Games like ACTION SANDBOX
Games like ACTION SANDBOX include People Playground, Garry's Mod, Brick Rigs, BeamNG.drive, and Besiege. We matched them by the tags players give ACTION SANDBOX on Steam (Sandbox, Simulation, Physics, Destruction, and Building): closest matches first, and among equally close ones the better-known games.

People Playground
Shared: Sandbox · Physics · Simulation

Garry's Mod
Shared: Sandbox · Physics · Building

Brick Rigs
Shared: Sandbox · Destruction · Building

BeamNG.drive
Shared: Simulation · Physics · Sandbox

Besiege
Shared: Sandbox · Simulation · Physics

Totally Accurate Battle Simulator
Shared: Sandbox · Simulation · Physics

Kerbal Space Program
Shared: Simulation · Sandbox · Physics

Goat Simulator
Shared: Simulation · Sandbox · Physics

The Sims™ 4
Shared: Simulation · Building · Sandbox

Space Engineers
Shared: Sandbox · Simulation · Building

Poly Bridge
Shared: Simulation · Physics · Building

WorldBox - God Simulator
Shared: Sandbox · Simulation · Destruction

Teardown
Shared: Sandbox · Physics · Destruction

The Sims™ 3
Shared: Simulation · Sandbox · Building

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

Terraria
Shared: Sandbox · 2D · Pixel Graphics

Prison Architect
Shared: Simulation · Sandbox · Building

Hardspace: Shipbreaker
Shared: Simulation · Physics · Sandbox

Scrap Mechanic
Shared: Sandbox · Building · Physics

Planet Coaster
Shared: Simulation · Sandbox · Building

Stardew Valley
Shared: Simulation · Pixel Graphics · Sandbox

Forts
Shared: Physics · Destruction · Sandbox

Graveyard Keeper
Shared: Simulation · Sandbox · Pixel Graphics

Noita
Shared: Physics · Sandbox · Pixel Graphics