An epic is a long narrative poem that recounts the deeds of a larger-than-life hero who embodies the values of their society. Epics often concern conflicts between good and evil and are written on a grand scale. There are two types of epics: folk epics which are oral traditions that change over time, and literary epics which are fixed written works. Epics feature heroes who undertake extraordinary journeys and battles while gods or supernatural beings may intervene. The hero embodies the highest ideals of their culture and achieves immortality through their legacy.