If you thought Mozilla importing the Unreal Engine 3 onto Firefox was impressive, just wait until you get a load of what they’ve done with Unreal Engine 4. Less than a year after Mozilla showed off its successful port of the gaming engine behind the latest Bioshock and Mass Effect games into its web browser, the organization has come back with another video that gives us the first glimpse of its port of Unreal Engine 4. The video gives a brief two-minute tour of areas in the games Epic’s Soul and Swing Ninja and they look nothing short of stunning. Of course, this trailer is only one short little demonstration and we still don’t know whether Mozilla has solved a lot issues with latency and long load times that it was dealing with at this time last year. The full video is posted below.