Question

A play that ends with death is traditionally considered a ____.

Answer 1

A play that ends with death is traditionally considered a tragedy.
A tragedy is a type of a play which ends on a sad note - usually, one (or sometimes many, even all characters) die, and usually in a very tragic way. Take Hamlet for example - almost everyone dies there: Hamlet, Gertrude, Claudius, Ophelia - almost every important characters is gone by the end of the play.

Answer 2

A tragedy. (someone said that on answers .com so I don't know if it is fake or not)