Trilogy (Score 1)

While Antigone, Oedipus Rex, and Oedipus at Colonus are all by Sophocles and do treat roughly the same topic, they don't qualify as a trilogy in terms of the Ancient Greek theater. A trilogy, properly a tetralogy, consisted of three plays, not necessarily on the same subject, by one author performed on one day at a festival in Athens called the Dionysia. The fourth performance that day, also by the author of the earlier plays would be a Satyr play, typically filthy and ribald. Only one Ancient greek trilogy survives, and that's Aeschylus's Oresteia, made up of: the Agamemnon, the Libation Bearers, and the Euminides.

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