Phun Algodoo ~upd~ Jun 2026

He called it (a play on "physics" and "fun").

– if you mention these two words together to anyone who grew up browsing the internet in the late 2000s or early 2010s, you will likely be met with a nostalgic sigh. For millions of students, hobbyists, and aspiring engineers, Phun and its successor, Algodoo , represented the first time they could play with the laws of physics without needing a degree in mathematics. phun algodoo

What made Phun revolutionary was the "Scribble" tool. Unlike complex CAD software where you define vertices and constraints via menus, Phun let you simply drag your mouse to draw a circle or a polygon. The "auto-simplify" function would instantly convert your chicken-scratch drawing into a smooth, functional physical object. He called it (a play on "physics" and "fun")

Started as a school project by Emil Ernerfeldt. It quickly gained a massive online community due to its intuitive "click-and-drag" mechanics. What made Phun revolutionary was the "Scribble" tool