Finally the Rockfire Unipad. I know I've seen this controller before, and I have- it seems these were made under a number of names and for a number of systems... including the 3DO again at some point.
Have a look!
Reveal RA455, this time with start/select buttons.
Logic3 for the 3DO.
Creative Labs for the 3DO.
Weird how many of these oddball controllers wound up as accessories for the 3DO.