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

People Playground
Shared: Sandbox · Physics · Simulation

BeamNG.drive
Shared: Simulation · Physics · Destruction

Garry's Mod
Shared: Sandbox · Physics · Building

Besiege
Shared: Simulation · Sandbox · Physics

WorldBox - God Simulator
Shared: Sandbox · Simulation · God Game

Kerbal Space Program
Shared: Simulation · Sandbox · Physics

Brick Rigs
Shared: Sandbox · Destruction · Building

Goat Simulator
Shared: Simulation · Sandbox · Physics

Space Engineers
Shared: Sandbox · Simulation · Building

Teardown
Shared: Sandbox · Physics · Destruction

Universe Sandbox
Shared: Simulation · Sandbox · Physics

Poly Bridge
Shared: Simulation · Physics · Building

Sand:box
Shared: Simulation · Sandbox · God Game

House Flipper
Shared: Simulation · Sandbox · Building

Demolish & Build 2018
Shared: Simulation · Destruction · Building

Turbo Dismount™
Shared: Simulation · Physics · Destruction

Wreckfest
Shared: Simulation · Destruction · Automobile Sim

Stardew Valley
Shared: Simulation · Sandbox · Relaxing

Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Physics

Planet Coaster
Shared: Simulation · Sandbox · Building

Townscaper
Shared: Sandbox · Building · Simulation

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

Hardspace: Shipbreaker
Shared: Simulation · Physics · Sandbox

CarX Drift Racing Online
Shared: Simulation · Sandbox · Physics