ALBUQUERQUE, N.M. (AP) — A documentary explores the decline of videogame giant Atari and the secret dumping of its flopped "E.T." game in a New Mexico landfill. [...] the film also is about Atari's rise and the pioneering mark it made on the gaming industry, said Gerhard Runken, VP of property development at digital agency Fuel Entertainment, which obtained the rights to excavate the landfill. Two years ago, Fuel approached Xbox Entertainment Studios about shooting a documentary of the excavation. While the documentary dives into the search and excitement of finding forgotten Atari games, it also tells the story of "E.T." game developer Howard Scott Warshaw.