Well - as we are now on the topic of Second Life...There are also some existing game stuff in Second Life. eltee Statosky has a Zendo set. It is set out for play in Perry (SE corner I think). You can also get a free copy there.
I've been working on a fully scripted version of IceTowers for a while now. Not quite ready for play, but almost.
I joined the looney labs fan group in world. I'm Zarf Vantongerloo. Feel free to contact me in world.
- Mark