Thank you so much for taking the time to try out the game! Yeah, an update to fix that restart button has been forthcoming for a while, and I think I'll probably up the base speed as well, thanks for that suggestion. We'd definitely want to try to make more levels (in fact, that was the original idea before we started running out of time and had to settle for a increasingly-higher spawn speed method of difficulty increase). We'll probably either build more on this game or make a new product (leaning towards update patches myself), but yeah, thank you for your feedback~