Games like Mini Mecum
Games like Mini Mecum include The Witness, The Stanley Parable, NaissanceE, The Exit 8, and Antichamber. We matched them by the tags players give Mini Mecum on Steam (Walking Simulator, Indie, Surreal, Philosophical, and Exploration): closest matches first, and among equally close ones the better-known games.

The Witness
Shared: Exploration · Indie · Colorful

The Stanley Parable
Shared: Indie · Walking Simulator · First-Person

NaissanceE
Shared: Indie · Walking Simulator · Exploration

The Exit 8
Shared: Walking Simulator · Exploration · Surreal

Antichamber
Shared: Indie · Surreal · Exploration

Firewatch
Shared: Walking Simulator · Adventure · Indie

Jazzpunk: Director's Cut
Shared: Indie · Surreal · Exploration

Cairn
Shared: Indie · Exploration · Stylized

Broken Reality
Shared: Indie · Surreal · Walking Simulator

PEAK
Shared: Exploration · Adventure · Physics

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

Viewfinder
Shared: Surreal · First-Person · Adventure

Obduction
Shared: Indie · Exploration · Adventure

Slime Rancher
Shared: Exploration · Adventure · Colorful

Before Your Eyes
Shared: Indie · Walking Simulator · First-Person

What Remains of Edith Finch
Shared: Walking Simulator · Exploration · Indie

The Unfinished Swan
Shared: Indie · Exploration · Surreal

The Talos Principle 2
Shared: Philosophical · Walking Simulator · Exploration

Chants of Sennaar
Shared: Indie · Adventure · Colorful

Journey
Shared: Indie · Walking Simulator · Exploration

Hypnagogia² 無限の夢 Boundless Dreams
Shared: Surreal · Exploration · Adventure

COCOON
Shared: Indie · Exploration · Adventure

Gone Home
Shared: Walking Simulator · Indie · Exploration

Superliminal
Shared: Surreal · First-Person · Physics