The Emperor Jones
An expressionist play in eight scenes; a monodrama.  The action "takes place on an Island in the West Indies as yet not self-determined by White Marines.  The form of native government is, for the time being, an Empire."

The Hairy Ape
"A Comedy of Ancient and Modern Life in Eight Scenes" is what O'Neill called this play, also noting that "it seems to run the whole gamut from extreme naturalism to extreme expressionism—with more of the latter than the former."

Anna Christie
A play in four acts; awarded the Pulitzer Prize, 1922.

Desire Under the Elms
A tragedy in three parts and twelve scenes laid "in, and immediately outside of, the Cabot farmhouse in New England, in the year 1850."

Strange Interlude
A play in two parts and nine acts, covering twenty-five years, 1919-1944, though chronological dates are irrelevant to this play, the personal passage of internal time being much more important.

Ah, Wilderness!
A play in four acts and seven scenes, O'Neill's only performed comedy, set in "a large small-town in Connecticut," July 4-5, 1906.

The Iceman Cometh
A play in four acts set in "a cheap ginmill .. . situated on the downtown West Side of New York." The action covers two days and nights in early summer, 1912.

Long Day's Journey Into Night
A play in four acts and five scenes, "a play of old sorrow, written in tears and blood," awarded the Pulitzer Prize in 1957. This autobiographical play takes place from 8:30 A.M. to around midnight on an August day, 1912.

A Moon for the Misbegotten
A semi-autobiographical play in four acts; O'Neill's tribute to his brother, James O'Neill, Jr. The action takes place between noon on an early September day in 1923 and dawn the following morning.