Games like Cubin II
Games like Cubin II include Portal, Portal 2, Mirror's Edge™ Catalyst, Mirror's Edge™, and Human Fall Flat. We matched them by the tags players give Cubin II on Steam (Puzzle Platformer, 3D Platformer, Puzzle, Action, and Sci-fi): closest matches first, and among equally close ones the better-known games.

Portal
Shared: Puzzle Platformer · Puzzle · 3D Platformer

Portal 2
Shared: Puzzle · Puzzle Platformer · Platformer

Mirror's Edge™ Catalyst
Shared: 3D Platformer · Parkour · Action

Mirror's Edge™
Shared: 3D Platformer · Parkour · Puzzle

Human Fall Flat
Shared: Puzzle · Puzzle Platformer · Physics

Planet of Lana
Shared: Puzzle Platformer · Action · Puzzle

A Story About My Uncle
Shared: Parkour · 3D Platformer · Adventure

LIMBO
Shared: Puzzle Platformer · Puzzle · Platformer

Viewfinder
Shared: Puzzle Platformer · Puzzle · Physics

The Talos Principle 2
Shared: Puzzle · Puzzle Platformer · Sci-fi

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

Refunct
Shared: 3D Platformer · Puzzle Platformer · Parkour

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

Supraland
Shared: Puzzle Platformer · Puzzle · Physics

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

Tomb Raider IV-VI Remastered
Shared: Action · Puzzle · 3D Platformer

Trine 3: The Artifacts of Power
Shared: Puzzle Platformer · 3D Platformer · Puzzle

Defy Gravity Extended
Shared: Puzzle Platformer · Puzzle · Platformer

DeadCore
Shared: Action · Platformer · 3D Platformer

Clustertruck
Shared: Action · 3D Platformer · Parkour

The Pedestrian
Shared: Puzzle Platformer · Puzzle · Platformer

BONEWORKS
Shared: Action · Physics · Puzzle

Unravel
Shared: Puzzle · Action · Puzzle Platformer

Bomb Rush Cyberfunk
Shared: 3D Platformer · Action · Parkour