According to studio writer Eric Osborne, ”Really, the artists were trying to push hard away from sci-fi because of the Halo legacy and history. They were just thinking, ‘What can we do that’s radically different after 10 years?’ So there’s actually some concept art that you can find online of a very fantasy-driven world of knights, swords and sorcery in a white city on a hill.
“That was very much pure fantasy, but the more they continued to work and the more their ideas formed over time, the more they realized that the lure of sci-fi was just something they loved and they were denying themselves that creative space. So they thought, ‘What if we just take these two things and smash them together?’”
Destiny is due to be released on Xbox 360, Xbox One, PlayStation 3 and PlayStation 4, and a PC version is all but announced.