Games like Unsent
Games like Unsent include Firework, Poppy Playtime, The Exit 8, Phasmophobia, and What Remains of Edith Finch. We matched them by the tags players give Unsent on Steam (Horror, Thriller, Puzzle, Walking Simulator, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

Firework
Shared: Horror · Puzzle · Psychological Horror

Poppy Playtime
Shared: Horror · Puzzle · Psychological Horror

The Exit 8
Shared: Puzzle · Horror · Walking Simulator

Phasmophobia
Shared: Horror · Psychological Horror · Thriller

What Remains of Edith Finch
Shared: Walking Simulator · Mystery · Female Protagonist

Dread Flats
Shared: Horror · Psychological Horror · Thriller

MiSide
Shared: Horror · Psychological Horror · Thriller

Mouthwashing
Shared: Horror · Psychological Horror · Walking Simulator

Layers of Fear (2016)
Shared: Horror · Psychological Horror · Walking Simulator

Inside the Backrooms
Shared: Horror · Puzzle · Psychological Horror

Garten of Banban
Shared: Horror · Psychological Horror · Puzzle

The Death | Thần Trùng
Shared: Horror · Puzzle · Psychological Horror

Detention
Shared: Horror · Puzzle · Psychological Horror

Summer of '58
Shared: Horror · Thriller · Walking Simulator

No, I'm not a Human
Shared: Horror · Psychological Horror · Multiple Endings

Sally Face - Episode One
Shared: Horror · Psychological Horror · Puzzle

The Scourge Tai ng
Shared: Horror · Multiple Endings · Puzzle

Fears to Fathom - Ironbark Lookout
Shared: Horror · Thriller · Psychological Horror

Fran Bow
Shared: Horror · Psychological Horror · Puzzle

The Bridge Curse Road to Salvation
Shared: Horror · Puzzle · Psychological Horror

Subliminal
Shared: Psychological Horror · Thriller · Horror

ParanormalHK
Shared: Horror · Psychological Horror · Thriller

Firewatch
Shared: Walking Simulator · Adventure · Horror

The Park®
Shared: Horror · Walking Simulator · Psychological Horror