Hell yeah, I'm a star!
If I understand correctly, you also made the graphics and the music. Well, congratulations on that!
I agree with Cosmologicon in that the game isn't challenging. I've never played Katamari, so I don't really know how do they handle challenge on it. Perhaps with a timer, so you have to plan a route to absorb everything as fast as possible?
The original had you on a timer, but also with better level design and just bigger levels in general. They had you relatively boxed in until you reached a certain size, than you could break through to new areas.
I wanted to do similar with this, but it wasn't really feasible with the setting I'd chosen. Because of the comic, you start at size "car", and the biggest things I could think of were trees and buildings. Would be fun to do some more experimenting with the concept.
