From 1977 to 2005, he served as co-writer and executive producer for all six Star Wars films, as well as the director of Star Wars Episode IV: A New Hope and its three prequels. He was also the creator and an executive producer of the television series Star Wars: The Clone Wars. Through Star Wars and his production company, Lucasfilm Ltd., Lucas has become one of the American film industry's most financially successful independent filmmakers, with an estimated network of $3.9 billion.[1]