UE4: <iframe width="560" height="315" src="http://www.youtube.com/embed/OZmRt8gCsC0" frameborder="0" allowfullscreen></iframe> <iframe width="560" height="315" src="http://www.youtube.com/embed/MOvfn1p92_8" frameborder="0" allowfullscreen></iframe> The demo itself is OK (could have been better, maybe better art mostly), but the walkthrough is pretty great. Not so exciting for the gamer, but UE4 seems to greatly improve productivity for game development (or I'd assume it does...never worked with any of this stuff personally, but looks quite a bit better than previous engine demos I've seen). Developers should have some good tools for next-gen. Or even current-gen I guess...don't see why those tool changes couldn't work for 360/PS3/WiiU and other devices (just won't produce graphics like shown).