Whenever you go in the pool, you know just swimming can get boring after a while. Here is a fun pool game. It is called Invisi-bottle. Take an empty clear two-liter plastic bottle. One with a white cap, or the same color as your pool tiles, is also a good idea. Fill the bottle with pool water and line the players up on the pool deck, backs to the water. When they hear the splash, they can turn around and try to find it. It's harder than it seems as the bottle camouflages to the bottom.