Pretty cool style and concept! There were moments where it was a bit tricky to see exactly what was going on, but that's part of it so I don't really mind. I like how the little ones can fit through gaps that the player can't, it gives the game a classic cat and mouse feel :D there were a couple gaps that I was unsure at first if I could fit through, so maybe you could make the sizes of the gaps slightly more obvious . Overall though, really good stuff!