Games like Mu Complex
Games like Mu Complex include Chants of Sennaar, There Is No Game: Wrong Dimension, Replica, Hack 'n' Slash, and TIS-100. We matched them by the tags players give Mu Complex on Steam (Indie, Adventure, Hacking, Puzzle, and Programming): closest matches first, and among equally close ones the better-known games.

Chants of Sennaar
Shared: Adventure · Indie · Puzzle

There Is No Game: Wrong Dimension
Shared: Indie · Adventure · Puzzle

Replica
Shared: Indie · Hacking · Puzzle

Hack 'n' Slash
Shared: Indie · Adventure · Hacking

TIS-100
Shared: Indie · Puzzle · Programming

The Last Campfire
Shared: Adventure · Puzzle · Indie

LIMBO
Shared: Indie · Puzzle · Adventure

Samsara Room
Shared: Indie · Adventure · Puzzle

Brothers - A Tale of Two Sons
Shared: Adventure · Indie · Puzzle

Uplink
Shared: Indie · Hacking · Programming

Pikuniku
Shared: Indie · Adventure · Puzzle

Pony Island
Shared: Indie · Puzzle · Hacking

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

The Room Three
Shared: Adventure · Puzzle · Indie

The White Door
Shared: Indie · Adventure · Puzzle

COCOON
Shared: Adventure · Indie · Puzzle

Twelve Minutes
Shared: Indie · Adventure · Puzzle

EXAPUNKS
Shared: Hacking · Puzzle · Indie

Human Fall Flat
Shared: Puzzle · Adventure · Indie

The Room
Shared: Puzzle · Adventure · Indie

Little Nightmares
Shared: Adventure · Indie · Puzzle

Rusty Lake Paradise
Shared: Indie · Puzzle · Adventure

hack_me
Shared: Adventure · Hacking · Indie

Seen
Shared: Indie · Adventure · Puzzle