This was just brought to my attention, and I’m pretty stoked! I haven’t actually looked at the source or done much in the way of investigation, but if it’s legit, then this is really, really exciting. 🙂
Maybe not as exciting as porting Unreal 3 to the web, but, well, I’m old-school. 😀
UPDATED: Thanks everybody for alerting me to the broken link. Fixed it now.