The Coke Studios effort is interesting because there were no "private servers" developed at the time, unlike Habbo which had many, and there are Shockwave Xtras that no open runtime supports currently.
There's several attempts at a full runtime as well, that run in-browser.
Projector Rays (decompiler) really was the biggest release to date, and recently people have been really hacking at it, to some extent AI has helped to reverse engineer bytecode far as I can tell.
For anyone curious, one of the runtimes is called DirPlayer: