Rescue of Princess Blobette is an action-adventure game where you control the Boy, accompanied by the versatile Blob, as he attempts to rescue the Princess from a large castle. Your goal is to navigate through the castle's obstacles using the Blob's various forms, which can be achieved by feeding it jelly beans. The Blob can transform into useful objects such as a trampoline, ladder, or key.
The gameplay involves exploring the castle, avoiding enemies, and solving puzzles to progress through the levels. The Boy's movements are restricted, making you rely on the Blob's transformations to overcome challenges. With its unique mechanics and varied obstacles, Rescue of Princess Blobette offers an engaging and challenging experience.