This is a cool and super original game, there are a few things that I'd like to give you feedback
- I'm not sure if a feature or a bug, but i's never sure when the was going to end. I thought maybe you didn't use a timer to reduce the amount of numbers on the screen. If that's the case a, visual cue could work
- Also not sure if intended, but when two powerups collided and died my points where added or reduced.
Great job! really liked it, an interesting take on the theme