This is working multiplayer build where you can control your own character (the purple capsule) and see others. The problem is that I didn't design it well enough to have a smooth transition yet so people will look like they are increment and lagging. it's the best I can do in 4 hours of messing around. Only Windows build is available at the moment. Also note that the player limit is 20 people at the moment.
What syncs and works:
As shown in the images, I along with a group of testers had some fun stacking and messing around in it.