Defend the Crown and secure your secrets from devious cyber ninja tactics. Place clever cyber defenses at strategic points around your castle and prepare for attack!

Cyber ninjas are trying to raid your castle and steal your valuable secrets. Stop them at all costs and Defend The Crown!

Defend the Crown is the pilot game for an upcoming series of educational games focused on cybersecurity.

Develop and apply a basic understanding of cyber attack and defense strategies over 3 stages and 18 levels that challenge your wits.

Protect your castle from invading ninjas by placing defenses at strategic locations to combat attacks and protect your resources.

Try to survive three key stages of cybersecurity attacks:

Build up your tower’s defenses and learn how to defend against growing waves of crafty cyber ninjas.

Carefully position your defenses, layering them to prevent your enemies from advancing and stealing all of your assets.

Stop damaging cyber attacks from breaching the most secure parts of the castle where you hide your precious secrets.

Expand your cybersecurity education by using the Almanac as a guide for how to effectively defeat the ninjas. Learn about ninja strengths and how to combat them by targeting their weaknesses. Layer your defenses by matching the most effective defender available against the nefarious tactics of each cyber attacker.

Choose your defenders and manage resources carefully. Your castle depends on allowing trade to flourish through market stalls and arriving boats. Be careful as these resources can be exploited by attackers and your wealth can dry up fast.

Quick-witted and strategic defenses are the key to securing resources that allow your kingdom to prosper.

Just like defending your castle, cybersecurity requires a layered defense approach to protect your system from an outside threat. Multifactor authentication works as a strong defense against brute force attacks, while user training is a better tool to defeat phishing attacks. Combining multiple cybersecurity techniques will better protect your valuable assets.

Effective cyber defense principles are employed in this game. To learn more about careers in cybersecurity, visit

Do you have what it takes to be a cyber defender? Fare thee well!

What’s New

Version 1.0.2

- Fixed a bug where enemies were dealt a killing blow but continued living and got stuck in a bugged state.
- Fixed the Heavy Archer being introduced as a new enemy instead of a new defense.
- Updated combo cards for the Archer and Heavy Archer to better indicate their strengths.

Ratings and Reviews

4.9 out of 5
31 Ratings

31 Ratings

Marn_Dogg12 ,

Hands on Learning Experience

This was a great way at explaining what protocols are best at defending against attacks. I had a great time learning about these.

There were a couple of errors in the game where the Advanced Cyber Defense (Heavy Archer) was labeled as a new enemy when they are settings for improving your defense settings. And I couldn’t tell if the mirror magi was supposed to be named that, or if it was supposed to say mirror mage?

Other than that it still was a great experience to learn for visual learners.

Patrick--- ,

Fun free educational game

This is a cute and entertaining game for teaching kids (or maybe even adults) the basic concepts of cyber security in the format of a tower defense game. It’s easy to follow and well implemented. Nice to see something like this that isn’t full of ads or in-game purchases.

Scottgod ,

Cyber gaming - love it!

What a great way to increase common term exposure and grow concept understanding that can be applied to everyday cyber defense. Excited to see how games like this will be applied in educational and training sessions, plus used to generate future career interest in the field.

App Privacy

The developer, U.S. Department of Homeland Security, CISA, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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