A Boy and His Blob: Trouble on Blobolonia is an action-adventure game for the Nintendo Entertainment System. The game centers on a boy and a shape-shifting blob who uses jellybean flavors to transform and solve obstacles.

• Cleaned, tested, and guaranteed to play. Authentic cartridge.
• Exploration focuses on mysterious caverns beneath Earth before the adventure moves to the planet Blobolonia.
• Different jellybean flavors trigger different blob forms, turning the companion into tools for traversal and puzzle-solving.
• The story follows Blob’s mission to save his home world from an evil emperor.
• Gameplay blends treasure hunting, obstacle navigation, and humorous character encounters.
• The NES Game Pak designation for this release is NES-GP.

The title is presented as David Crane’s A Boy and His Blob, tying the NES release to a distinctive puzzle-adventure concept built around transformation-based problem solving.