A sealed cartridge of The Legend of Zelda for the old Nintendo NES console has sold for a world record sum of $870,000, auction house Heritage Auctions said in a statement Friday.The cartridge, dated to 1987, is still in its original packaging and trumps the previous world record sale of a video game — $660,000 for a 1986 Super Mario Bros cartridge sold in April — according to the auction house.The game was the “masterpiece” in a sale of 443 lots that runs until Sunday, Eric Bradley, spokesperson for the Dallas-based company, told AFP.The auction house has not revealed the identity of the buyer.Blending adventure, action and exploration in a magical universe, Zelda is one of the most significant titles in the history of video games and one of Nintendo’s best-known series.Retro video games have become increasingly popular with nostalgic collectors in recent years, driving up prices for old-school consoles and cartridges at auctions. 
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