Pac-Man is a maze arcade game developed and released by Namco in 1980. The original Japanese title of Puck Man was changed to Pac-Man for international releases as a preventative measure against defacement of the arcade machines by changing the P to an F. Outside Japan, the game was published by Midway Games as part of its licensing agreement with Namco America. The player controls Pac-Man, who must eat all the dots inside an enclosed maze while avoiding four colored ghosts. Eating large flashing dots called Power Pellets causes the ghosts to turn blue, allowing Pac-Man to eat them for bonus points. Pac-Man is a maze chase video game; the player controls the eponymous character through an enclosed maze. The objective of the game is to eat all of the dots placed in the maze while avoiding four colored ghosts — Blinky (red), Pinky (pink), Inky (cyan), and Clyde (orange) — that pursue him. When all of the dots are eaten, the player advances to the next level. If Pac-Man makes contact with a ghost, he will lose a life; the game ends when all lives are lost. Each of the four ghosts have their own unique, distinct artificial intelligence (A.I.), or personalities; Blinky gives direct chase to Pac-Man, Pinky and Inky try to position themselves in front of Pac-Man, usually by cornering him, and Clyde will switch between chasing Pac-Man and fleeing from him