Downpour Derby is the new water-play game where two players face off, and each player cranks a pump so that water flows upward into the bucket over their opponent's head.  The one who pumps the fastest makes the other person's bucket pour over, getting them soaked!  Downpour Derby has a 10-gallon self-refilling water tank that you attach to a garden hose; the tank has a "float valve" that makes it automatically refill itself when the water level drops.  Downpour Derby can also be played by sourcing water directly from a nearby pool instead, making it a great addition to your pool play area!