[danielsoneg]

Well, it is harder in a game to indicate to the player when they should press the Rhinoceros button - sure, running man to WWI fighter plane is fairly intuitive, and the squiggly-line-to-polygon-to-point-cloud powerup basically speaks for itself, but finding some fairly obvious method of indicating this is the point in the game story/world where the rhino is called for can be more of a challenge.