Zen of SudokuUnknown Worlds EntertainmentReleased 14 Dec 2006·App 4900Steam user reviewsVery Positive89.4%· 377 reviewsRecent —SteamPeaks Rating81.5 PositiveRecent 30 days —How it worksPlaying now9+1 vs. yesterday39%of peakAll-time peak23Dec 2018