I really like how the theme was used. Spawning more power ups on later levels if you go faster really encourages the player to play fast and makes skipping exploration for more power-ups a viable decision. However, the game is quite basic with little polish and no sound. Still, I had fun and the game does a good job at encouraging the player to go fast.
Another cool thing, is that bullets can collide with each other. idk if it was intentional but it's pretty cool seeing them bounce off each other.