The original UK cloth edition (ISBN 0575020113), subtitled "A Fantasy of Love & Discord", has 38 chapters & "Acknowledgments & Notes". The later US cloth edition adds a quote from Ernest Hemingway, has 43 chapters, drops the subtitle & expands the Acknowledgements & Notes. A later US paper edition also features an "Additional Note" about a possible biological error in the plot.
| Year | Award | Category | Status |
|---|---|---|---|
| 1976 | Locus Poll Award | Best SF Novel | Nominee/Finalist |
| 1977 | Locus Poll Award | Best SF Novel | Nominee/Finalist |
| 2001 | Gaylactic Spectrum Awards | Hall of Fame | Winner |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| September 1975 |
|
Imperial Earth: A Fantasy of Love and Discord | Gollancz | Novel | 13 |
| January 1976 |
|
Imperial Earth | Harcourt Brace Jovanovich | Novel | |
| April 1976 |
|
Imperial Earth | Harcourt Brace Jovanovich / SFBC | Novel | 3 |
| November 1976 |
|
Imperial Earth | Ballantine Books | Novel | 2 |
| December 1976 |
|
Imperial Earth | Ballantine Books | Novel | ND |
| December 1976 | Imperial Earth | Del Rey / Ballantine | Novel | ||
| 1977 |
|
Imperial Earth | Pan Books | Novel | 15 |
| 1977 |
|
Imperial Earth | Pan Books | Novel | 15 |
| 1977 |
|
Imperial Earth | Pan Books | Novel | 15 |
| 1977 |
|
Imperial Earth | Pan Books | Novel | 15 |
| May 1977 |
|
Imperial Earth | Pan Books | Novel | 15 |
| May 1977 | Imperial Earth | Del Rey / Ballantine | Novel | ||
| 1978 |
|
Imperial Earth | Pan Books | Novel | 15 |
| February 1978 |
|
Imperial Earth | Del Rey / Ballantine | Novel | 2 |
| November 1979 |
|
Imperial Earth | Del Rey / Ballantine | Novel | 2 |
| 1980 |
|
Imperial Earth | Pan Books | Novel | 14 |
| October 1980 | Imperial Earth | G. K. Hall & Co. | Novel | ||
| 1981 |
|
Imperial Earth | Pan Books | Novel | 14 |
| January 1981 | Imperial Earth | Del Rey / Ballantine | Novel | ||
| 1983 |
|
Imperial Earth | Pan Books | Novel | 14 |
| February 1984 |
|
Imperial Earth | Del Rey / Ballantine | Novel | |
| March 1984 |
|
Imperial Earth | Del Rey / Ballantine | Novel | [1] |
| September 1987 | Imperial Earth | Del Rey / Ballantine | Novel | ||
| September 1988 |
|
Imperial Earth | VGSF / Gollancz | Novel | |
| March 1991 |
|
Imperial Earth | Bantam Spectra | Novel | |
| February 1992 |
|
Imperial Earth | VGSF / Gollancz | Novel | |
| June 1993 | Imperial Earth | VGSF / Gollancz | Novel | ||
| March 1995 |
|
Imperial Earth | VGSF | Novel | |
| April 1997 |
|
Imperial Earth | Vista | Novel | |
| 1998 |
|
Imperial Earth | Vista | Novel | |
| June 2001 |
|
Imperial Earth | Gollancz | Novel | |
| June 2003 |
|
Imperial Earth | ibooks | Novel | |
| June 2005 |
|
Imperial Earth | ibooks | Novel | |
| September 2011 |
|
Imperial Earth | Gateway / Orion | Novel | |
| November 2012 |
|
Imperial Earth | RosettaBooks | Novel | |
| November 2012 |
|
Imperial Earth | RosettaBooks | Novel | |
| April 2022 |
|
Arthur C. Clarke Audiobook Collection | MotionAudiobooks | Omnibus | |30 |
| September 2022 |
|
Imperial Earth | RosettaBooks | Novel | |
| February 2023 |
|
Imperial Earth | Gollancz / Orion | Novel | 3 |