in "pac-man", the player makes a pac-man, a yellow disc, move around a maze. the ghosts are blinky, pinky, inky, and clyde. the goal is to eat every yellow pellet (circles) while not getting caught by the ghosts/monsters. for extra points, fruits that appear can also be eaten. when pac-man eats a big pellet, the ghosts turn blue for a short period of time and can be eaten. the time that the ghosts are blue generally decreases from one stage to the next. beginning at stage 19, the ghosts do not turn blue at all when a power pellet is eaten. even though the game has 256 stages, the last level can not be finished due to a problem with the creation of the game.