The Kingdom Hearts series is a popular action role-playing game franchise developed by Square Enix. It combines characters and settings from both Disney films and Final Fantasy games, creating a unique crossover experience. Players control Sora, a young hero who wields a magical weapon called the Keyblade as he travels through various worlds to battle dark creatures known as Heartless. The series began in 2002 with the release of the first game, which introduced players to Sora's quest to find his friends and save the universe. Over the years, multiple sequels and spin-offs have expanded the story, featuring beloved characters like Mickey Mouse, Donald Duck, and Goofy.