A sealed copy of Super Mario Bros. has sold for $3 million at auction, making it the most expensive video game ever sold.
The game is from an early 1985 release and still has its original seal, which is extremely rare.
Although millions of copies of Super Mario Bros. were made, very few unopened copies from the first production runs still exist.
Experts say only a small number of sealed copies from this version are known.
The game was also in excellent condition, which helped increase its value.