Dallas (AFP) - A cartridge of Nintendo's classic video game "Super Mario 64" sets a world record, selling for $1.56 million (€1.32 million) after a 20% buyer's premium at the Dallas-based Heritage Auctions. The sale, the first ever of a game cartridge to surpass $1 million, came just two days after a sealed copy of "The Legend of Zelda", made for the old Nintendo NES console, sold for a then-record of $870,000.