Open Source Gaming in Firefox with Unreal Engine 4

Last year there was a demo of Unreal Engine 3 running in Firefox at what was then called near native speeds.  What was considered near native speeds back then was only 40% of actual native speeds.  Now Mozilla and Epic have put more work into bringing you a console like experience in the web with open source technologies.  They currently have a demo of Unreal Engine 4 running in Firefox, and now the speeds are even closer to native.  This demo runs at 67% of native speeds and Mozilla is claiming they will make it even faster.  Mozilla points out you still have browser choice with this technology, they are just working on making it fast, especially on Firefox.  Imagine marketing a download quality game with just a web link, this is looking to be what the future is becoming.  Monster Madness was the first commercial game published on the web using Unreal Engine and the open source asm.js tech.  This asm.js way of bringing games to the net is great because it allows one version of the game to run on Windows, Mac, Linux, and any platform that complies with newer web standards.  If you want to check out the Unreal Engine 3 demo click here.  I can only find a video of the new demo.