So a small hobby of mine is to keep an eye out for open source projects similar to garrysmod. I stumbled across this promising app today,
OpenSim. It's got a lot of active developers which is always a good thing.
It's second life'ish but gets the job done. Maybe this is a suitable platform for UU?
![Smiley :)](https://forums.ulyssesmod.net/Smileys/default/smiley.gif)