Very cool. Quick feedback: there are too many players on one screen. Getting immediately run into and killed repeatedly by random players careening around isn't a great user experience. My guess is dropping ~5 players max onto a canvas would be more compelling, and lead to longer initial engagement times.
Good feedback; just bumped up the split between users and games. Should ease up a bit. As traffic ebbs and flows we'll try to keep it balanced. It doesn't assign users in any intelligent way right now..
It also seems that spawning happens only in the top left section of the canvas, which makes that area especially crowded.
It's a bit too easy to get killed right after spawning; maybe there should be a very short grace period in which you can start moving, but can't yet kill or be killed.