Mission Stick
From Sega Retro
The Sega Mission Stick is an analog stick, with the usual Sega Saturn buttons (which can be flipped to the left or the right of the stick), as well as trigger buttons on the stick. Interestingly enough, there's an expansion connector on the bottom of the stick, as well as support for mounting something else on the opposite side of the stick from the button panel, so there's a possibility that an expansion for the controller was planned. As far as anyone knows, no expansion accessory was ever developed for the Mission Stick. It was also one of the more expensive Saturn control peripherals.
Because of design differences from the regular digital control pad, not all games will recognize the Mission Stick. Furthermore, certain games, such as Solar Eclipse will ignore custom button configurations.
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Physical Scans