Games like Prison Chain: The Unredeemed Thought
Games like Prison Chain: The Unredeemed Thought include No, I'm not a Human, Tiny Bunny, Sally Face - Episode One, Raging Loop, and The House in Fata Morgana. We matched them by the tags players give Prison Chain: The Unredeemed Thought on Steam (Visual Novel, Psychological Horror, Mystery, Atmospheric, and Story Rich): closest matches first, and among equally close ones the better-known games.

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

Tiny Bunny
Shared: Visual Novel · Atmospheric · Story Rich

Sally Face - Episode One
Shared: Psychological Horror · Story Rich · Mystery

Raging Loop
Shared: Visual Novel · Mystery · Psychological Horror

The House in Fata Morgana
Shared: Visual Novel · Mystery · Psychological Horror

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

The Wolf Among Us
Shared: Story Rich · Visual Novel · Choices Matter

Oxenfree
Shared: Story Rich · Atmospheric · Choices Matter

The Test
Shared: Psychological Horror · Story Rich · Multiple Endings

STEINS;GATE
Shared: Visual Novel · Story Rich · Multiple Endings

What Remains of Edith Finch
Shared: Atmospheric · Story Rich · Mystery

Zero Escape: Zero Time Dilemma
Shared: Visual Novel · Psychological Horror · Mystery

Firework
Shared: Mystery · Psychological Horror · Visual Novel

The Coffin of Andy and Leyley
Shared: Visual Novel · Story Rich · Psychological Horror

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

Return to Shironagasu Island
Shared: Visual Novel · Mystery · Psychological Horror

The Casting of Frank Stone™
Shared: Choices Matter · Multiple Endings · Story Rich

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

Danganronpa 2: Goodbye Despair
Shared: Visual Novel · Mystery · Story Rich

Mouthwashing
Shared: Psychological Horror · Atmospheric · Story Rich

Scarlet Hollow
Shared: Visual Novel · Psychological Horror · Choices Matter

Notch - The Innocent LunA: Eclipsed SinnerS
Shared: Story Rich · Mystery · Psychological Horror

The Test: Hypothesis Rising
Shared: Visual Novel · Choices Matter · Multiple Endings

OMORI
Shared: Psychological Horror · Story Rich · Multiple Endings