Epic and Nvidia have shown Unreal Engine 3 - the powerful engine behind games like Gears of War and Infinity Blade - running on a Windows 8 tablet.

At the IFA conference in Berlin, the technology duo showed Epic Citadel (a free tech demo that's also available on iOS or in your browser) running on the newly announced Asus Vivo Tab RT.

Windows RT tablets are the cheaper, ARM-powered tablets that will go head-to-head with the iPad and Android slates. Unreal Engine 3 will also be available on the more expensive Windows 8 tablets, which use Intel chipsets.

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"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," Mark Rein, vice president of Epic Games, said.

Windows RT code is available to licensees from Epic now. Hopefully, that will give developers enough time to get Unreal Engine 3-powered games on the Windows Store in time for the Windows RT launch on October 26th.

If there's one game we want to see running on our flashy new Windows tablet come October, it's iOS slash-'em-up Infinity Blade II.

We reached out to developer Chair to see if there's any chance of seeing this game on Windows 8. According to one of the firm's reps, Chair "has no new announcements to make regarding the Infinity Blade series at this time". Boo. Spoilsports.