A Wrinkle in Time by Madeleine L'EngleNumber the Stars by Lois LowryHoles by Louis SacharThe Golden Compass by Philip PullmanThe Little Prince by Antoine de Saint-Exupéry
Best Young Adult Books
13,193 books — 80,430 voters
Slaughterhouse-Five by Kurt Vonnegut Jr.Dirk Gently's Holistic Detective Agency by Douglas AdamsTimequake by Kurt Vonnegut Jr.The Time Traveler's Wife by Audrey NiffeneggerA Wrinkle in Time by Madeleine L'Engle
Best Time Travel Fiction
2,155 books — 5,433 voters

The Hitchhiker’s Guide to the Galaxy by Douglas AdamsEnder’s Game by Orson Scott CardThe Martian Chronicles by Ray BradburyA Wrinkle in Time by Madeleine L'EngleThe Diamond Age by Neal Stephenson
Best Science Fiction
3,829 books — 7,585 voters
A Wrinkle in Time by Madeleine L'EngleFahrenheit 451 by Ray BradburyBrave New World by Aldous HuxleyThe Martian Chronicles by Ray Bradbury
Best Science Fiction & Fantasy Books
8,705 books — 25,676 voters

House of Leaves by Mark Z. Danielewski
Best Books of the Decade: 2000s
7,216 books — 28,373 voters