Games like Demolish & Build 2018
Games like Demolish & Build 2018 include BeamNG.drive, Garry's Mod, Car Mechanic Simulator 2018, Teardown, and Brick Rigs. We matched them by the tags players give Demolish & Build 2018 on Steam (Simulation, Indie, Destruction, Multiplayer, and Building): closest matches first, and among equally close ones the better-known games.

BeamNG.drive
Shared: Simulation · Destruction · Physics

Garry's Mod
Shared: Multiplayer · Building · Physics

Car Mechanic Simulator 2018
Shared: Simulation · Automobile Sim · Multiplayer

Teardown
Shared: Destruction · Multiplayer · Indie

Brick Rigs
Shared: Destruction · Multiplayer · Building

Wreckfest
Shared: Destruction · Simulation · Multiplayer

My Summer Car
Shared: Simulation · Automobile Sim · Building

House Flipper
Shared: Simulation · Multiplayer · Building

Assetto Corsa
Shared: Simulation · Multiplayer · Automobile Sim

City Car Driving
Shared: Simulation · Automobile Sim · Multiplayer

American Truck Simulator
Shared: Simulation · Automobile Sim · Driving

Besiege
Shared: Simulation · Destruction · Building

Stardew Valley
Shared: Multiplayer · Simulation · Indie

Space Engineers
Shared: Simulation · Building · Sandbox

People Playground
Shared: Simulation · Destruction · Physics

Supermarket Simulator
Shared: Simulation · Multiplayer · Singleplayer

CarX Drift Racing Online
Shared: Simulation · Multiplayer · Physics

Euro Truck Simulator 2
Shared: Simulation · Automobile Sim · Driving

Gold Mining Simulator
Shared: Simulation · Indie · Singleplayer

SnowRunner
Shared: Simulation · Multiplayer · Automobile Sim

Euro Truck Simulator
Shared: Simulation · Automobile Sim · Multiplayer

Gas Station Simulator
Shared: Simulation · Building · Singleplayer

Turbo Dismount™
Shared: Simulation · Destruction · Physics

Scrap Mechanic
Shared: Building · Multiplayer · Sandbox