Ghost MasterSick Puppies·Strategy FirstReleased 21 Dec 2006·App 6200Steam user reviewsVery Positive89.6%· 2K reviewsRecent Overwhelmingly Positive · 100%SteamPeaks Rating88.4 Very positiveRecent 30 days —How it worksPlaying now3−4 vs. yesterday2.4%of peakAll-time peak125Oct 2013