Games like The Patient
Games like The Patient include Poppy Playtime, No, I'm not a Human, Outlast, SOMA, and Inside the Backrooms. We matched them by the tags players give The Patient on Steam (Horror, 1990's, Psychological Horror, Choices Matter, and Mystery): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Horror · Psychological Horror · Dark

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

Outlast
Shared: Horror · Psychological Horror · Atmospheric

SOMA
Shared: Horror · Psychological Horror · Atmospheric

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

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

Outlast 2
Shared: Horror · Psychological Horror · Survival Horror

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

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

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

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

Amanda the Adventurer
Shared: Horror · 1990's · Mystery

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

Firework
Shared: Horror · Psychological Horror · Mystery

Phasmophobia
Shared: Horror · Psychological Horror · First-Person

Mouthwashing
Shared: Horror · Psychological Horror · Atmospheric

Sally Face - Episode One
Shared: Psychological Horror · Horror · Dark

DEVOUR
Shared: Horror · Psychological Horror · Survival Horror

The Cabin Factory
Shared: Horror · Psychological Horror · Choices Matter

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

Buckshot Roulette
Shared: Horror · Dark · First-Person

Visage
Shared: Horror · Psychological Horror · Dark

Backrooms: Escape Together
Shared: Horror · Psychological Horror · Atmospheric

Garten of Banban 2
Shared: Horror · Psychological Horror · First-Person