The Gemini Tournament is an underground pirate tournament that is held under Groove 25 on Saboady Archipelago. Though it is called the Gemini Tournament, it has not been given an official name for the area where the combatants reside. The Gemini Tournament plays a great role in One World as Scott.D.Rio; the main protagonist of One World enters the tournament and learns that his abilities are not enough to make it to the New World and that he needed time to train himself to prepare for the unknown adventures that lay waiting.