PacMan has to eat all the dots in the maze; there will be one or more ghosts chasing you. Each level has a new maze.
In this game you should move Pac-Man to eat all the foods in the maze; there will be one or more ghosts chasing you, and you should get away from them.
There are also special power foods scattered throughout the maze; after you've eaten such foods, you will become invincible for a while and will be able to eat the ghosts as well. The number of ghosts chasing you will increase as the game progresses.