The Nintendo World Championships (NWC) Gold cartridge for the Nintendo Entertainment System (NES) is one of the most valuable and rare video game collector's items in existence. Only 26 NWC Gold cartridges are known to exist, making them extremely rarer than the Gray variation. These cartridges were handed away as prizes in a separate Nintendo Power magazine sweepstakes, making them even rarer and more valuable. The NWC Gold cartridge is highly expensive since it has a one-of-a-kind combination of games and gameplay modes, including an exclusive version of Super Mario Bros. As a result, serious video game collectors, particularly those interested in Nintendo's history and early gaming tournaments, should own the cartridge. The NWC Gold cartridge's scarcity and unusual gameplay make it highly sought after by collectors, with single cartridges fetching hundreds of thousands of dollars at auction. It is regarded as one of the crown jewels of video game collecting, with its value projected to rise in the future.