From Super Mario to Zelda: Why vintage video games are selling for more than $1million

They normally end up in a box in the attic. But now video game enthusiasts are shelling out incredible sums for hard-to-find retro game cartridges. An unopened copy of Nintendo's Super Mario 64 video game set a new world record when it recently sold at auction for $1.56m. It went under the hammer at Heritage Auctions in Dallas, Texas, who have not said who the anonymous big spender was. Super Mario 64 was the best selling game on the Nintendo 64, and the first to feature the beloved Mario character in 3D.