Reach Up [Android] : My First Game

https://play.google.com/store/apps/details?id=com.azmi.flatbox

I am very relieved after my first game was released yesterday, I made it outside school hours, when i get tired, and takes 1 month (is it too long?).

But there is still some lacks in my opinion.

but I would like to ask your opinion about my game. I would appreciate your comments and suggestions.
Thank You!