Games like Mu Cartographer
Games like Mu Cartographer include Moncage, Antichamber, The Witness, FEZ, and Carto. We matched them by the tags players give Mu Cartographer on Steam (Indie, Puzzle, Exploration, Experimental, and Sandbox): closest matches first, and among equally close ones the better-known games.

Moncage
Shared: Puzzle · Indie · Experimental

Antichamber
Shared: Puzzle · Indie · Exploration

The Witness
Shared: Puzzle · Exploration · Indie

FEZ
Shared: Puzzle · Indie · Exploration

Carto
Shared: Indie · Puzzle · Exploration

Terraria
Shared: Sandbox · Exploration · Indie

Blue Prince
Shared: Puzzle · Exploration · Indie

COCOON
Shared: Puzzle · Indie · Exploration

Outer Wilds
Shared: Exploration · Puzzle · Indie

Chants of Sennaar
Shared: Puzzle · Indie · Exploration

Pony Island
Shared: Indie · Puzzle · Experimental

Manifold Garden
Shared: Puzzle · Exploration · Experimental

Murders on the Yangtze River
Shared: Puzzle · Indie · Exploration

Human Fall Flat
Shared: Puzzle · Sandbox · Indie

Big Walk
Shared: Puzzle · Exploration · Sandbox

ANIMAL WELL
Shared: Puzzle · Exploration · Indie

Gorogoa
Shared: Puzzle · Indie · Exploration

Don't Starve
Shared: Indie · Sandbox · Exploration

OneShot
Shared: Indie · Puzzle · Exploration

Townscaper
Shared: Experimental · Sandbox · Indie

FAR: Lone Sails
Shared: Exploration · Indie · Puzzle

Obduction
Shared: Puzzle · Indie · Exploration

The Exit 8
Shared: Puzzle · Exploration · Indie

Little Inferno
Shared: Indie · Puzzle · Sandbox