Games like Cubes of Death
Games like Cubes of Death include Supraland, COCOON, Sonic Frontiers, Portal 2, and FAR: Lone Sails. We matched them by the tags players give Cubes of Death on Steam (Adventure, Singleplayer, PvE, Puzzle Platformer, and 3D Platformer): closest matches first, and among equally close ones the better-known games.

Supraland
Shared: Adventure · Puzzle Platformer · Singleplayer

COCOON
Shared: Adventure · Puzzle Platformer · Singleplayer

Sonic Frontiers
Shared: Adventure · 3D Platformer · Singleplayer

Portal 2
Shared: Singleplayer · Puzzle Platformer · 3D Platformer

FAR: Lone Sails
Shared: Adventure · Singleplayer · Exploration

Little Nightmares
Shared: Adventure · Singleplayer · Puzzle Platformer

The Last Campfire
Shared: Adventure · Singleplayer · Indie

Haste
Shared: 3D Platformer · Singleplayer · Adventure

Crimson Desert Enhanced
Shared: Singleplayer · Adventure · Exploration

Slime Rancher
Shared: Adventure · Singleplayer · Exploration

Stray
Shared: Adventure · Singleplayer · Exploration

Viewfinder
Shared: Puzzle Platformer · Singleplayer · Adventure

Seen
Shared: Singleplayer · Adventure · Indie

Portal
Shared: Puzzle Platformer · Singleplayer · 3D Platformer

Murders on the Yangtze River
Shared: Adventure · Puzzle Platformer · Indie

LIMBO
Shared: Puzzle Platformer · Adventure · Singleplayer

Hob
Shared: Adventure · Singleplayer · Puzzle Platformer

A Short Hike
Shared: Adventure · Exploration · Singleplayer

Dune: Awakening
Shared: Adventure · PvE · Singleplayer

Chained Together
Shared: Adventure · Puzzle Platformer · 3D Platformer

The Plucky Squire
Shared: Adventure · 3D Platformer · Puzzle Platformer

Firewatch
Shared: Adventure · Singleplayer · Exploration

Dungeons of Hinterberg
Shared: Adventure · Singleplayer · Exploration

Chants of Sennaar
Shared: Adventure · Singleplayer · Indie