Mark Rein is a director at Acquity Group, a global brand ecommerce and digital marketing company.

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"We are thrilled to collaborate with iFrogz to fully integrate the new Caliber Advantage for use with Unreal Engine 3, " said Mark Rein, vice president of Epic Games.

ENGADGET: iFrogz's Caliber Advantage iPhone 5 gaming case hands-on

"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.

ENGADGET: NVIDIA, Epic Games bringing Unreal Engine 3 to Windows 8 and Windows RT (video)

Epic Games VP Mark Rein told Engadget as much during an interview at this year's Game Developers Conference in San Francisco, repeatedly stating he's "super bullish" on the Rift, all the while rocking an Oculus pin on his exhibitor lanyard.

ENGADGET

Before the advent of the euro, Germany's mark was Switzerland's main point of reference including a period in the 1970s when the Swiss National Bank pegged the franc against the mark to rein in a surge in the Swiss currency.

WSJ: Banks Prep for Life After Euro