Alien Encounters
| Douglas Adams | ||
| A+ | The Hitchhiker's Guide to the Galaxy | |
| C | Mostly Harmless | |
| Harold W. G. Allen | ||
| C | Lunar Encounter | |
| Poul Anderson | ||
| B | The Enemy Stars | |
| Greg Bear | ||
| D | Eon | |
| Octavia E. Butler | ||
| C | Dawn | |
| Robert Olen Butler | ||
| F | Mr. Spaceman | |
| David Brin | ||
| B | Sundiver | |
| Orson Scott Card | ||
| A | Ender in Exile | |
| A+ | Ender's Game | |
| A | Ender's Shadow | |
| C | Children of the Mind | |
| B | Speaker for the Dead | |
| B | Xenocide | |
| Arthur C. Clarke | ||
| A | Childhood's End | |
| C | The Garden of Rama | |
| Arthur C. Clarke and Gentry Lee | ||
| C | Cradle | |
| Robin Cook | ||
| D | Invasion | |
| A.C. Crispin and Kathleen O'Malley | ||
| C | Starbridge 5: Silent Songs | |
| Alan Dean Foster | ||
| C | Glory Lane | |
| Harry Harrison | ||
| C | Invasion: Earth | |
| Robert A. Heinlein | ||
| A+ | The Puppet Masters | |
| C | Starship Troopers | |
| Peter Jurasik and William H. Keith, Jr. | ||
| C | Diplomatic Act | |
| Keith Laumer | ||
| C | Timetracks | |
| Russel Like | ||
| C | After the Blue | |
| Frank Belknap Long | ||
| C | Lest Earth Be Conquered | |
| William Manchee | ||
| B | Tarizon: The Liberator | |
