The M2 add on for the 3DO system. The Virtual Reality headset for the Atari Jaguar. The pippin.

Whatever happened to all this stuff. I mean I know that it got canned and never came out, but does anybody know any behind the scenes stories why these hardware units got canned?

Can anybody think of any other systems or add-ons that never made the prime time?

Can anybody list every single piece of vaporware?

Wasn't Hasbo going to come out with a system at one point?