Emil Ernerfeldt is a 23 year old Swedish programmer for Algoryx. Emil lives in Umeå, which is also where Algoryx is located. He made the '2D Physics Sandbox' Phun for his master thesis in about 6 months. Later on, Phun increased in popularity, and was transferred to Algoryx, a company founded by Emil's MSc supervisor Kenneth Bodin, and his colleagues from Umeå University.