Really neat idea. As otherwise mentioned, the spikes being able to kill you as soon as your hat-pixel is next to them did make them slightly annoying, but you were generous in the amount of time you had to cross them. Actually, I felt that the game incentivized controlling one mob at a time to micromanage them individually into exactly where you wanted them, while it might have been especially interesting if you hadn't been as readily able to keep them separate. Or perhaps I did not get as many levels in as I should have to see that.
Nevertheless a really interesting mechanic-set and cute game ^_^ Thanks for making it! Cheers.