Bug Blaster is a very good implementation of the arcade game called Centipede. The action takes place in a mushroom patch full of centipedes, spiders, frenzied fleas, and a mushroom poisoning scorpion called Brian.
Your main objective is to wipe out the centipedes before they take over. The job is not too easy, especially in the later stages when the game speeds up and the action becomes fast and furious, although the early stages do tend to become rather boring after a while.
Includes a high score table and extra life features.