This Gameboy game is a mix of action and adventure. As before you control the Boy, who is accompanied by the very versatile Blob from outer space. Your mission is to rescue the Princess Blobette from a large castle. In order to do so, the Boy must once again use the Blob to get past the castle's many obstacles. The Blob is an extremely useful creature. By feeding it different flavored jelly beans it will turn into a variety of different objects to help you overcome the castle's many obstacles.
—Shawn Watson