| 3.94 | - | |
| 3.93 | - | |
| 3.75 | - | |
The Hitchhiker's Guide to the Galaxy: The Tertiary Phase | 5 | - | |
| 4.17 | - | |
| 3.97 | - | |
| 4.23 | - | |
The Sea and Little Fishes | 4.11 | - | |
| 3.8 | - | |
| 4.36 | - | |
Science of Discworld - Terry Pratchett
- Ian Stewart
| 5 | - | |
The folklore of Discworld | 4.2 | - | |
| 4.02 | - | |
| 3.79 | - | |
So Long, and Thanks for All the Fish | 3.91 | - | |
| 3.75 | - | |
The Long Dark Tea-Time of the Soul | 3.82 | - | |
| 4.19 | - | |
| 3.93 | - | |
| 3.73 | - | |
Dirk Gently's Holistic Detective Agency | 3.9 | - | |
| 4.27 | - | |
| 3.94 | - | |
| 3.99 | - | |
The Restaurant at the End of the Universe | 4.06 | - | |
| 3.98 | - | |
| 3.65 | - | |
Young Zaphod Plays It Safe | 3.38 | - | |
| 3.98 | - | |
Darwin's Watch - Ian Stewart
- Jack Cohen
- Terry Pratchett
| 4.38 | - | |
| 3.47 | - | |
| 4.25 | - | |
| 4.43 | - | |
| 4.04 | - | |
Life, the Universe and Everything | 4.01 | - | |
| 3.75 | - | |
| 4.16 | - | |
| 4.22 | - | |
| 3.96 | - | |
The Long Earth - Terry Pratchett
- Stephen Baxter
| 3.63 | - | |