This was fun. The controls felt good, and I liked the slower bullets. The biggest issue I felt was that I wasn't sure there was any reason to use the growing bullets. Maybe if the asteroids could hurt the enemies it would be different. Great job!
That makes sense. Maybe a more clear indicator that the bombs will hurt enemies would help. I mostly just avoided the bombs thinking they would hurt me. It definitely changes the way the game plays when I can grow the bombs.