Games like EXOTIUM - Episode 8
Games like EXOTIUM - Episode 8 include Mirror 2: Project X, Florence, Before Your Eyes, Donut County, and There Is No Game: Wrong Dimension. We matched them by the tags players give EXOTIUM - Episode 8 on Steam (Indie, Casual, Walking Simulator, Interactive Fiction, and Solitaire): closest matches first, and among equally close ones the better-known games.

Mirror 2: Project X
Shared: 3D · Interactive Fiction · Casual

Florence
Shared: Indie · Casual · Interactive Fiction

Before Your Eyes
Shared: Indie · Interactive Fiction · Walking Simulator

Donut County
Shared: Indie · Casual · Singleplayer

There Is No Game: Wrong Dimension
Shared: Indie · Casual · Singleplayer

To the Moon
Shared: Indie · Interactive Fiction · Singleplayer

Moncage
Shared: Casual · Indie · Singleplayer

WEBFISHING
Shared: Casual · Indie · 3D

Road 96: Mile 0
Shared: Interactive Fiction · Walking Simulator · 3D

The Beginner's Guide
Shared: Indie · Walking Simulator · Singleplayer

MUSYNX
Shared: Indie · Casual · Singleplayer

Game Dev Tycoon
Shared: Indie · Casual · Singleplayer

The Stanley Parable
Shared: Indie · Walking Simulator · Singleplayer

Liars Bar
Shared: Casual · Indie · 3D

Gorogoa
Shared: Indie · Casual · Singleplayer

A Bird Story
Shared: Indie · Interactive Fiction · Singleplayer

Mixtape
Shared: Walking Simulator · Singleplayer · Casual

Little Inferno
Shared: Indie · Casual · Singleplayer

Gone Home
Shared: Indie · Walking Simulator · Singleplayer

Sizeable
Shared: Casual · Indie · 3D

Mountain
Shared: Indie · Casual · Singleplayer

Firewatch
Shared: Walking Simulator · Indie · Singleplayer

Plague Inc: Evolved
Shared: Indie · Casual · Singleplayer

Golf With Your Friends
Shared: Casual · Indie · Singleplayer