Need some feedback on app idea

Hey all,

I made a prototype for a simple game. If you could check it out I’ll be really grateful.
Link: https://drive.google.com/file/d/0B5lCcXEL0vKCSFhiUjZGR25QbXc/view?usp=sharing

Is it good? And what other things could be added to make it more interesting?(In terms of gameplay , graphics i’ll do later)

All feedback whether good or bad will be appreciated.
Thanks.

P.s, its a lot smoother than the video shows