Fantasy
Fantasy is a genre that uses magic and other supernatural forms as a primary element of plot, theme, and/or setting. The genre is usually associated with the overall look, feel and themes of the European Middle Ages (including architecture, dress and technology), while the actual setting is often a fictional plane or planet where magic and magical beings are commonplace.
Fantasy is generally distinguished from science fiction and horror by the expectation that it steers clear of technological and macabre themes, respectively, though there is a great deal of overlap between the three (collectively known as speculative fiction).
In its broadest sense, fantasy comprises works by many writers, artists, filmmakers, and musicians, from ancient myths and legends to many recent works embraced by a wide audience today.
The identifying traits of fantasy are the inclusion of fantastic elements in a self-coherent (internally consistent) setting. Within such a structure, any location of the fantastical element is possible: it may be hidden in, or leak into the apparently real world setting, it may draw the characters into a world with such elements, or it may occur entirely in a fantasy world setting, where such elements are part of the world.
Within a given work, the elements must not only obey rules, but for plot reasons, must also contain limits to allow both the heroes and the villains means to fight; magical elements must come with prices, or the story would become unstructured
Exert from Wikipedia.org
Popular fantasy works include:
Lord of the Rings
Wheel of Time
Harry Potter
Forgotten Realms
Dragonlance