When Ronnie the Super Rat radiates earth with a pest beam from his moon base, the world leaders' only hope is Kernel Kleanup, the mascot from the Western Exterminator Company. With his trusty hammer, Kernel needs to clear the levels by slamming all loose bugs. You will be haunted by spiders, ants, fireflies, worms, sharks, jellyfish and mutants.
The nine levels are pretty straightforward side-scrolling platform stages, with a nice twist in level 5, 7 and 8.1 (a helicopter, underwater and moon surface level respectively). While playing, you can view a status report with the remaining bugs to be found. Some defeated enemies leave behind hearts (extra lives) and the final level introduces an adventure element when you have to find a key card to open the door to Ronnie's lair.