Joe Wilcox has enjoyed something of a monopoly over the early days of FPS add-on content. As Simply Silly Software, he's been responsible for several utilities, including the D!Zone and H!Zone frontends, later going on to produce two commercial addons for Duke Nukem 3D, the better known of which being Nuclear Winter, a Christmas-themed production that ultimately pits Duke against a mind-controlled Santa Claus who is backed by aliens and the Feminist Elven Militia. Nuclear Winter will never win a popularity contest against Duke it Out in DC and Duke Caribbean, for reasons that vary from player to player, but it wasn't even the first Christmas-themed expansion that Wilcox had a hand in.
