Nintendo World Championships Gold [Nintendo NES] – Price: $18,000

In 1990 Nintendo held the first of their video game competitions in the early 90’s. It was similar to the Wizard movie with a grand champion Nintendo player named after preliminaries and a final tournament. The cartridge consists of Super Mario Bros, Rad Racer, and Tetris and allows only 6 minutes of gameplay before awarding a total score.

After the competition was finished Nintendo made 26 gold colored cartridges to give away as part of a promotion in their Nintendo Power magazine. There are only 13 known cartridges so there are 13 more of them that were thrown away or are sitting in an attic somewhere just waiting to be found.