Games like Paranormal Preparatory School
Games like Paranormal Preparatory School include Slay the Princess — The Pristine Cut, The Life and Suffering of Sir Brante, Vampire: The Masquerade — Night Road, Suzerain, and Roadwarden. We matched them by the tags players give Paranormal Preparatory School on Steam (RPG, Interactive Fiction, Choose Your Own Adventure, First-Person, and Text-Based): closest matches first, and among equally close ones the better-known games.

Slay the Princess — The Pristine Cut
Shared: Choose Your Own Adventure · Horror · Interactive Fiction

The Life and Suffering of Sir Brante
Shared: RPG · Interactive Fiction · Choose Your Own Adventure

Vampire: The Masquerade — Night Road
Shared: Choose Your Own Adventure · Interactive Fiction · Text-Based

Suzerain
Shared: Choose Your Own Adventure · Interactive Fiction · RPG

Roadwarden
Shared: RPG · Text-Based · Interactive Fiction

Love Is All Around
Shared: First-Person · Interactive Fiction · Romance

Choice of Robots
Shared: Choose Your Own Adventure · Interactive Fiction · Text-Based

Breakout 13
Shared: Interactive Fiction · Choose Your Own Adventure · RPG

Baldur's Gate 3
Shared: RPG · Character Customization · Romance

Vampire: The Masquerade - Bloodlines
Shared: RPG · Horror · Vampires

The Three Kingdoms: Rebirth
Shared: First-Person · Interactive Fiction · Romance

Homicipher
Shared: Horror · Text-Based · Choose Your Own Adventure

Who's Lila?
Shared: Choose Your Own Adventure · Horror · Interactive Fiction

The Life and Suffering of Sir Brante — Chapter 1&2
Shared: Interactive Fiction · Choose Your Own Adventure · RPG

Knowledge, or know Lady
Shared: First-Person · Interactive Fiction · Romance

Kingdom Come: Deliverance
Shared: RPG · First-Person · Choose Your Own Adventure

The Bridge Curse Road to Salvation
Shared: First-Person · Horror · RPG

Tainted Grail: The Fall of Avalon
Shared: RPG · First-Person · Character Customization

Wayhaven Chronicles: Book One
Shared: RPG · Choose Your Own Adventure · Interactive Fiction

Aliya: Timelink
Shared: RPG · Interactive Fiction · Text-Based

Five Hearts Under One Roof season2
Shared: Choose Your Own Adventure · Interactive Fiction · Romance

Scarlet Hollow
Shared: Horror · Interactive Fiction · Supernatural

Dagon: by H. P. Lovecraft
Shared: Horror · First-Person · Interactive Fiction

I Wani Hug that Gator!
Shared: Choose Your Own Adventure · Interactive Fiction · Romance