U3_Firefox

Continuing on the advancements Mozilla has made with JavaScript to bring better gaming to browsers and mobile devices, they have now teamed up with Epic Games to bring the Unreal Engine 3 to the web. This port will enable developers to reach a larger market and cut costs. Expect to see ports of popular games running the Unreal engine to make their way on the web in due time. In the mean time, check out the video Mozilla put together for their announcement.

Source: Mozilla