Ms. Pac-Man is the sequel to the incredibly successful Pac-Man. Ms. Pac-Man was not created by Namco, but was instead developed by General Computer Corporation and released by Midway in 1982. The game was received incredibly by American audiences was praised for its changes to the original game. While the core gameplay is identical to Pac Man, there are a few differences. Four different mazes with corresponding colors were added to the game which appear and alternate as players progress through levels. There are two sets of warp tunnels as opposed to one. The ghosts were also given new behavior patterns.