Book Series · 2 Books

The Delta Games Books

In order from The Mystery of Locked Rooms to The House With No Keys.

The Delta Games series is a set of 2 chapter books by Lindsay Currie, published between 2024 and 2025. Written for ages 8–12, most books run about 260 pages.

Where the story begins

First Book in the Series

Sale price

$1597

Book #1 · Chapter Book · Ages 8–12 · 2024

The Mystery of Locked Rooms

By Lindsay Currie

Crack the codes, find the treasure, escape the funhouse. Can three friends save their home?

256 pages· 49,609 words· Est. 7 hour read

$16.99Save 6%

Hardcover

Summary: Twelve-year-old Sarah faces losing her home after her father's illness. When her friend Hannah reveals a legend of hidden treasure in an abandoned funhouse, Sarah, West, and Hannah embark on a daring quest. The funhouse is filled with personal challenges and cryptic riddles, as if designed for them. With her future hanging in the balance, Sarah must solve the mystery and escape. Will they uncover the treasure in time, or will the funhouse's secrets trap them forever?

In reading order

The Delta Games Series

2 books · Published 2024–2025

#1 in Series

Sale price

$1597

The Mystery of Locked Rooms

Chapter Book · Ages 8–12 · 2024

Crack the codes, find the treasure, escape the funhouse. Can three friends save their home?

#2 in Series

Sale price

$1597

The House With No Keys

Chapter Book · Ages 8–12 · 2025

A new escape room tests friendships and reveals hidden secrets.

Good to know

Common Questions

How many books are in the Delta Games series?

There are 2 books in the Delta Games series. It began with The Mystery of Locked Rooms in 2024, and the newest book, The House With No Keys, was published in 2025.