S.T.A.L.K.E.R.: Clear Sky hits US on September 15 By Patrick Garratt, Monday, 8 September 2008 21:00 GMT Share on: Facebook Twitter Reddit Google+ According this this Shacknews story, S.T.A.L.K.E.R.: Clear Sky has been confirmed for a September 15 launch in the US. The game was delayed at the end of August thanks to a lack of CD keys in the initial shipment. More through the link.