Ok... This was a really weird game, but actually, I liked your idea... I think it was a really original concept.
The game started warning me about the difficulty that will be increasing as I get over the levels, but the levels were really easy... Until I reached a level that is just imposible to clear.... I think it's a little bit hard to move the cursor ball... It sometimes get to be too slow to avoid the whole swarm of black balls, and the just end up swallowing you...
Anyway, great game!... Maybe it's small, and has not the best graphics, but the good idea is the important thing when making games.
Keep the good work.