SystemGuard: Tower Defense

Content rating
Everyone
50+
Downloads
Content rating
Everyone
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About this game

πŸ›‘οΈ Your system is under attack.

Viruses, trojans, ransomware β€” endless waves of cyber threats are closing in.
Build your last line of defense and protect the system alongside the Aegis Commander.

── FEATURES ──

⚑ 30 waves of intense cyber warfare
πŸ”« Unique towers: Firewall, Tracking Missile, EMP, and more
πŸ‘Ύ Diverse enemies: Splitting Virus, Speed Trojan, Rootkit, and beyond
πŸ’€ Waves 25 & 30 β€” massive boss invasions that will test everything you've built
πŸ† Unlock a secret classified message after clearing the game
πŸ’Ύ Save and continue anytime β€” pick up right where you left off

── STRATEGY IS EVERYTHING ──

Predict enemy paths. Upgrade your towers wisely. Manage your gold efficiently.
One moment of carelessness and your system will be breached.

Are you ready to hold the line?

SYSTEM GUARD β€” The Last Line of Defense.
Updated on
Apr 14, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
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Committed to follow the Play Families Policy

What’s new

v1.2.0
- New Content: Added Waves 61–80.
- New Enemies: Encounter the Phantom Packet, Adaptive Malware, and Zombie Process.
- New Bosses: Face off against the Polymorphic Virus and the Botnet.