Cities feel amazingly alive – You thought Skyrim’s “Radiant” AI was impressive? Or if not impressive then at least a cut above the mindless mobs that tend to populate videogame worlds? Well, Witcher 3′s variation on the theme looked magnificently natural. Children shouted and played tag, adults walked and chatted, fires crackled, water wheels churned, etc, etc, etc. It was so palpably alive. Our presenter noted that NPCs react the all sorts of things, too: the time of day, weather, Geralt punching them - every valid and rational human concern. Afterward, I went to a demo of Dragon Age Inquisition, and the difference was night and day. DA’s denizens were stuck in their tracks like they were born and raised in a vat of quicksand. No sudden movements. Really just no… movements in general, actually.