A device includes a substrate carrying an array of diodes, organized in rows and columns, and a peripheral substrate contact is arranged on at least one side of the array. The present invention seeks to define a class of scoreline patterns that result in a higher density of scorelines along the bottom perimeter of an iron face. Once results for the additional free plays are displayed, the secondary game is conducted again and the outcome of the secondary game may award yet more free plays. 05-12%, octoxynol-9 in an amount of from 0. At least one groove is provided in an outer surface of the valve pin and at least a portion of the outer surface of the valve pin is in continuous engagement with the mold gate to align the valve pin relative to the mold gate.