Back in the 1980's, Dutch developer John Vanderaart (aka DRJ, also known as Doctor John) programmed games for the Commodore 64, Sinclair ZX Spectrum and MSX computers, with his most famous games being text adventures. He also wrote action games and educational software and founded Radarsoft with some of his fellow students which released his first games and a few of the more successful games were released internationally including the shooter Eindeloos/Endless