very nice.

suggestions:

1 - a stronger indicator of which point is you (the arrow at the beginning is not enough)

2 - control instructions (it wasn't obvious you had to use the keyboard arrows, also because of (1).

3 - if the room is crowded, the game will never start as long people keep joining. Put a timer or similar.

4 - i've seen some 90 degrees turns, probably because of lag or similar. it is probably a bug you may want to take a look to.

Other than that, congratulations!