It is a good take on a such genre. However, gravity sometimes felt almost like "screen borders". Maybe, that could be fixed with some kind of effects, but it would probably be difficult to not overdo and not to make "too much" info.
Agree with other commenters about gravity shader!
Ah, maybe also keeping small objects that you consume at first would be a nice touch. It would add to a score by little, but feel almost like magic.