The particle-effects are so good! I had a lot of fun with this, it looked great, i'm not very good at fast mouse reaction so my score wasn't very impressive, haha! The sound is where I had the most issues with this game though, the music-loop was very short and became a bit annoying after not very long, and it seems like the camera is flipped or something? I was often tricked by the incoming asteroids who sounded like they came from the left and then came at me from the right. ;)
Gameplay-wise, I love how simple it is and well executed, even though I will probably never see my own name on that leaderboard. xD
Nice work ^^