Games like Studio System : Guardian Angel
Games like Studio System : Guardian Angel include MiSide, Escape the Backrooms, Dead Space, SILENT HILL 2, and Alan Wake. We matched them by the tags players give Studio System : Guardian Angel on Steam (3D, Shooter, Psychological Horror, Horror, and Cute): closest matches first, and among equally close ones the better-known games.

MiSide
Shared: Psychological Horror · Cute · Horror

Escape the Backrooms
Shared: Horror · Psychological Horror · 3D

Dead Space
Shared: Horror · Psychological Horror · Shooter

SILENT HILL 2
Shared: Psychological Horror · Horror · Third Person

Alan Wake
Shared: Horror · Action · Third Person

The Callisto Protocol™
Shared: Horror · Shooter · Third Person

Outlast
Shared: Horror · Psychological Horror · Action

Darkwood
Shared: Horror · Psychological Horror · Action

The Evil Within 2
Shared: Horror · Psychological Horror · Action

Choo-Choo Charles
Shared: Horror · Shooter · 3D

Ready or Not
Shared: Shooter · Horror · Psychological Horror

Five Nights at Freddy's: Security Breach
Shared: Horror · 3D · Action

Grand Theft Auto V Legacy
Shared: Action · Shooter · Third Person

SILENT HILL f
Shared: Psychological Horror · Horror · Action

Garten of Banban
Shared: Horror · Psychological Horror · 3D

Little Nightmares
Shared: Horror · Adventure · Psychological Horror

Spooky's Jump Scare Mansion: HD Renovation
Shared: Horror · Cute · Psychological Horror

HOLE
Shared: Horror · Psychological Horror · Shooter

The Evil Within
Shared: Horror · Psychological Horror · Action

Resident Evil 4 (2005)
Shared: Horror · Action · Adventure

Alan Wake's American Nightmare
Shared: Horror · Action · Third Person

Dead Space™ 2
Shared: Horror · Shooter · Action

Poppy Playtime
Shared: Horror · Psychological Horror · Indie

SILENT HILL: Townfall
Shared: Horror · Psychological Horror · Action