Hello Kitty Roller Coaster is a fun, colorful game that combines action with puzzle-solving adventure! The menacing Block-O dreams of conquering the universe leaves his planet, Planet Cube, in search of his next target. Arriving at Earth, he sees Hello Kitty and friends giving each other gifts in boxes. When the boxes are thrown away, Block-O thinks his people are being mistreated. Hello Kitty and teh other Sanrio characters will have to fight his invasion!