Games like Physics Playground
Games like Physics Playground include Goat Simulator, Garry's Mod, Totally Accurate Battle Simulator, People Playground, and PowerWash Simulator. We matched them by the tags players give Physics Playground on Steam (Casual, Indie, Physics, Sandbox, and Simulation): closest matches first, and among equally close ones the better-known games.

Goat Simulator
Shared: Simulation · Sandbox · Physics

Garry's Mod
Shared: Sandbox · Physics · Casual

Totally Accurate Battle Simulator
Shared: Sandbox · Simulation · Physics

People Playground
Shared: Sandbox · Physics · Simulation

PowerWash Simulator
Shared: Casual · Simulation · Relaxing

Kerbal Space Program
Shared: Physics · Sandbox · Simulation

Wobbly Life
Shared: Sandbox · Casual · Simulation

Slime Rancher
Shared: Open World · Sandbox · Casual

BeamNG.drive
Shared: Physics · Simulation · Sandbox

DrainSim
Shared: Casual · Simulation · Sandbox

Slime Rancher 2
Shared: Relaxing · Open World · Casual

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

Stardew Valley
Shared: Relaxing · Simulation · Sandbox

Townscaper
Shared: Casual · Sandbox · Relaxing

Human Fall Flat
Shared: Physics · Funny · Sandbox

Goat Simulator 3
Shared: Physics · Sandbox · Simulation

Passpartout: The Starving Artist
Shared: Casual · Indie · Simulation

SuchArt: Creative Space
Shared: Simulation · Sandbox · Physics

Turbo Dismount™
Shared: Physics · Simulation · Funny

Universe Sandbox
Shared: Sandbox · Simulation · Physics

Placid Plastic Duck Simulator
Shared: Casual · Physics · Relaxing

House Flipper
Shared: Simulation · Casual · Sandbox

Teardown
Shared: Physics · Sandbox · Indie

Space Engineers
Shared: Sandbox · Physics · Simulation