6 books in series
The Hitchhiker's Guide to the Galaxy
The Hitchhiker's Guide to the Galaxy is a 7-book series with 6 released primary works first released in 1979 with contributions by Douglas Adams and Eoin Colfer.
| #1 |  The Hitchhiker's Guide to the Galaxy
| 4.25 | 3,075 reads | ||
| #2 |  The Restaurant at the End of the Universe
| 4.05 | 991 reads | ||
| #3 |  Life, the Universe and Everything
| 4 | 755 reads | ||
| #4 |  So Long, and Thanks for All the Fish
| 3.9 | 614 reads | ||
| #4.5 |  Young Zaphod Plays It Safe
| 3.38 | 57 reads | ||
| #5 |  Mostly Harmless
| 3.79 | 491 reads | ||
| #6 |  And Another Thing...
| 3.11 | 106 reads |