Yeah "puzzle" to the game is to figure out how to add more (then remove) everything. Basically when you see things moving up/down hold buttons down to add more to the screen. If they're moving sideways, then it'll remove things to screen. So if you hold always, you'll get a brief moment of colours then a bunch of blackness
There isn't too much game here, just a bunch of flying colours if you're into that kind of thing