Ghost Master is a puzzle/strategy game for the PC. It is among a small selection of games that put the player in the role of the enemy. In this case, the player assumes the role of a Ghost Master, a bureaucratic spirit tasked to perform certain duties. While the bulk of a Ghost Master's duties consist of hauntings, a Ghost Master may also be "called in" to increase belief in the supernatural, avenge deaths, and conscript renegade ghosts. Because a Ghost Master cannot directly interfere in the world of mortals, he is given a team of subordinate ghosts to do so.