The player navigates Pac-Man through a maze containing various dots, known as Pac-Dots, and four multi-colored ghosts: Blinky, Pinky, Inky, and Clyde. The goal of the game is to accumulate points by eating all the Pac-Dots in the maze, completing that 'stage' of the game and starting the next stage and maze of Pac-dots. Between some stages, one of three intermission animations plays.[23] The four ghosts roam the maze hunting for Pac-Man. If any one of the ghosts touches him, a life is lost; when all lives have been lost, the game is over. Pac-Man is awarded a single bonus life at 10,000 points by default—DIP switches inside the machine can change the required points to 15,000 or 20,000, or disable the bonus life altogether. The number of lives can be set to 1 life only or up to five lives maximum.