Start with high-confidence christian fantasy & sci‑fi books, then narrow by subgenre or adjacent topics.
The Chronicles of Narnia 7-book Box Set
C. S. Lewis
The Magician's Nephew
The Enemy Closes in
Bill Myers
The Chamber of Lies
Attack of the Spider Bots
Robert West
Chosen Ones
Alister E. McGrath
Flight of the Outcasts
The Fire, the Revelation and the Fall
Jenny L. Cote
The Door Within
Wayne Thomas Batson
The Dragon and the Stone, Volume 1
Kathryn Butler
The Door in the Dragon's Throat
Frank E. Peretti
Kingdom's Dawn
Chuck Black
Kingdom's Hope
Kingdom's Edge
Kingdom's Reign
Kingdom's Call
Sir Rowan and the Camerian Conquest
The Princess and Curdie
George Macdonald
