Mozilla and Epic ported Unreal Engine 3 to the web

[…] Mozilla developed a highly-optimized version of JavaScript that supercharges a developer’s gaming code in the browser to enable visually compelling, fast, 3D gaming experiences on the Web. […] Today, we are excited to unlock this technology for high-performance games, by teaming up with Epic Games. By leveraging this new JavaScript optimization technology, Mozilla has been able to bring Epic’s Unreal Engine 3 to the Web.

Holy. Shit.

Obviously there’s hurdles to cross like load times, but this is an awesome step forward.