Algodoo — Phun

The real longevity of phun algodoo comes from the Algodoo Fun online forum (originally the Phun Forum on Phunland). Users upload ".phn" or ".alg" files containing:

The Hinge is the most important tool in Algodoo.

If you just searched "phun algodoo" because you saw a cool TikTok of a marble machine, here is your 10-minute starter guide: phun algodoo

The story begins in 2007 at Umeå University in Sweden. A master's student in Physics, Emil Ernerfeldt, wanted to create a piece of software that was equal parts educational tool and addictive toy. His goal was to allow users to draw shapes, hinges, chains, and motors with a mouse, then watch those objects react to gravity, friction, and restitution in real-time.

He called it Phun (a play on "physics" and "fun"). The real longevity of phun algodoo comes from

Algodoo is a 2D physics simulation app where you can build scenes with shapes, joints, fluids, light, and sensors, then watch them interact under gravity, friction, air resistance, and collisions. It’s designed to be intuitive: draw objects, assign materials, connect parts with hinges or springs, and press play to see what happens.

In 2023/2024, the software is technically "legacy," but far from dead. Can you still get Phun

Can you still get Phun? Yes, abandonware archives (like Internet Archive or GitHub) host Phun Beta 5.28. However, it will not run on modern MacOS (Apple Silicon) without emulation (Rosetta 2). Windows 10/11 runs Phun fine, but Algodoo is much more stable.