Check the listing for details. official Nintendo 64 Jumper Pak .. Condition: Used. Listed at 25.99 USD. The official Nintendo 64 Jumper Pak is a memory card and expansion pack designed specifically for the Nintendo 64 console. Manufactured by Nintendo, the Jumper Pak allows players to enhance their gaming experience by providing additional memory capacity and expansion capabilities. This accessory is essential for gamers looking to unlock new features and content in their favorite Nintendo 64 games.