Avatar entangled in the plan of an ostensibly virtuous and benevolent organization named the Fellowship (inspired by Scientology) to create a gateway for the evil entity known as the Guardian to enter Britannia. Though all of the main line of Ultima games are arranged into trilogies, Richard Garriott later revealed that Ultima VII was the first game where he did any sort of planning ahead for future games in the series. He elaborated that "the first three didn't have much to do with each other, they were 'Richard Garriott learns to program'; IV through VI were a backwards-designed trilogy, in the sense that I tied them together as I wrote them; but VII-IX, the story of the Guardian, were a preplanned trilogy, and we had a definite idea of where we wanted to go." An expansion pack was released named Forge of Virtue that added a newly arisen volcanic island to the map that the Avatar was invited to investigate. The tie-in storyline was limited to this island, where a piece of Exodus (his data storage unit) had resurfaced. To leave the island again, the Avatar had to destroy this remnant of Exodus. In the process of doing so, he also created The Black Sword, an immensely powerful weapon possessed by a demon. Ultima VII Part Two: Serpent Isle (1993) was released as the second part of Ultima VII because it used the same game engine as Ultima VII. According to interviews, Richard Garriott felt it therefore did not warrant a new number. Production was rushed due to deadlines set to the developers, and the storyline was cut short; remains of the original, longer storyline can be found in the database. Following the Fellowship's defeat, its founder Batlin flees to the Serpent Isle, pursued by the Avatar and companions. Serpent Isle is revealed as another fragment of former Sosaria, and its history which is revealed throughout the game provides many explanations and ties up many loose ends left over from the Age of Darkness era. Magical storms herald the unraveling of the dying world's very fabric, and the game's mood is notably melancholic, including the voluntary sacrificial death of a long-standing companion of the Avatar, Dupre. By the end of the game, the Avatar is abducted by the Guardian and thrown into another world, which becomes the setting for the next game in the series. The Silver Seed was an