Games like Open The Doors
Games like Open The Doors include Human Fall Flat, Portal 2, Portal, Moncage, and Planet of Lana. We matched them by the tags players give Open The Doors on Steam (Casual, Action, Adventure, Puzzle, and Incremental): closest matches first, and among equally close ones the better-known games.

Human Fall Flat
Shared: Puzzle · Adventure · Action

Portal 2
Shared: Puzzle · First-Person · Puzzle Platformer

Portal
Shared: Puzzle · Puzzle Platformer · First-Person

Moncage
Shared: Casual · Puzzle · Adventure

Planet of Lana
Shared: Action · Puzzle Platformer · Puzzle

Berry Bury Berry
Shared: Incremental · 3D · Casual

LIMBO
Shared: Puzzle · Puzzle Platformer · Adventure

Pikuniku
Shared: Casual · Adventure · Puzzle

VLADiK BRUTAL
Shared: Action · Adventure · Casual

COCOON
Shared: Adventure · Puzzle · Puzzle Platformer

Donut County
Shared: Casual · Puzzle · Adventure

Zup! 2
Shared: Casual · Puzzle · Indie

BONEWORKS
Shared: Action · Puzzle · Adventure

Viewfinder
Shared: Puzzle · Puzzle Platformer · Adventure

Superliminal
Shared: Puzzle · First-Person · Adventure

Supraland
Shared: Adventure · Puzzle Platformer · Puzzle

How to Fish
Shared: Adventure · Indie · First-Person

A Story About My Uncle
Shared: Adventure · First-Person · Indie

PEAK
Shared: Adventure · First-Person · 3D

BEEP
Shared: Adventure · Action · Indie

Boxes: Lost Fragments
Shared: Puzzle · Casual · Adventure

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

Bendy and the Dark Revival
Shared: Action · Adventure · First-Person

RV There Yet?
Shared: Adventure · First-Person · Casual