Games like IncrediMarble - Sandbox Mode
Games like IncrediMarble - Sandbox Mode include Mini Motorways, Gas Station Simulator, Garry's Mod, Startup Company, and House Flipper. We matched them by the tags players give IncrediMarble - Sandbox Mode on Steam (Casual, Simulation, Indie, Early Access, and Physics): closest matches first, and among equally close ones the better-known games.

Mini Motorways
Shared: Simulation · Casual · Management

Gas Station Simulator
Shared: Simulation · Casual · Management

Garry's Mod
Shared: Casual · Physics · Building

Startup Company
Shared: Simulation · Casual · Management

House Flipper
Shared: Simulation · Casual · Building

Game Dev Tycoon
Shared: Simulation · Indie · Casual

Paralives
Shared: Simulation · Indie · Building

Two Point Hospital
Shared: Simulation · Management · Building

Cities: Skylines II
Shared: Simulation · Building · Management

Planet Coaster
Shared: Simulation · Management · Building

Potion Craft: Alchemist Simulator
Shared: Simulation · Indie · Relaxing

Tavern Master
Shared: Simulation · Management · Indie

Megaquarium
Shared: Casual · Simulation · Building

My Dream Setup
Shared: Simulation · Casual · Building

Train Station Renovation
Shared: Casual · Simulation · Indie

Two Point Museum
Shared: Casual · Simulation · Building

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

Game Corp DX
Shared: Simulation · Indie · Management

Retro Rewind - Video Store Simulator
Shared: Simulation · Casual · Management

DAVE THE DIVER
Shared: Casual · Management · Relaxing

Stardew Valley
Shared: Simulation · Relaxing · Indie

Cities: Skylines
Shared: Simulation · Management · Building

Mountain
Shared: Simulation · Casual · Indie

Townscaper
Shared: Casual · Building · Simulation