Long story short, it had long been urban legend that Atari buried thousands of copies of ET for the Atari 2600 after the game flopped. It's considered by many to be possibly the worst console game...ever.
Having had it myself, I can verify it was indeed awful. Worst ever? Not sure about that.
I wonder if they'll find any of the Swordquest games too?
Wii U Retail (Tuesday) • Just Dance 2014 (also on eShop) Wii Retail (Tuesday) • nothing Club Nintendo • Super Mario Kart (SNES; 150 coins until November 3) • ThruSpace (150 coins until November 3) Wii U Retail (Sunday)