Greek tragedy and the Dionysia
Plays were performed once, in daylight, at a civic religious festival honouring the god Dionysus, before thousands of citizens. Three playwrights competed with three tragedies each plus a satyr play. Actors wore masks, a singing-and-dancing Chorus mediated the action, and violence happened offstage, reported by messengers.
Sophocles
Sophocles (c. 496–406 BCE) was the most successful of the tragedians and also served Athens as a general and priest. He is credited with adding a third speaking actor and reducing the Chorus's dominance, sharpening the focus on individual character and choice.
A story the audience already knew
Every spectator knew the Oedipus myth. The suspense is not what happened but how and when Oedipus will be forced to see it — dramatic irony sustained across the whole play.
Oracles, gods and a real plague
The play dates from around the time a devastating plague struck Athens (430 BCE) during the Peloponnesian War. Questions about divine justice and whether oracles could be trusted were genuinely alive for the first audience.
Aristotle's model tragedy
In the Poetics, Aristotle uses Oedipus to define tragic form: hamartia (error or flaw), peripeteia (reversal), anagnorisis (recognition) and catharsis. That framework has shaped how the play is read ever since — and is worth arguing with.