Games like Matanga
Games like Matanga include We Happy Few, The Forest, Outlast, The Beast Inside, and Darkwood. We matched them by the tags players give Matanga on Steam (Action, Adventure, Indie, Horror, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

We Happy Few
Shared: Adventure · Action · Indie

The Forest
Shared: Horror · Adventure · Survival

Outlast
Shared: Horror · Psychological Horror · Adventure

The Beast Inside
Shared: Adventure · Horror · Action

Darkwood
Shared: Adventure · Horror · Action

Phasmophobia
Shared: Horror · Psychological Horror · Investigation

Poppy Playtime
Shared: Horror · Psychological Horror · Indie

Dark Deception
Shared: Horror · Psychological Horror · Action

Escape the Backrooms
Shared: Horror · Psychological Horror · Adventure

Paper Dolls: Original /
Shared: Adventure · Action · Horror

Blair Witch
Shared: Adventure · Horror · Indie

Bendy and the Dark Revival
Shared: Action · Horror · Adventure

The Outlast Trials
Shared: Horror · Psychological Horror · Action

Spooky's Jump Scare Mansion: HD Renovation
Shared: Adventure · Indie · Horror

Demonologist
Shared: Horror · Psychological Horror · Investigation

[Chillas Art] The Convenience Store
Shared: Indie · Horror · Adventure

The Coma 2: Vicious Sisters
Shared: Adventure · Horror · Indie

DreadOut
Shared: Adventure · Indie · Horror

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

Supernatural
Shared: Adventure · Horror · Action

Alan Wake
Shared: Action · Horror · Adventure

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

The Hat Man: Shadow Ward
Shared: Indie · Horror · Adventure

Little Nightmares II
Shared: Adventure · Horror · Psychological Horror