How many of Aristophanes' forty plays survived virtually complete?

Aristophanes (c. 446 – c. 386 BC), son of Philippus, of the deme Kydathenaion (Latin: 'Cydathenaeum'), was a comic playwright or comedy-writer of ancient Athens and a poet of Old Attic Comedy. Eleven of his forty plays survive virtually complete. These provide the most valuable examples of a genre of comic drama known as Old Comedy and are used to define it, along with fragments from dozens of lost plays by Aristophanes and his contemporaries.

Also known as "The Father of Comedy" and "the Prince of Ancient Comedy", Aristophanes has been said to recreate the life of ancient Athens more convincingly than any other author. His powers of ridicule were feared and acknowledged by influential contemporaries; Plato singled out Aristophanes' play "The Clouds" as slander that contributed to the trial and subsequent condemning to death of Socrates, although other satirical playwrights had also caricatured the philosopher.