They revealed it a while back, but following their many presentations at GDC 2012 Epic Games continue conquering new frontiers, with the proof-of-concept Epic Citadel demo now publicly available for your interactive in-browser pleasure running in Adobe Flash at the Unreal Engine site.

Shacknews reports on a discussion with Epic boss Mark Rein, who explains that while there is undoubtedly a penalty in CPU performance when running the demo in flash, they have achieved an respectable 70% efficiency and hope to be able to get their ridiculously impressive Samaritan demo running in Flash next.

Head over to unrealengine.com to try the demo for yourself, or watch the video below for the latest feature showcase of Unreal Engine 3.