Games like PrisonSoul: Reunion
Games like PrisonSoul: Reunion include Sanfu, The Room 4: Old Sins, The Room Two, The Room Three, and Impostor Factory. We matched them by the tags players give PrisonSoul: Reunion on Steam (Emotional, Visual Novel, Story Rich, Lovecraftian, and Atmospheric): closest matches first, and among equally close ones the better-known games.

Sanfu
Shared: Mystery · Puzzle · Visual Novel

The Room 4: Old Sins
Shared: Puzzle · Lovecraftian · Mystery

The Room Two
Shared: Puzzle · Atmospheric · Mystery

The Room Three
Shared: Puzzle · Mystery · Atmospheric

Impostor Factory
Shared: Emotional · Story Rich · Atmospheric

The Room
Shared: Puzzle · Atmospheric · Mystery

Gorogoa
Shared: Puzzle · Atmospheric · Hand-drawn

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

Sally Face - Episode One
Shared: Story Rich · Puzzle · Atmospheric

Outer Wilds
Shared: Story Rich · Mystery · Atmospheric

Brothers - A Tale of Two Sons
Shared: Story Rich · Atmospheric · Emotional

Until Then
Shared: Emotional · Visual Novel · Story Rich

Call of the Sea
Shared: Story Rich · Puzzle · Lovecraftian

OneShot
Shared: Story Rich · Atmospheric · Puzzle

The House of Da Vinci
Shared: Puzzle · Hidden Object · Mystery

Boxes: Lost Fragments
Shared: Puzzle · Mystery · Atmospheric

Firework
Shared: Puzzle · Visual Novel · Atmospheric

WILL: A Wonderful World / WILL:美好世界
Shared: Story Rich · Puzzle · Emotional

Firewatch
Shared: Story Rich · Atmospheric · Mystery

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

OPUS: Echo of Starsong - Full Bloom Edition
Shared: Emotional · Visual Novel · Story Rich

The Crown of Leaves
Shared: Visual Novel · Story Rich · Atmospheric

A Space for the Unbound
Shared: Emotional · Story Rich · Puzzle

Phoenix Wright: Ace Attorney Trilogy
Shared: Visual Novel · Story Rich · Mystery