I think this mechanic is very interesting. I agree with inovox that your should could maybe move a little faster. It was unclear at first how you clear the levels, it seems like maybe "creating space" by destroying the chunks would have been a better goal :) The balls you had to destroy seemed to be mis-aligned at times too which made it hard to know which spaces would destroy them. Some level design progression I think would definitely make this gameplay stand out. Nice work!