Alan Walker is an Australian word puzzle developer with a background in computing. He created the popular Chihuahua Word Puzzle website, and then started this series of word puzzle books based on the same concept. He runs a number of other websites, including those hosting the Letterbox and Ozlip games. He has also created word games for mobile phones.
He has created websites featuring free electronic editions of books written by his parents: "No Sunlight Singing" (1960), a novel about Australian Aborigines, by Joe Walker; and "Solidarity Forever" (1972), about the life and times of Australian radical Percy Laidler, by Bertha Walker.
Alan Walker lives in Melbourne, where he was born in 1950.