Pre-ordered?? – mahjong 3d - frontier quest Review

I get this email that says I preordered this app. First of all who preorders an app? Second there are a 1000 games just like this one, so I could just download one of those. I really hope I didn’t pay anything for this and not sure of this BS preorder scheme.
Review by GS uber on mahjong 3d - frontier quest.