Most Warhammer 40,000 fiction is set around the turn of the 42nd millennium (about 39,000 years in the future). Although Warhammer 40,000 is mostly a science-fiction setting, it adapts a number of tropes from fantasy fiction, such as magic, supernatural beings, daemonic possession, and fantasy races such as orcs and elves; "psykers" fill the role of wizards in the setting.