Some of the asteroids spawn very close to the player. This makes it very frustrating to play, especially when you spawn in and you immediately lose a life. I recommend moving the spawners farther out so that the player has a chance to react and so the player cannot see the asteroids spawning in. I would also recommend lowering the spawn rate of the asteroids. The large number of them on the screen at once made it very easy to die. Other than these two issues, it is a good game with a good foundation. The music and art are both very good. You can't go wrong with a small color palette for a game jam.