This was really fun to play and was actually quite addicting! I can definetly see myself playing this on the smartphone. The visual art is really good too. Maybe for later updates you could add types of objects each one with a particulary ability when shot? I mean you have like 4 types of "objects" to suck, and then you can choose which one to shoot, instead of having every object turned into a bullet (of course this would have been a bit time consuming to do in the jam so i'm talking to a future release).
I would be really happy if you tried and rated my game too, since not many people are rating my game at the moment (I'm starting to think my icon is too bad and should probably change it).