He called it . The name was perfect. It was phun.
If you were a curious kid with a computer between 2008 and 2012, chances are you stumbled upon a bright, sandbox-style program where you could draw a circle, click "play," and watch it roll down a ramp you just sketched with your mouse. phun algodoo
That program was . Today, it lives on as Algodoo . He called it
At first glance, Algodoo looks like a toy—a colorful, 2D playground for bouncing balls and crashing cars. But after spending a decade away from it and coming back as an adult, I’ve realized something surprising: If you were a curious kid with a
Let’s dig into the history, the magic, and why you should download it right now. The story begins at Umeå University in Sweden. A master’s student named Emil Ernerfeldt wanted to create a real-time 2D physics sandbox that felt like drawing on a whiteboard—only everything you drew obeyed gravity, friction, restitution, and density.
Want a ramp? Scribble a line. Want a box? Draw a rectangle. Want water? Grab the fluid brush. Everything you create instantly has mass, collision, and reaction to forces.
Phun was a gift. Algodoo is that gift, polished and expanded. Whether you’re a teacher tired of static diagrams, a parent looking for screen time with substance, or just someone who wants to build a giant domino topple for no reason—