Games like Incel Syndrome
Games like Incel Syndrome include The Test, The Coffin of Andy and Leyley, Until Then, The NOexistenceN of you AND me, and Milk inside a bag of milk inside a bag of milk. We matched them by the tags players give Incel Syndrome on Steam (Visual Novel, Dark Comedy, Philosophical, Psychological, and Interactive Fiction): closest matches first, and among equally close ones the better-known games.

The Test
Shared: Choose Your Own Adventure · Psychological · Visual Novel

The Coffin of Andy and Leyley
Shared: Dark Comedy · Psychological · Visual Novel

Until Then
Shared: Visual Novel · Interactive Fiction · Psychological

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

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

Slay the Princess — The Pristine Cut
Shared: Visual Novel · Choose Your Own Adventure · Story Rich

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

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

Before Your Eyes
Shared: Interactive Fiction · First-Person · Story Rich

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

Suzerain
Shared: Visual Novel · Choose Your Own Adventure · Interactive Fiction

Tiny Bunny
Shared: Visual Novel · Story Rich · 2D

Refind Self: The Personality Test Game
Shared: Visual Novel · Interactive Fiction · 2D

OPUS: Echo of Starsong - Full Bloom Edition
Shared: Visual Novel · Interactive Fiction · 2D

Far Away
Shared: Visual Novel · Choose Your Own Adventure · Singleplayer

Mesmalie
Shared: Visual Novel · Dark Comedy · Interactive Fiction

NEEDY STREAMER OVERLOAD
Shared: Visual Novel · Psychological · 2D

The Talos Principle
Shared: Philosophical · First-Person · Story Rich

Coffee Talk
Shared: Visual Novel · Interactive Fiction · Story Rich

Minds Beneath Us
Shared: Visual Novel · Choose Your Own Adventure · Story Rich

To the Moon
Shared: Interactive Fiction · Story Rich · Indie

The Beginner's Guide
Shared: Story Rich · First-Person · Psychological

Finding Paradise
Shared: 2D · Story Rich · Interactive Fiction

Higurashi When They Cry Hou - Ch.1 Onikakushi
Shared: Visual Novel · Psychological · Story Rich