Now, what does Unreal Engine 3 arriving on Windows RT mean exactly? This is the graphical engine powering the best looking games in the mobile space right now - the Infinity Blade series for example. Actually that very same Epic Citadel demo shown on the Vivo Tab RT is what was shown before Infinity Blade launched on the iPad and iOS.
So this is definitely a great early sign for the bright future of Windows RT gaming. The demo below ran at between 35fps and 45fps, which is pretty smooth (everything north of 30fps appears smooth). Check it all out below.
source: nVidia via AnandTech