Beebul

Beebul, a bovine creature sits atop a selection of platforms on which a variety of thingies twist and turn. You must deduce the best way of collecting the objects whist avoiding the aliens. When you reach the bottom, a teleport is available back to the top. Collect the lot and another screen is revealed, which the same but harder. There isn't a max set of lives, merely a time limit in which to get the level cleared.