In Raiatea, players act as members of the Arioi, a secret Polynesian religious society. The Arioi will build colossal To'o statues in order to win the favor of their god, Oro.

During the action rounds, players take turns leading the group to various action locations. In ceremony rounds, players call upon the gods for help in building the massive To'o. Construction may fail without the help of the gods, so players must plan their rituals carefully and know how much mana to sacrifice. At the end of the game, the player who has collected the most victory points will guide the group as their new High Priest!