Adventure literature is built around journeys, danger, discoveries, and trials that keep the hero moving forward. Expeditions into unknown lands, treasure hunts, escapes, battles, and risky missions are central to the action.
Unlike fantasy or science fiction, adventure is defined not by the nature of its world but by the character of its plot. An adventure story can take place almost anywhere, from a medieval kingdom to a distant planet, as long as movement, risk, and exploration of the unknown remain at its heart.