In November 2003, shortly after the PDF release of D6 Adventure, the WEG assets changed hands once again. The new owner, Purgatory Publishing, re-released the game in the form of three hardcover rulebooks. The rulebooks, each written by Nikola Vrtis, were actually three separate games. Each shared the same core mechanics, but utilized different attributes, skill sets, equipment lists and power systems. D6 Adventure, an expanded hardcover release of the earlier PDF, covered wild west, pulp, espionage, low-powered super heroes, and other modern or near modern games. D6 Space shared much in common with the earlier Star Wars RPG line, and detailed space opera and cyberpunk game rules. D6 Fantasy dealt with sword & sorcery, high fantasy and swashbuckling campaign models. Khepera Publishing's licensed D6 System super hero game Godsend Agenda was released shortly thereafter.
In 2007, WEG announced Septimus, a new standalone D6 System game with a setting designed by Bill Coffin and a rules system paralleling that of Star Wars: The Roleplaying Game. Near the end of the year, WEG publisher Eric Gibson tentatively announced that the D6 System would soon be adopting a free license. At the end of the month of March, 2008, West End Games announced that the "Septimus" product would not be released due to cost issues.
In August 2009, West End Games released most of the 51000 series of D6 book with attached OGL license officially classifying them and the D6 System as Open under the OGL v1.0. This re-release was in anticipation for a formal launch of the OpenD6 website portal and workstation, meant to aid publishers and players alike in creating, archiving, and searching the wealth of D6 rules and variants. Additionally, August 13, 2009, saw the long-awaited release of Bill Coffin's Septimus which itself was the first formal release of new material under the OpenD6 label.