Games like Marble Run
Games like Marble Run include Garry's Mod, Totally Accurate Battle Simulator, Poly Bridge, Space Engineers, and People Playground. We matched them by the tags players give Marble Run on Steam (Choose Your Own Adventure, Puzzle Platformer, Sandbox, Building, and Physics): closest matches first, and among equally close ones the better-known games.

Garry's Mod
Shared: Sandbox · Building · Physics

Totally Accurate Battle Simulator
Shared: Sandbox · Simulation · Physics

Poly Bridge
Shared: Building · Physics · Sandbox

Space Engineers
Shared: Sandbox · Building · Physics

People Playground
Shared: Sandbox · Physics · Simulation

Kerbal Space Program
Shared: Sandbox · Simulation · Physics

Poly Bridge 2
Shared: Building · Physics · Sandbox

BeamNG.drive
Shared: Simulation · Physics · Sandbox

Besiege
Shared: Sandbox · Simulation · Physics

Scrap Mechanic
Shared: Sandbox · Building · Physics

Car Mechanic Simulator 2018
Shared: Simulation · Building · Realistic

Cities: Skylines
Shared: Building · Simulation · Sandbox

Automation - The Car Company Tycoon Game
Shared: Sandbox · Building · Simulation

Planet Coaster
Shared: Building · Sandbox · Simulation

Cities: Skylines II
Shared: Sandbox · Building · Simulation

Out of Ore
Shared: Sandbox · Simulation · Choose Your Own Adventure

Kerbal Space Program 2
Shared: Sandbox · Building · Physics

Aviassembly
Shared: Building · Sandbox · Physics

PC Building Simulator
Shared: Simulation · Building · Sandbox

鬼谷八荒 Tale of Immortal
Shared: Sandbox · Simulation · Choose Your Own Adventure

Mon Bazou
Shared: Sandbox · Choose Your Own Adventure · Building

Fun with Ragdolls: The Game
Shared: Sandbox · Physics · Simulation

Teardown
Shared: Sandbox · Physics · Singleplayer

Cooking Simulator
Shared: Simulation · Sandbox · Realistic