So, Crackdown 3 might be the most impressive demo I've ever seen. We'll have a full preview up later today, but suffice it to say that all that bluster about "leveraging the Cloud" to bring hitherto unseen levels of physics-based destruction is totally accurate. That moment in the CG teaser trailer where an Agent collapses a building into another building to kill the naughty crime boss inside? You can do that. Easily. I've seen it happen. I have seen such things.