Nintendo 64 Tilt Pak Rumble and Motion Sensing Pak Sensitivity Calibration allows you to customize movement so as to enhance control of the game action. Customized Positioning puts the controller at your preferred angle of play for added comfort and more realistic play. Variable Rumble Force gives you three modes of play: standard rumble, heavy rumble and rumble off. Turbo and Slow Mode allows you to customize fire buttons to maximize play. Tilt Pak enhances game play for all Nintendo 64 controllers on all Nintendo 64 games.