“E.T.” may have soared in the movies. But as a video game, it was an epic turkey. When electronics pioneer Atari rushed a game based on the 1982 Hollywood blockbuster to market for its then-dominant home consoles, it was a flop, compounded by the fact that the infant industry was hitting its first slump at the time. So Atari literally buried the project, dumping truckloads of unsold games in a desert landfill in New Mexico. And amid a decade of entertainment-industry disasters bookended by the movie “Heaven’s Gate” and Milli Vanilli, the “E.T.” game quickly faded into urban legend.