I was perusing the local flea market this weekend when I spotted 2 boxes filled with about 40 demo discs for the 3do and CDI.
They were white discs with plain lettering with the name of the game and "For demonstration only" or something to that effect.
The discs were in plain jewel cases along with a few full games, but almost nothing looked complete. If anyone is interested in something like this, I could go back next weekend and see what's still there.
I can't really give any more info at this time. The discs looked to be in ok shape, but I couldn't tell you if "X" game was in there.