Games like Project Vic
Games like Project Vic include MiSide, Inside the Backrooms, Phasmophobia, Outlast, and Layers of Fear (2016). We matched them by the tags players give Project Vic on Steam (Psychological Horror, Horror, Adventure, Atmospheric, and Supernatural): closest matches first, and among equally close ones the better-known games.

MiSide
Shared: Psychological Horror · Horror · Atmospheric

Inside the Backrooms
Shared: Horror · Psychological Horror · Adventure

Phasmophobia
Shared: Horror · Psychological Horror · Supernatural

Outlast
Shared: Horror · Psychological Horror · Atmospheric

Layers of Fear (2016)
Shared: Psychological Horror · Horror · Atmospheric

Poppy Playtime
Shared: Horror · Psychological Horror · Puzzle

Little Nightmares II
Shared: Horror · Adventure · Psychological Horror

Garten of Banban
Shared: Horror · Psychological Horror · Puzzle

Little Nightmares
Shared: Horror · Adventure · Atmospheric

SOMA
Shared: Psychological Horror · Horror · Atmospheric

The Exit 8
Shared: Horror · Psychological Horror · Puzzle

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

Amnesia: The Dark Descent
Shared: Horror · Psychological Horror · Atmospheric

Resident Evil 7 Biohazard
Shared: Horror · Psychological Horror · Atmospheric

Firework
Shared: Horror · Psychological Horror · Atmospheric

The Cabin Factory
Shared: Psychological Horror · Horror · Atmospheric

Escape the Backrooms
Shared: Horror · Psychological Horror · Adventure

Labyrinthine
Shared: Horror · Psychological Horror · Supernatural

Firewatch
Shared: Adventure · Atmospheric · Walking Simulator

Garten of Banban 2
Shared: Horror · Psychological Horror · Puzzle

Ready or Not
Shared: FPS · Horror · Psychological Horror

Blair Witch
Shared: Horror · Psychological Horror · Adventure

Still Wakes the Deep
Shared: Psychological Horror · Horror · Atmospheric

Scanner Sombre
Shared: Horror · Atmospheric · Adventure