The Encounter
K. A. Applegate
Animorphs (3)
Out of the Silent Planet
C. S. Lewis
The Cosmic Trilogy (1)
The Gates of Creation
Philip José Farmer
World of Tiers (2)
As Tight as Any Knot
M. A. Carrick
Shadowplay
Tad Williams
Shadowmarch (2)
The Last Olympian
Rick Riordan
Percy Jackson (5)
Spirits in the Stars
Erin Hunter
Seekers (6)