The object of this game is to shoot every last insect, frog, and other critter that appears on the circuit board. The pests come in waves. The more of each wave you dispatch, and the more accurate you are doing so, the higher your bonus at the end of the wave. There are seven waves in all, but you will see the higher waves only if you are accurate enough. Miss too many shots in a given wave, and the game is over.
When the game ends, you are rated based on your performance. If you're really good, you get to be a Hacker, or even an Engineer. If you're not so hot, you may have to settle for Manager, or even CEO, someone who would be kept away from the toys for their own safety.