Games like High School Dirty Secrets
Games like High School Dirty Secrets include MiSide, No, I'm not a Human, SOMA, Little Misfortune, and Sally Face - Episode One. We matched them by the tags players give High School Dirty Secrets on Steam (Psychological Horror, Horror, Anime, Dark, and Exploration): closest matches first, and among equally close ones the better-known games.

MiSide
Shared: Psychological Horror · Horror · Anime

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

SOMA
Shared: Psychological Horror · Horror · Dark

Little Misfortune
Shared: Psychological Horror · Horror · Female Protagonist

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

Mad Father
Shared: Psychological Horror · Horror · Anime

SILENT HILL f
Shared: Psychological Horror · Horror · Female Protagonist

Darkwood
Shared: Horror · Psychological Horror · Dark

Danganronpa V3: Killing Harmony
Shared: Anime · Female Protagonist · Psychological Horror

The Coffin of Andy and Leyley
Shared: Psychological Horror · Multiple Endings · Dark

What Remains of Edith Finch
Shared: Exploration · Mystery · Psychological Horror

Tiny Bunny
Shared: Horror · Psychological Horror · Dark

Poppy Playtime
Shared: Horror · Psychological Horror · Dark

Danganronpa: Trigger Happy Havoc
Shared: Anime · Psychological Horror · Horror

Fran Bow
Shared: Psychological Horror · Horror · Dark

Little Nightmares II
Shared: Horror · Psychological Horror · Dark

OMORI
Shared: Psychological Horror · Horror · Multiple Endings

The Cat Lady
Shared: Horror · Psychological Horror · Female Protagonist

Escape the Backrooms
Shared: Horror · Psychological Horror · Exploration

Phasmophobia
Shared: Horror · Psychological Horror · Dark

Mouthwashing
Shared: Psychological Horror · Horror · Dark

Detention
Shared: Horror · Psychological Horror · Dark

SILENT HILL 2
Shared: Psychological Horror · Horror · Story Rich

Ib
Shared: Horror · Psychological Horror · Exploration