Games like siX Planes
Games like siX Planes include COCOON, LIMBO, Papers, Please, PC Building Simulator, and Little Nightmares. We matched them by the tags players give siX Planes on Steam (Puzzle, Simulation, Puzzle Platformer, Education, and 3D): closest matches first, and among equally close ones the better-known games.

COCOON
Shared: Puzzle · Puzzle Platformer · Atmospheric

LIMBO
Shared: Puzzle · Puzzle Platformer · Atmospheric

Papers, Please
Shared: Simulation · Puzzle · Indie

PC Building Simulator
Shared: Simulation · Education · 3D

Little Nightmares
Shared: Puzzle Platformer · Atmospheric · Puzzle

Poly Bridge
Shared: Simulation · Puzzle · Singleplayer

Moncage
Shared: Puzzle · Atmospheric · Singleplayer

INSIDE
Shared: Puzzle Platformer · Atmospheric · Puzzle

Portal
Shared: Puzzle · Puzzle Platformer · Singleplayer

Car Mechanic Simulator 2021
Shared: Simulation · 3D · Education

The Last Campfire
Shared: Puzzle · Atmospheric · Singleplayer

Electrician Simulator
Shared: Simulation · Education · Singleplayer

Human Resource Machine
Shared: Puzzle · Simulation · Education

Librarian: Tidy Up the Arcane Library!
Shared: Puzzle · Simulation · Singleplayer

Portal 2
Shared: Puzzle · Puzzle Platformer · Singleplayer

Cyber Manhunt
Shared: Simulation · Puzzle · Indie

Planet of Lana
Shared: Puzzle Platformer · Puzzle · Atmospheric

Bridge Constructor Portal
Shared: Puzzle · Simulation · Level Editor

Poly Bridge 2
Shared: Puzzle · Simulation · Level Editor

Car Mechanic Simulator 2015
Shared: Simulation · Education · Puzzle

Braid
Shared: Puzzle · Puzzle Platformer · Indie

Unpacking
Shared: Puzzle · Simulation · Casual

Gorogoa
Shared: Puzzle · Atmospheric · Indie

Little Nightmares II
Shared: Puzzle · Atmospheric · Singleplayer