In 1990 there was a Nintendo competition called Powerfest 1990. Inspired by the movie "The Wizard" (Not the wizard of oz). The game is SMB collect 50 coins fast, level 1 of rad racer, and tetris high score. Winners got there own custom version of the cart, worth between 15,000 and 25,000. (gray) Then in Nintendo Power 16 gold carts were given away which are even more rare ranging from 20,000 to 30,000. There are only two current known people to have there hands on it. The Angry Video Game Nerd. (Gray) and Pat the NES Punk. (Gold)