Breachwall: Network Defense

About the Game

Build it. Defend it. Keep it running.

You start as a freelance IT specialist with a laptop and a home router. Chapter by chapter you grow into the guardian of a cloud corporation on the edge of the quantum era. Attacks travel along the links of your network in real time. You decide where firewalls, antivirus, 2FA, backups and SIEM go - and what to do when something gets through.

Features

• A campaign of 5+ chapters: home office, startup, data center, cloud corporation, quantum era - and the finale is not the end of the story. Every chapter brings a new network, new clients and new threats.
  
• 18 real-world attacks: phishing, ransomware, SQL injection, DDoS, zero-days, insiders, supply-chain attacks, deepfake calls, "harvest now, decrypt later" and more.
  
• 18 defense technologies, from a firewall to post-quantum cryptography (ML-KEM, ML-DSA) and quantum key distribution.
  
• Hands-on incidents: spot the phishing email, find the odd line in the logs, pick which patches go first, audit passwords, check the settings and decide whether that voice on the phone is really your CEO.
  
• 17 tough decisions with consequences for your money, reputation and security.
  
• Contracts and research: take on clients, grow your budget and unlock new technologies.
  
• Threat Codex: every attack and defense explained in plain words. Everything in the game is based on how real attacks work.

After the campaign

• 10 challenge scenarios: short missions with star ratings, from a ransomware outbreak to Q-Day.
  
• Weekly Challenge: endless mode with a shared weekly seed and Steam leaderboards.
  
• New Game+: six modifiers that can be combined, from Storm to One Life.
  
• The wall has two sides. Finish the campaign to find out what is on the other one.

Play your way

Three difficulty levels and a tactical pause. Tutorial for newcomers. Mouse, keyboard or gamepad. Steam Cloud saves and 31 achievements.