📖 About Boundary

Boundary is a series universe written by Eric Flint. The complete collection runs to 7 books across 2 series, published between 2006 and 2020.

The main series is Publication Order of Boundary Books with 4 books. It opens with Boundary (2006) and currently runs to Portal (2013).

Series included on this page:

🎯 Where to Start with Boundary

New readers should begin with the first book of the main series in publication order: Boundary (2006), book 1 of Publication Order of Boundary Books. Reading in publication order lets the world and characters develop the way the author intended, and it avoids spoilers that later books may contain.

Each of the 2 series on this page is expandable — click a series heading to see every title it contains, in order, with a direct link to buy the book on Amazon.

📚 Boundary Books in Order

Publication Order of Boundary Books
4 books
1
Boundary book cover1Boundary2006Buy on Amazon
Threshold book cover2Threshold2010Buy on Amazon
3Skyspark2013Buy on Amazon
Portal book cover4Portal2013Buy on Amazon
Publication Order of Boundary: Castaway Books
3 books
2
Castaway Planet book cover1Castaway Planet2015Buy on Amazon
Castaway Odyssey book cover2Castaway Odyssey2016Buy on Amazon
Castaway Resolution book cover3Castaway Resolution2020Buy on Amazon

❓ Frequently Asked Questions

How many Boundary books are there?
There are 7 books in the Boundary collection, organised into 2 series and published between 2006 and 2020.
What is the first Boundary book?
The first book is Boundary, published in 2006.
What order should I read the Boundary books in?
Most readers use publication order, which is the order the books were originally released. A chronological order is also provided on this page for readers who prefer to follow the internal timeline of the story.
Who wrote the Boundary books?
The Boundary books were written by Eric Flint.
Is the Boundary series finished?
The main series, Publication Order of Boundary Books, has 4 books so far. The most recent title listed on this page gives the current end point of the series.
When did the Boundary series start?
The earliest title in this collection was published in 2006, and the most recent in 2020.