Games like Cubin
Games like Cubin include Portal, Portal 2, Half-Life 2, A Story About My Uncle, and Viewfinder. We matched them by the tags players give Cubin on Steam (Puzzle Platformer, 3D Platformer, Puzzle, First-Person, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Portal
Shared: Puzzle Platformer · Puzzle · 3D Platformer

Portal 2
Shared: Puzzle · Singleplayer · First-Person

Half-Life 2
Shared: Action · Singleplayer · Sci-fi

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

Viewfinder
Shared: Puzzle Platformer · Puzzle · First-Person

The Talos Principle 2
Shared: Puzzle · Puzzle Platformer · First-Person

Superliminal
Shared: Puzzle · First-Person · Singleplayer

Supraland
Shared: Puzzle Platformer · First-Person · Singleplayer

Mirror's Edge™
Shared: First-Person · 3D Platformer · Singleplayer

BioShock Infinite
Shared: First-Person · Action · Singleplayer

The Talos Principle
Shared: Puzzle · First-Person · Sci-fi

Indiana Jones and the Great Circle
Shared: First-Person · Puzzle · Singleplayer

Quantum Conundrum
Shared: Puzzle Platformer · 3D Platformer · Puzzle

Black Mesa
Shared: First-Person · Action · Singleplayer

The Ball
Shared: Puzzle Platformer · 3D Platformer · Puzzle

Human Fall Flat
Shared: Puzzle · Puzzle Platformer · Physics

BONEWORKS
Shared: Action · Physics · Singleplayer

Cyberpunk 2077
Shared: Singleplayer · First-Person · Sci-fi

LIMBO
Shared: Puzzle Platformer · Puzzle · Singleplayer

Mirror's Edge™ Catalyst
Shared: 3D Platformer · First-Person · Puzzle Platformer

Little Nightmares
Shared: Puzzle Platformer · Singleplayer · Puzzle

Clustertruck
Shared: 3D Platformer · First-Person · Action

The Entropy Centre
Shared: Puzzle · First-Person · Sci-fi

Tomb Raider Game of the Year
Shared: Action · Singleplayer · Adventure