Customize Baby Calendar for Baby Shower Pool Game by nguyensarah, $45.00. A baby pool is a game where your family, friends, co-workers or anyone you want to guess on the upcoming birth of your new child. Each person guesses on the gender, length, weight and of course, the birthday of your new child! Whoever's guess is closest on all of the categories wins the game. Completely customize your shower game to any theme!