Feedback on simple game (reverse of Flappy Bird)

Hi,

I'm planning to re-draw all graphic assets hence I would like feedback specifically on the graphics. I have received feedback ranging from very ugly to nice and anything in-between (for the graphics/backgrounds). Suggestions as to what style the graphics should have is also welcome (e.g. cartoon, realistic etc).

WARNING: It is really simple game and *almost* a flappy bird clone (but with reverse mechanics), so if you are allergic to these kind of games do not bother to download it

.

Android version: https://play.google.com/store/apps/details?id=com.popsoda.fbf_balloon
iOS version: https://itunes.apple.com/sg/app/fly-balloon-fly!/id849801910?mt=8

Thanks a lot in advance for any feedback!