Literary genre groups stories and poems by their tone, technique, subject, or length. For example, epics are long adventure tales, tragedies focus on sad or serious endings, comedies aim to amuse, novels tell long stories, and short stories are smaller snapshots. Poetry and prose are two main ways writers tell things, and subgenres—like mystery, fantasy, or satire—mix with others. Long ago, thinkers such as Plato and Aristotle made early rules about how stories behave, and writers have changed those rules since. Genres help readers know what kind of feeling or world a book might give. Which type of story do you enjoy most?