A centipede comes down from the top of the screen, and you play the title role in Bug Blaster - you must shoot it. There are mushrooms scattered around, which get in the way both of you and the centipede. There are bonuses for shooting Brian, the mushroom-poisoning scorpion, and spiders. You are a small base at the bottom of the screen that moves left, right and about five lines up and down.
Bug Blaster uses four direction keys and a shoot key, and includes a hall of fame.
The objects and characters are well drawn, showing good detail, and colour is well used. All mobile objects move smoothly and without flicker.
There are sound effects for the centipede's movement, firing, spiders and snails appearing, and for a bonus man every 10,000 points, but a tune before and during play might have brightened things up.
Good sound and graphics make Bug Blaster a fair game, though it seems to be a plushed-up version of Space Invaders set in different surroundings. It becomes boring, as the action is the same on each screen - only the colours change and the speed increases. More variation in screens and attention to detail in game options would have made it very good.