Controls: On desktop WASD to move, move mouse or arrow keys to look around, space to place block. On mobile, move device to look around, one finger touch on the bottom of the screen to go forward, two to go back, tap on the top to place a block.

Browser support could be iffy or partial.

Get a few other people to go on with you. You should be able to see them and their actions real time.

I haven't done significant load testing, so it may get slow.

Broken for me in Firefox.

Fixed!