The Pokémon World Tournament is a competitive event in the Pokémon series where trainers from various regions come together to battle. It features different formats, including single battles, double battles, and team battles, allowing participants to showcase their skills and strategies. Trainers can use their Pokémon to compete against others, aiming to become the champion of the tournament. This tournament is often held in locations like the Unova region and includes notable trainers such as Cynthia and Iris. Players can participate by registering their teams, and the event is designed to test their abilities in a challenging and exciting environment.