A while back, Electronic Games Monthly parked a couple of kids in front of some old-time video games and asked them what they thought. The results were so hysterically, pants-wettingly funny, they've decided to do it again.
It was a tough call deciding which was the best bit to quote but I think this one just about sums it up:
EGM: With its five buttons and save-the-humans mission, Defender was one of the most complex games in arcade history.
Bobby: I've played this on my cell phone.