The popular "Minesweeper" game under older versions of Microsoft Windows had a cheat mode triggered by entering the command codice_1, then pressing the key sequence shift and then enter, which turned a single pixel in the top-left corner of the entire screen into a small black or white dot depending on whether or not the mouse pointer is over a mine. This easter egg was present in all Windows versions through Windows XP Service Pack 3, but under Windows 95, 98 and NT 4.0 the pixel was visible only if the standard Explorer desktop was not running. The easter egg does not exist in versions after Windows XP SP3.