Games like +PROTECTUS-
Games like +PROTECTUS- include Portal 2, Mind Over Magnet, The Pedestrian, LIMBO, and Portal. We matched them by the tags players give +PROTECTUS- on Steam (Puzzle, Space, Logic, Robots, and Adventure): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Puzzle · Platformer · Adventure

Mind Over Magnet
Shared: Puzzle · Robots · Adventure

The Pedestrian
Shared: Puzzle · Logic · Platformer

LIMBO
Shared: Puzzle · Platformer · Adventure

Portal
Shared: Puzzle · Puzzle Platformer · 3D Platformer

Outer Wilds
Shared: Space · Puzzle · Adventure

COCOON
Shared: Puzzle · Adventure · Space

Defy Gravity Extended
Shared: Puzzle · Space · Platformer

The Turing Test
Shared: Puzzle · Space · Adventure

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

Little Nightmares
Shared: Adventure · Puzzle · Puzzle Platformer

A Story About My Uncle
Shared: Adventure · Puzzle · Platformer

FEZ
Shared: Puzzle · Platformer · Adventure

Neva
Shared: Adventure · Puzzle · Platformer

Out There Somewhere
Shared: Puzzle · Platformer · Adventure

Stray
Shared: Adventure · Puzzle · Robots

Planet of Lana
Shared: Puzzle · Adventure · Platformer

The Last Campfire
Shared: Puzzle · Adventure · Indie

ElecHead
Shared: Puzzle · Platformer · Adventure

Viewfinder
Shared: Puzzle · Adventure · Puzzle Platformer

BEEP
Shared: Adventure · Puzzle · Platformer

Braid
Shared: Puzzle · Platformer · 2D Platformer

Little Nightmares II
Shared: Puzzle · Adventure · Platformer

Creepy Tale
Shared: Puzzle · Adventure · Platformer