Enhance your gaming experience with the Rumble Pak for Nintendo 64 from ResaleFirm. This external attachment is compatible with both OEM and 3rd party controllers, and it works by adding vibration feedback to your gameplay. Whether you're playing solo or with friends, this gray plastic attachment is a perfect addition to your N64 setup. The Rumble Pak is easy to connect via controller attachment and comes with a 6-month manufacturer warranty. It's compatible with all Nintendo 64 games and accessories and can personalize your gaming experience. Get ready to feel every bump, crash, and explosion with the Rumble Pak for Nintendo 64. Batteries are not included.