Worlds United: The Great Cinema Rescue

Kingdom Smash Bros: Heroes of Chaos  is a Japanese-American action role-playing video game that is a crossover between  Super Smash Brothers and Kingdom Hearts.

Summary
A disruption in time and space has severely weakened the barriers between the worlds of Kingdom Hearts and Super Smash Brothers. Travel across the universe has become too easy, heroes from across the worlds end up where they shouldn't, seven bodies of both light and darkness are scattered across the universe, and a new Keyblade wielder has emerged.