What is the Dewey Decimal number for a book of secret codes Game Boys?

It's tricky to assign a Dewey Decimal number to a book about "secret codes Game Boys" because it's a very specific topic. Here's why:

* No Single Category: The Dewey Decimal System doesn't have a specific category for "secret codes" or "Game Boys".

* Possible Options: You could consider these categories:

* 793.7: This covers puzzles and games, but it's more general than your specific topic.

* 003.5: This covers cryptography and codes, but it might not be the best fit for a book aimed at children or gamers.

* 794.8: This covers video games, but it doesn't specifically address secret codes.

Recommendations:

* Library Catalog Search: The best way to find the right Dewey Decimal number would be to search your local library's catalog for similar books.

* Check the Book Itself: If you have a physical copy of the book, the Dewey Decimal number will usually be on the spine.

In Conclusion: While a definitive Dewey Decimal number might not exist for your specific book, the options above should give you a good starting point for finding similar books or classifying it in your own collection.