmares
Shared: Horror · Atmospheric · Adventure

Layers of Fear (2016)
Shared: Horror · Psychological Horror · Atmospheric

MiSide
Shared: Psychological Horror · Horror · First-Person

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

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

Garten of Banban
Shared: Horror · Psychological Horror · First-Person

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

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

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

Visage
Shared: Horror · Psychological Horror · Survival Horror

Firewatch
Shared: Atmospheric · Adventure · First-Person

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

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

Little Nightmares II
Shared: Horror · Psychological Horror · Adventure

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