Boundary Books in Order
4
Books
2006
First Book
2013
Latest Book
8
Years
Below you'll find the complete list of Boundary books in publication order. This is generally the recommended reading order for the series.
Reading order verified: January 2026
Publication Order
Frequently Asked Questions
The recommended reading order for the Boundary series is publication order: 1. Boundary (2006), 2. Threshold (2010), 3. Skyspark (2013), 4. Portal (2013). This is generally the best way to experience the story as the author intended.
The Boundary series by Ryk E Spoor contains 4 books. The series began in 2006 and continues to be a popular choice for readers.
The Boundary series is written by Ryk E Spoor. You can find more books and series by this author on our website.
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