Algodoo Alternatives

Garry's Mod is a Sandbox Game based around the idea of building. Unlike most other games there aren't any objectives - you can't lose and you definitely can't win. Doesn't work on MacOS 11.15 or higher.

Simphy is a simulation software to create 2D and 3D simulations with easy drag and drop options. You can create different types of bodies inside its physics world with different parameters like restitution, friction, velocity etc.

The Powder Toy is a desktop version of the classic 'falling sand' physics sandbox game, it simulates air pressure and velocity as well as heat!.

Crayon Physics Deluxe is a 2D physics puzzle / sandbox game, in which you get to experience what it would be like if your drawings would be magically transformed into real physical objects. Solve puzzles with your artistic vision and creative use of physics.

OE-Cake, OE-CAKE! or OE Cake is a 2D fluid physics sandbox which was used to demonstrate the Octave Engine fluid physics simulator created by Prometech Software Inc.

Physion can be used to create interactive physics simulations for fun or educational purposes.

Robots vs Magic has always been cool. Play as the awesome droids and take down that pesky wizard in this side defense game. Build and upgrade your army by collecting strategically placed crystals, but don't let the enemy get their hands on them!

iPhysics Sandbox is a simplistic physics sandbox (go figure). Depending on your personal setting configuration, its possible to get iPhysics engine to calculate every little attribute of every little object.

A highly customisable virtual stressball and physics sandbox about mutilating ragdolls in various ways using an overwhelming amount of items and other tools.

Enjoy the fastest and most complete open sandbox app. No adverts and rotates :).