I think there's one thing we should be looking for that everyone's ignoring: a classic will be loved by people who were not around at the time. Anything else is just retro or cult classic.
Few if any of the HD console games will be considered classics for this reason, and even most of the Nintendo games being mentioned here will not. Very few games meet this standard today, but they are all identifiable as classics.
A game I'm developing with some friends:
www.xnagg.com/zombieasteroids/publish.htm
It is largely a technical exercise but feedback is appreciated.







