Panasonic Sampler (3DO Interactive Sampler CD # 1)
3DO Interactive Sampler CD # 2
3DO Interactive Sampler CD # 3
3DO Interactive Sampler CD # 4
3DO Game Guru
Some games have them built in, HELL has one but you can't get to it unless the memory is too full.
There is also the 3DO Storage Manager CD v2.1 for the FZ-EM256 Memory Unit. So if you have the Memory Unit you'll need that CD, the Game Guru will not work!
Ok so you checked the list and still need a disc? Or you have the FZ-EM256 Memory Unit but nothing to use that will turn it into a wonderful peice of hardware from a nice nicnac in your collection?
Well here's the solution: just download the image below and open it in WinRAR. No joke! Do it and you're memory problems will be solved.

Please note that if you use this on a Japanese model I've found that the memory manager CD will display all in Japanese text.
Here is the Help screen in English:
