This game is a solid Pacman clone from 1987. It has all the standard elements, and not too many (if any) new ones.
You control Packman in his never-ending quest to get all those dots. Why he wants them: beats me. Four ghosts always want to get you: stay out of their way or eat one of the big dots and start eating them. Occasionally, bonus fruit appears, eat it for yet more points. The objective, of course, is to get as many points as possible. The four ghosts have the exact same color, so they can't be distinguished. If you get all 180 dots on a level, then you go on to the next one.