haha sorry about that! A wave system would've been great. I've never done that before but in my head I think I can see how that could be done. My biggest worry with getting people to play it was wasting their time, so I leaned a bit further towards the "quick round" end of the scale to make sure they didn't get bored. Ideally, I could've managed that a bit better with a "tutorial" like you said, but I figured if it's so quick to restart hopefully the tutorial becomes the round you played before it.
Thanks for playing and leaving some feedback, especially about waves, that's given me food for thought.