I wonder if Retro will keep using Unreal Engine on Wii U. Surprisingly enough, that's actually the engine Metroid Prime 1 - 3 ran on (heavily modified UE2), as was recently uncovered. Kinda surprising that neither the engine nor Epic was mentioned anywhere in the credits, though. And I'd guess Epic would have loved to use those games to brag, as Metroid Prime 1 was the highest rated and probably the most beautiful Unreal Engine game when it was released.

MIND = BLOWN
Then... That bird demo... like I suspected....... AH!!!!