Really good game quite enjoyable. The only "bad" thing that I can is the lack of music and the lack of replayability, once you play once or twice it kind of gets boring and the fact that it is a quick game doesn't help. What I would suggest would probably be to make tha game last longer and maybe add multiple difficulities. On easy for example maybe you have less meteors and the belt moves slower and maybe on hard the belt moves quicker and more meteors start to attack.
Overall really good submission!