WhirlyBall For All Ages From 8 to 80. Just about anyone can play WhirlyBall! Since the cars are the great equalizer, WhirlyBall is enjoyed by a very diverse group of people on the court together. Tall or short, male or female, gifted athlete or couch potato, child over 8 years old and 4’6" or adult, WhirlyBall is a great place for ALL to compete with and against each other. WhirlyBall is a team sport and a fun group activity. The playing court is approximately 4,000 sq. ft. and there are 10 WhirlyBugs™ on the playing court at one time, five red and five yellow. The objective is for each team to effectively pass the whiffle ball between team.