Unpublished Super Mario Bros. Duck Hunt cartridges discovered in Wisconsin

Intelligence Summary
- A remarkable find of 97 unpublished Super Mario Bros. Duck Hunt cartridges in Wisconsin raises questions about retro gaming history and value.
Briefly
In a warehouse in Waukesha, Wisconsin, 97 unpublished Super Mario Bros. Duck Hunt cartridges have been discovered. The cartridges were stored in a box that belonged to the seller’s grandfather, who worked for a precious metals recovery company. The discovery has sparked speculation about the value and history of retro gaming.
GAME-scanner analysis
This find is not just an interesting anecdote, but also has broader implications for the retro gaming community. The value of unpublished or rare cartridges can rise exponentially, especially as retro gaming continues to grow in popularity. That can fuel more speculation in the market, with collectors and investors trying to profit from the scarcity of these items. The claim that Nintendo wanted to sell these cartridges quickly rather than throw them away points to the value the publisher saw in them, even if they never reached the market.
What does this mean for players?
For gamers and collectors, this discovery suggests there may be more unpublished or rare games in circulation than previously thought. It could further fuel interest in retro gaming and drive up prices for other rare cartridges. It is also a reminder of the rich history of video games and how some pieces of that history have been lost or forgotten. The question remains, however, how these cartridges will be valued in the further early access development and whether they are actually playable in their current state.
Timeline
2026-07-29: The discovery of the 97 unpublished cartridges is announced.
Unknown: The seller’s grandfather acquires the cartridges through his work at a precious metals recovery company.
Unknown: The cartridges are kept for six years in the OneStopWonders store, run by collector Kevin Braun.