A difficult platformer with characters from the Konami world. You can play with Simon Belmont, Moai, Kong, Goemon, and others. It was never released in the U.S., but appears to have a fan-made translation patch.
Wai Wai World is in trouble, as the evil Waruumon has kidnapped Princess Herb! Luckily, Dr. Cinnimon has created a hero that can stop him. Rikkuru! Can he save the princess, by traveling through all of Wai Wai world??