Was it a mistake for Square Enix to team up with Disney? Not at all...
The RPG created a totally new storyline. It used the disney worlds but you could tell where Square Enix put their input. Sora, Riku, and Kairi live on an island and prepare a raff to leave, only the night before everything is stopped and terror strikes over Destiney Island. The skies storm with darkness, creatures rain upon the surface and the place engulfs to suffering. Sora recieves the key blade here and then is set to fight against the evil. Shortly after defeating these creatures he is left by the darkness without Riku, or Kairi. He ends up in Traverse Town. From there he meets Donald and Goofy who help him throughout his quest. You can pick from different Disney planets to go to which is sort of neet. The plot of the game is to stop a man named Ansem from getting all the hearts of the seven princesses.
My favorite part of the game is the tournaments, fighting all the different people may be tough but it's fun. Sephiroth is a boss from the tournament, the hardest in the game at that. Cloud and a couple of other of Final Fantasy's characters are also included in the game.
When you go to the Whiney the Pooh world there are some pretty fun mini games, and some at the other worlds. Kingdom Hearts is a game for anyone who enjoys simply the classics of Disney or the action of Final Fantasy and other Square Enix games. This game enjoys some laughable moments and some serious ones, it includes challenge and simplicity all at once. Like in most of the game Square Enix helps with, strategy is key to success.