NVIDIA testedthe Unreal Engine 3 demo Epic Citadel on a Windows RT tablet powered by their Tegra technology.

They tested it at the ASUS Vivo Tab RT press conference which was held at IFA 2012 in Berlin. This was the first public showing of an Unreal Engine 3-based application on the Windows RT platform.

Porting Unreal Engine 3 to Windows 8 and Windows RT represents a joint effort by NVIDIA and Epic, and was made available to developers

Developed none other than by Epic Games, creators of blockbuster gaming franchises such as Gears of War (Xbox 360) and Infinity Blade (iOS), Unreal Engine 3 is considered a category leader with more than 20 technology awards. It operates on nine platforms, with more than 20 integrated technologies and has been licensed for more than 225 game titles.

This is a big breakthrough for the Windows ecosystem as not only is one of the top game engines for developers to begin working with, it is also the full PC implementation. This gives developers unprecedented support for porting PC and Xbox games to a mobile platform, and vice versa.

“The Unreal Engine 3-powered ‘Epic Citadel’ demonstration for Windows RT tablets implements the full DirectX 9 pipeline, with shaders and materials, all running beautifully on Tegra 3,” said Mark Rein, vice president of Epic Games. “By porting the full engine as opposed to a modified mobile version, NVIDIA and Epic have made it easy for UE3 developers around the world to bring their best content to Windows RT, Windows 8 and NVIDIA’s Tegra 3 processor. Windows RT code is available to licensees from Epic now and we’re excited to see the great games they develop with it.”

This is just one of the technologies that NVIDIA is developing for the Windows RT platform.The Windows RT will launch on October 26, 2012.