The opening of Worlds of Fun marks the start of summer fun! May 4th, 2024, Worlds of Fun will be opening it's gates for an incredible season of fun and thrills. This year, welcome back the newly reimagined Zambezi Zigner to the list of 60 rides for you to enjoy. Between the coasters, games, Planet Snoopy and Oceans of Fun, opening May 25, there is something for everyone in your group to enjoy.