Gameplay from A Boy and His Blob - NES. A Boy and His Blob: Trouble on Blobolonia is a side-scrolling platformer in which the character and his friend Blob (full name Blobert) travel together on earth and on Blobert's home planet Blobolonia in a quest to defeat the evil emperor.
Screenshot of A Boy and his Blob at the beginning of the game.
Blobert can change into several different items when he is fed jelly beans. A licorice jelly bean, for instance, will change Blobert into a ladder, while a honey jelly bean will turn him into a hummingbird. Most of these transformations can be remembered mnemonically due to a correlation between the flavor of the jelly bean and the item that results. Whistling at Blobert causes him to change back, often with a musical accompaniment similar to the main theme.
It is possible to trick Blobert into eating a ketchup-flavored jelly bean by throwing him a honey jelly bean first and then quickly throwing the ketchup one. Doing so will cause Blobert to transform into a brick wall which serves no purpose.
The boy must make use of all of these jelly beans to traverse the sewers on Earth, collect diamonds and treasure, and defeat the final boss on Blobolonia, The Emperor, by using vitamins. The emperor has a sweet tooth to the extent that vitamins are fatal.
