There are a total of 9 books related to the Maze Runner series by James Dashner. This includes a main trilogy, prequel novels, novellas, and a sequel trilogy. Here is the breakdown:
- Main Trilogy: 3 books
- The Maze Runner
- The Scorch Trials
- The Death Cure
- Prequel Novels: 2 books
- The Kill Order
- The Fever Code
- Novella: 1 book
- Crank Palace
- Sequel Trilogy ("The Maze Cutter" series): 3 books
- The Maze Cutter
- The Godhead Complex
- The Infinite Glade
So, the main Maze Runner story is primarily the first three books, but the series as a whole has 9 total works including companion and sequel books.