Virtual World !! Gimme a little help please...

Hi Alll!!

I’d like to learn how to build a multiplayer 3D platform.

Can anybody tell me where i can find a simple Virtual World Open Source?
I would just navigate with other users with arrow keys; i don’t need a perfect avatar, just a rectangole for a simple test :wink:

I’d like to see the code and learn how to program with Java3D or others languages, importing an object with Blender 3D, and i will make all project under GNU Licence and sharing with all communities…

Location, Rome