Tim Sweeney from Epic Games showed up at tonight's PlayStation Meeting to reveal that Unreal Engine 3 works on the NGP -- which shouldn't be much of a surprise, given that the device was shown running PS3 games, and UE3 runs on phones.

Speaking of phones, the game demonstrated was Dungeon Defenders, which is currently available for Android and iPhone. Sweeney also showed an updated version of the "Epic Citadel" tech demo.