Games like Fallen Cube
Games like Fallen Cube include Unpacking, Only Climb: Better Together, There Is No Game: Wrong Dimension, The Last Campfire, and A Little to the Left. We matched them by the tags players give Fallen Cube on Steam (Side Scroller, Precision Platformer, 3D Platformer, Incremental, and Puzzle): closest matches first, and among equally close ones the better-known games.

Unpacking
Shared: Puzzle · Cute · Relaxing

Only Climb: Better Together
Shared: Precision Platformer · 3D Platformer · Arcade

There Is No Game: Wrong Dimension
Shared: Puzzle · Point & Click · Indie

The Last Campfire
Shared: Puzzle · Cute · 3D Platformer

A Little to the Left
Shared: Puzzle · Point & Click · Cute

Smile For Me
Shared: Puzzle · Point & Click · Cute

Celeste
Shared: Precision Platformer · Indie · Cute

The Silent Age
Shared: Side Scroller · Point & Click · Puzzle

The Pedestrian
Shared: Side Scroller · Puzzle · 3D

Hello Neighbor
Shared: Sandbox · 3D Platformer · 3D

Hidden Folks
Shared: Puzzle · Point & Click · Indie

Zup!
Shared: Puzzle · Indie · Point & Click

Plantera
Shared: Incremental · Sandbox · Point & Click

Is This Seat Taken?
Shared: Puzzle · Cute · Relaxing

BIT.TRIP Presents... Runner2: Future Legend of Rhythm Alien
Shared: Side Scroller · Precision Platformer · Arcade

Zup! 3
Shared: Puzzle · Indie · Point & Click

Donut County
Shared: Puzzle · Cute · Indie

hololive Treasure Mountain
Shared: Puzzle · 3D Platformer · Arcade

!AnyWay!
Shared: Side Scroller · Precision Platformer · Sandbox

Human Fall Flat
Shared: Puzzle · Sandbox · Funny

Boxes: Lost Fragments
Shared: Puzzle · Point & Click · 3D

Monument Valley 3
Shared: Puzzle · Precision Platformer · 3D Platformer

Portal
Shared: Puzzle · 3D Platformer · Funny

Shelldiver
Shared: Incremental · Arcade · Relaxing