| Midsummer (1) | 1901 |
| Easter — "The school of suffering." (1) | 1901 |
| The Dance of Death. I and II (1) | 1901 |
| Engelbrecht (1) | 1901 |
| Charles XII (1) | 1901 |
|
The Crown Bride (1) | 1902 |
| Swanwhite (1) | 1902 |
| The Dream Play (1) | 1902 |
| Christina (1) | 1903 |
| Gustavus III (1) | 1903 |
| The Nightingale in Wittenberg (1) | 1903 |
| Fairhaven and Foulstrand (2) (Partly autobiographical.) | 1902 |
| Sagas | 1903 |
| Alone (11) | 1903 |
| The Gothic Rooms (3) | 1904 |
Word-Play and Handicraft (7)
The Conscious Will in the History of the World (12)
A Free Norway[*]
(* To be published for the first time.)
(11) Mediative Autobiography.
(12) Historical.
| Historical Miniatures (2, historical) | 1905 |
| New Swedish Adventures (2, historical) | 1906 |
| Black Flags (3) | 1907 |
| A Blue Book. I, II, III—The Synthetic Philosophy of Strindberg's Life. | 1907-1908 |
| Storm (13) | 1907 |
| The Burned Lot (13) | 1907 |
| The Spook Sonata (13) | 1907 |
| The Pelican (13) | 1907 |
| The Black Glove (13) | 1909 |
| The Festival of the Finished Building. (2) | 1907 |
| The Scapegoat (2) | 1907 |
|
The Last Knight (1) | 1908 |
| The Slippers of Abu Casem (1) | 1908 |
| The Earl of Bjälbo (1) | 1909 |
| The National Director (1) | 1909 |
| The Great Highway (1) | 1909 |
(13) Chamber Plays.