Your job here is to drop the cat on the purple platforms. You simply click near the top where you want it to drop from. Attractors (green balls) will draw you towards them. Repulsors (purple balls) will push you away. If the cat hits either type, it disappears and you'll need to click again.
Note that even if you click down further on the screen, it'll still drop you from the upper part...It's using MouseX and a Y position near the top. This game is far from finished. Notes are given for what I envision for levels 4 and 5. Further levels are likely to be variations on Level 5, I suppose, although I also had an idea to set up Lives in here by throwing in the occasional bomb...Or only allowing a certain number of misses. There's also extraneous code, but I didn't have time to clean up. This is more a proof of concept kinda thing.