The Eleven Comedies: Knights, Acharnaians, Peace, Lysistrata, The Clouds, The
Wasps, The Birds, The Frogs, The Thesmophoriazusae, The Ecclesiazusae, and
Plutus. Eleven of his forty plays have come down to us virtually complete.
These, as well as fragments of some of his other plays, provide us with the only
real example we have of a genre of comic drama known as Old Comedy and they are
in fact used to define the genre.
— Excerpted from Wikipedia, the free encyclopedia.