Games like Doors
Games like Doors include Portal 2, Portal, LIMBO, Quantum Conundrum, and FEZ. We matched them by the tags players give Doors on Steam (Puzzle, Platformer, Puzzle Platformer, Casual, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Platformer · Puzzle · Singleplayer

Portal
Shared: Puzzle · Puzzle Platformer · Singleplayer

LIMBO
Shared: Puzzle · Puzzle Platformer · Platformer

Quantum Conundrum
Shared: Puzzle · Puzzle Platformer · Platformer

FEZ
Shared: Puzzle · Platformer · Singleplayer

Defy Gravity Extended
Shared: Platformer · Puzzle Platformer · Puzzle

Braid
Shared: Puzzle · Puzzle Platformer · Platformer

Viewfinder
Shared: Puzzle · Puzzle Platformer · Singleplayer

Poppy Playtime
Shared: Puzzle · Singleplayer · First-Person

Buckshot Roulette
Shared: Strategy · Singleplayer · First-Person

Little Nightmares
Shared: Puzzle Platformer · Puzzle · Singleplayer

Mini Motorways
Shared: Casual · Puzzle · Strategy

EDGE
Shared: Puzzle · Puzzle Platformer · Platformer

A Story About My Uncle
Shared: Singleplayer · Platformer · First-Person

Mini Metro
Shared: Puzzle · Strategy · Singleplayer

Climb The Backrooms
Shared: Platformer · Puzzle · Casual

Moncage
Shared: Puzzle · Casual · Singleplayer

Moonleap
Shared: Puzzle · Puzzle Platformer · Platformer

Refunct
Shared: Puzzle Platformer · Platformer · 3D Platformer

Zup! S
Shared: Puzzle · Casual · Singleplayer

INSIDE
Shared: Puzzle Platformer · Singleplayer · Puzzle

Shady Part of Me
Shared: Puzzle · Platformer · Singleplayer

Trine 2: Complete Story
Shared: Puzzle Platformer · Platformer · Puzzle

Monument Valley
Shared: Puzzle · Casual · Singleplayer