Games like Thoughtless
Games like Thoughtless include Slay the Princess — The Pristine Cut, Milk inside a bag of milk inside a bag of milk, Tiny Bunny, Scarlet Hollow, and Homicipher. We matched them by the tags players give Thoughtless on Steam (Visual Novel, Interactive Fiction, Text-Based, Psychological Horror, and Horror): closest matches first, and among equally close ones the better-known games.

Slay the Princess — The Pristine Cut
Shared: Visual Novel · Psychological Horror · Horror

Milk inside a bag of milk inside a bag of milk
Shared: Visual Novel · Psychological Horror · Horror

Tiny Bunny
Shared: Visual Novel · Horror · Psychological Horror

Scarlet Hollow
Shared: Visual Novel · Psychological Horror · Horror

Homicipher
Shared: Visual Novel · Horror · Text-Based

Dagon: by H. P. Lovecraft
Shared: Visual Novel · Horror · Psychological Horror

The NOexistenceN of you AND me
Shared: Visual Novel · Psychological Horror · Interactive Fiction

The Hungry Lamb: Traveling in the Late Ming Dynasty
Shared: Visual Novel · Interactive Fiction · Multiple Endings

Milk outside a bag of milk outside a bag of milk
Shared: Visual Novel · Psychological Horror · Text-Based

Suzerain
Shared: Visual Novel · Interactive Fiction · Text-Based

Athanasy
Shared: Visual Novel · Text-Based · Horror

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

The Casting of Frank Stone™
Shared: Horror · Psychological Horror · Multiple Endings

Aliya: Timelink
Shared: Interactive Fiction · Visual Novel · Text-Based

Coffee Talk
Shared: Visual Novel · Interactive Fiction · Dialogue Heavy

Doki Doki Literature Club Plus!
Shared: Visual Novel · Psychological Horror · Interactive Fiction

The Life and Suffering of Sir Brante
Shared: Interactive Fiction · Visual Novel · Text-Based

Who's Lila?
Shared: Psychological Horror · Horror · Interactive Fiction

Raging Loop
Shared: Visual Novel · Psychological Horror · Adventure

Neo Cab
Shared: Visual Novel · Interactive Fiction · Choices Matter

Zero Escape: The Nonary Games
Shared: Visual Novel · Psychological Horror · Story Rich

The Letter - Horror Visual Novel
Shared: Visual Novel · Horror · Psychological Horror

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

The Test
Shared: Psychological Horror · Visual Novel · Multiple Endings

