1) The Circle
by Dave Eggers

2) The Nexus Trilogy
by Ramez Naam

3) The Martian
by Andy Weir

4) A Wrinkle in Time
by Madeleine L’Engle

5) Dune
by Frank Herbert

6) Stranger in a Strange Land
by Robert A. Heinlein

7) The Hitchhiker’s Guide to the Galaxy
by Douglas Adams

8) The Hyperion Cantos
by Dan Simmons

9) The Forever War
by Joe Haldeman

10) The Three-Body Problem
by Liu Cixin

11) Ender’s Game
by Orson Scott Card

12) The Foundation Trilogy
by Isaac Asimov

13) Flowers For Algernon
by Daniel Keyes

14) A Scanner Darkly
by Philip K. Dick

15) Quarter Share
by Nathan Lowell