My schools version had "jails" and bowling pins

mine (witch i only played once) is called medic it is where there is a medic on each team who can heal players and if the medic gets hit by a ball that team loses

Cool. Mine ( I forgot what we called it) was we had 2 pins on each team one to release the jails and one to end the game and get the win. The jail on the opposite teams side was were your teammates would go if they got hit and if the jail pin got knocked down in any way the people on the inside would "jailbreak " as we liked to call it