| #1 |  Foundation
| 3.98 |
| #1 |  The Chrysalids
| 3.7 |
| #1 |  Feed
| 3.59 |
| #1 |  The Midwich Cuckoos
| 3.98 |
| #1 |  Foundation and Empire
| 4.04 |
| #1 |  Foundation's edge
| 3.95 |
| #1 |  Ender's Game
| 4.25 |
| #1 |  The Day Of The Triffids
| 3.82 |
| #1 |  Mostly Harmless
| 3.77 |
| #1 |  Second Foundation
| 4.15 |
| #1 |  The Dark Forest
| 4.25 |
| #1 |  The Three-Body Problem
| 3.94 |
| #1 |  So Long, and Thanks for All the Fish
| 3.89 |
| #1 |  The Restaurant at the End of the Universe
| 4.07 |
| #1 |  The Hitchhiker's Guide to the Galaxy
| 4.24 |
| #1 |  Death's End
| 4.35 |
| #1 |  Life, the Universe and Everything
| 3.99 |
