Ghost Master: The Gravenville Chronicles

Ghost Master (released as Ghost Master: The Gravenville Chronicles on the Xbox and PlayStation 2) is a puzzle strategy game developed by British studio Sick Puppies for Windows. The game was later published on Mac OS X by Feral Interactive. 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, the Ghost Master is given a team of subordinate ghosts to do so.