It looks like it didn't really matter where I was aiming at, I noticed that some other asteroids were exploding that I wasn't shooting at. It just felt like I was just pressing the mouse button as fast as I could, there wasn't enough challenge for me. Maybe I gave up too fast but well. I still spent a good few minutes shooting and enjoying myself but then it just felt boring and weird. I also had a weird bug when I maximized the window. With a little more polish, some sound effects and animations this can be a very good game, right now it's maybe too easy or just a prototype that doesn't really work as expected. But you have something going on here so great job.