What kind of soccer ball do you need to play a game?

As long as it's hexagonal like the rest, its okay. You can use a round ball like playground ball but if you want to play a real soccer game, then use the hexagonal balls. Dont use hard ball like basketballs. Also dont use balls that are not round like footballs. Use balls that are a reasonable size. No smaller than a hexagonal soccer ball. :D hope this helped