Games like Falling Cubes
Games like Falling Cubes include Universe Sandbox, Kerbal Space Program, Universe Sandbox, Teardown, and SPORE™. We matched them by the tags players give Falling Cubes on Steam (Sandbox, Simulation, Science, God Game, and Experimental): closest matches first, and among equally close ones the better-known games.

Universe Sandbox
Shared: Sandbox · Simulation · Science

Kerbal Space Program
Shared: Simulation · Sandbox · Science

Universe Sandbox
Shared: Sandbox · Simulation · Science

Teardown
Shared: Sandbox · Physics · Voxel

SPORE™
Shared: Sandbox · God Game · Simulation

Garry's Mod
Shared: Sandbox · Physics · Simulation

Totally Accurate Battle Simulator
Shared: Sandbox · Simulation · Physics

PC Building Simulator
Shared: Simulation · Sandbox · Education

People Playground
Shared: Sandbox · Physics · Simulation

BeamNG.drive
Shared: Simulation · Sandbox · Physics

Townscaper
Shared: Sandbox · Experimental · Simulation

Goat Simulator
Shared: Simulation · Sandbox · Physics

House Flipper
Shared: Simulation · Sandbox · Relaxing

PowerWash Simulator
Shared: Simulation · Sandbox · Casual

WorldBox - God Simulator
Shared: Sandbox · Simulation · God Game

Sand:box
Shared: Sandbox · Simulation · God Game

Planet Coaster
Shared: Simulation · Sandbox · Relaxing

Besiege
Shared: Sandbox · Simulation · Physics

Species: Artificial Life, Real Evolution
Shared: Sandbox · Simulation · God Game

Planet Coaster 2
Shared: Sandbox · Simulation · God Game

SpaceEngine
Shared: Sandbox · Science · 3D

Cooking Simulator
Shared: Simulation · Sandbox · Physics

Goat Simulator 3
Shared: Sandbox · Simulation · Physics

Brick Rigs
Shared: Sandbox · Simulation · Physics