   machine spec?
  I'm working on a casual dungeon crawler, which I plan to eventually sell online myself. I've really been away from game development for the last couple of years and I'm trying to figure out what kind of minimum system requirements to aim for. Also how powerful is the typical computer for non hardcore gamers?   
  It's kinda hard to give you accurate numbers, but a good place to start is the steam hardware survey. Admittedly that will be biased toward the higher end of the market, but it should give you a general idea.   