For the longest time, HTML5 was far behind Flash in terms of game development as it didn’t offer a native experience. Mozilla and others have been bridging that gap over the last year, however, and the non-profit’s latest move inspires more hope that HTML5 can deliver native gaming experiences sooner rather than later.

Mozilla and Epic Games announced at GDC that Unreal Engine 3 is now available to HTML5 developers. The epic achievement (pun so intended) was made possible through Mozilla’s work in developing “a highly-optimized version of JavaScript” that allows game developers to bring graphically intensive content to the Web.

To see it in action for yourself, check out this quick run through of Epic Citadel running on a Web browser:

It’s Mozilla’s hope that developers will use this to bring more visually striking, and maybe even AAA games, to the Web. Of course, HTML5 is still in its infancy and developer adoption is low. Still, it’s incredibly encouraging to see HTML5 progressing this fast especially when Flash only just got Unreal Engine 3 support at last year’s GDC.