PANG (Mitchell - Arcade - 1989)
You'll need to use every inch of your skills to guide the intrepid adventurers through innumerable countries, shooting the giant balls as you go. When one is hit, it divides itself into two others until reaching its smallest size.
But watch out with wild animals: Although some creatures aren't willing to help you, others may give you more than you bargained for.
The balloons are coming but you're not worried, cause you're one of the fearless Buster Bros!