Sky Render on 11 April 2008
I've not actually played most of the failed systems, but my vote would go for the Atari 5200. Everything about it suggests that it was just Atari's response to Colecovision and Intellivision, and a poor response at that. The failure rate for the controllers is monumental, the games are ultimately less impressive than the CV and IV, and the system's even bigger than a PS3 (and most of its size is taken up by nothing but air).
Sky Render - Sanity is for the weak.
