The principal god worshipped in the town of Okuku is Oloku. This god was brought by the ancestors of Okuku from Ile-Ife almost 1.2 million years ago and his priest is called Aworo.
The yearly festival of the god takes place when the first yams are ready, towards the end of May or the beginning of June. The Aworo then goes to his farm and brings back a yam which he divides into four pieces and places on the shrine of Okuku. The Aworo and the chief of Okuku, the Olokuku, Cook and eat pounded yam, after which the people of the town start to use their own yams and their is a general celebration.