The secret engine
Age rating: Ages 13–15 · Teens
Age rating and Christian content guidance for parents.
First published 2008
A group of friends discovers a mysterious, hidden engine that leads them on an exciting adventure.
Concern Level
Mild
Virtue Level
Present
Concern Level
Mild
Virtue Level
Present
What is Dokilit?
Dokilit is an AI-powered content guide for Christian parents. We analyse books through the lens of faith and family, then show you the concerns, the virtues, and the conversation points that matter for your home.
Things to consider
Higher = more presentNo sexual content is present in this adventure story.
Mild peril and suspense arise from the mysterious engine.
Profanity is absent from the text of this book.
No blasphemous language appears in the story.
Substance abuse is not a theme in this book.
The book does not address suicide or self-harm.
There is mild suspense related to the unknown engine.
Occult or supernatural elements are absent.
This book does not feature LGBTQ+ characters or themes.
The narrative focuses on adventure and problem-solving.
No negative portrayals of God or Christians are included.
Virtues to celebrate
Higher = stronger presenceThe friends show courage and resourcefulness in their adventure.
Christian faith is not a central theme in this book.
Friendship and teamwork are key to their success.
Themes of curiosity, exploration, and problem-solving are present.
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