10 books · 1 series
Tower Defense and Base-Building Books for Kids: Fortress Kids
Follow the complete ten-book Fortress Kids reading order as Jordan's neighborhood team turns salvage, blueprints, and cooperation into defenses against the Null.
After dark, Jordan's neighborhood becomes a tower-defense arena. The kids must protect a Core beneath their block using barricades, salvaged material, blueprints, and whatever strategy they can assemble before the next wave of Null creatures reaches them.
The ten-book series scales from crude local defenses to specialized enemies, other Sentinel teams, linked Cores, breaches into the waking world, and an offensive inside the Null rift. New structures matter, but no single build solves every wave. The team has to share information, redesign after failure, and cooperate with neighborhoods that approach the same problem differently.
Begin with Siege Night and continue through Last Stand. The defensive system, the network between Cores, and the origin of the Null threat develop book by book, while later titles naturally reflect the larger conflict revealed along the way.
Spoiler-light reading path
The Fortress Kids reading path
- 1
Survive the first night
Siege Night introduces the neighborhood arena, the Core, the Null waves, and the improvised defenses that bring Jordan's team together.
- 2
Turn salvage into a system
Salvage Run and The Swarm add resources, blueprints, and enemy variants that force the team to design rather than simply reinforce.
- 3
Connect the defenders
Sentinel Network and Core Link reveal other neighborhood teams and the dangerous connection between every Core.
- 4
Trace the threat
Breach Point, Deep Signal, and The Architect move the conflict into the waking world and expose the collapsed reality behind the attacks.
- 5
Build the final answer
Core Offensive and Last Stand unite the Sentinel teams around a permanent solution that demands a difficult final construction choice.
Books in this guide
Follow the adventure
Open any book for its premise, age range, format details, and a numbered reading order for the complete series.
Siege Night
Fortress Kids Book 1
Salvage Run
Fortress Kids Book 2
The Swarm
Fortress Kids Book 3
Sentinel Network
Fortress Kids Book 4
Core Link
Fortress Kids Book 5
Breach Point
Fortress Kids Book 6
Deep Signal
Fortress Kids Book 7
The Architect
Fortress Kids Book 8
Core Offensive
Fortress Kids Book 9
Last Stand
Fortress Kids Book 10
Behind the stories
GameLit, illustrations, and world building
These articles explain the mechanics and creative decisions behind the series without replacing the stories themselves.
What Is GameLit and Why Kids Love It
GameLit is one of the fastest-growing genres in middle grade fiction. Here is what it is, why it works, and how it connects to the games kids already play.
Building a Magic System Kids Can Follow
GameLit books need systems that feel like real games. Here is how I design progression mechanics that are fun to read without being confusing.
How I Plan a Ten-Book Series
Writing one book is hard. Planning ten that work as a complete arc is a different challenge entirely. Here is the framework I use.
Why Every Book Has Illustrations (And How They Get Made)
Middle grade readers expect visual moments. Here is how illustration briefs become the black-and-white images in every Cole Decker book.
Common questions
Before choosing a series
How many Fortress Kids books are there?
Fortress Kids is presented as a ten-book series. The reading order starts with Siege Night and concludes with Last Stand.
What makes Fortress Kids a tower-defense story?
The characters protect a Core from enemy waves using barricades, salvage, blueprints, specialized structures, countermeasures, and cooperation between defensive teams.
Is Fortress Kids only about fighting monsters?
The Null waves create the pressure, but the documented themes emphasize building, community cooperation, creative problem-solving, and deciding what makes a home worth defending.