Games like Ghost Simulator
Games like Ghost Simulator include Roadwarden, The Life and Suffering of Sir Brante, Little Nightmares, Tales of the Black Forest, and The Witcher 3: Wild Hunt — Remastered. We matched them by the tags players give Ghost Simulator on Steam (Adventure, RPG, Gothic, Horror, and Interactive Fiction): closest matches first, and among equally close ones the better-known games.

Roadwarden
Shared: RPG · Adventure · Text-Based

The Life and Suffering of Sir Brante
Shared: RPG · Interactive Fiction · Choose Your Own Adventure

Little Nightmares
Shared: Adventure · Horror · Atmospheric

Tales of the Black Forest
Shared: RPG · Adventure · Horror

The Witcher 3: Wild Hunt — Remastered
Shared: RPG · Adventure · Atmospheric

Little Nightmares II
Shared: Adventure · Horror · Singleplayer

Stories Untold
Shared: Adventure · Horror · Text-Based

Gothic 1 Remake
Shared: Adventure · RPG · Gothic

Stray
Shared: Adventure · Atmospheric · Singleplayer

Look Outside
Shared: RPG · Horror · Adventure

To the Moon
Shared: Adventure · Indie · RPG

Pocket Mirror ~ GoldenerTraum
Shared: RPG · Adventure · Horror

Fallout 4
Shared: RPG · Adventure · Singleplayer

Firewatch
Shared: Adventure · Atmospheric · Singleplayer

Suzerain
Shared: Choose Your Own Adventure · Interactive Fiction · RPG

Darkwood
Shared: Adventure · Horror · RPG

Vampire: The Masquerade - Bloodlines
Shared: RPG · Horror · Singleplayer

Kingdom Come: Deliverance
Shared: RPG · Adventure · Singleplayer

鬼谷八荒 Tale of Immortal
Shared: RPG · Singleplayer · Adventure

Of Ash And Steel
Shared: Gothic · Adventure · RPG

Finding Paradise
Shared: Adventure · RPG · Interactive Fiction

Until Dawn™
Shared: Adventure · Horror · Choose Your Own Adventure

INSIDE
Shared: Horror · Adventure · Atmospheric

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