| 1 | 1 | Frank Herbert | Dune [S1] | 1965 | |||
| 2 | 2 | Orson Scott Card | Ender's Game [S1] | 1985 | |||
| 3 | 3 | Isaac Asimov | Foundation [S1-3] | 1951 | |||
| 4 | 4 | Douglas Adams | Hitch Hiker's Guide to the Galaxy [S1] | 1979 | |||
| 5 | 5 | George Orwell | 1984 | 1949 | |||
| 6 | 6 | Robert A Heinlein | Stranger in a Strange Land | 1961 | |||
| 7 | 7 | Ray Bradbury | Fahrenheit 451 | 1954 | |||
| 8 | 8 | William Gibson | Neuromancer | 1984 | |||
| 9 | 9 | Isaac Asimov | [C] I, Robot | 1950 | |||
| 10 | 10 | Arthur C Clarke | 2001: A Space Odyssey | 1968 | |||
| 11 | 11 | Larry Niven | Ringworld | 1970 | |||
| 12 | 12 | Robert A Heinlein | Starship Troopers | 1959 | |||
| 13 | 13 | Philip K Dick | Do Androids Dream of Electric Sheep? | 1968 | |||
| 14 | 14 | Aldous Huxley | Brave New World | 1932 | |||
| 16 | 15 | Arthur C Clarke | Rendezvous With Rama | 1973 | |||
| 15 | 16 | H G Wells | The Time Machine | 1895 | |||
| 17 | 17 | Robert A Heinlein | The Moon is a Harsh Mistress | 1966 | |||
| 18 | 18 | H G Wells | The War of the Worlds | 1898 | |||
| 19 | 19 | Dan Simmons | Hyperion [S1] | 1989 | |||
| 20 | 20 | Arthur C Clarke | Childhood's End | 1954 |
I think Walter Miller’s seminal work , “A Canticle for Liebowitz”, deserves mention. It is often overlooked.