The World's Best Eating Tournament (Tenkaichi Shokuōkai) was a special event that took place during the events of Dream 9 Toriko & One Piece & Dragon Ball Z Super Collaboration Special. The tournament was hosted by the IGO on a mysterious island where individuals from many different worlds, such as Dragon World, the Human World and The Blue Sea could come together and take part in the tournament and win the grand prize: the meat of the Carat Sizzled Cattle, one of the most valuable and delicious foodstuffs in existence.
The tournament was held on a special island where beings from all three worlds could meet, however the island's name is never mentioned nor is its proper location given. The island is small in size but has many natural environments which are mostly untouched by civilization, having a large verdant valley in its south, a thick and lush forest known as Foodie Forest on its eastern side, a large desert region with a rough rocky terrain past the sands on its western side, and a huge sky piercing mountain in its center that is actually an active volcano. Each of these regions is also inhabited by a wide array of strong creatures, making it a very dangerous ecosystem for the unprepared.
The only man made structures on the island are the tournament arena (which is located in the center of the island), an archway for the starting line located at the south of the island, and a dining overlook located at the edge of a cliff within the forest area near the mountain. When seen from above, the island appears to have a dragon-like shape.
The island is mainly inhabited by wild and dangerous animals of great strength and many have Capture Levels of around 40.