FlagHack Arena

Free multiplayer hacking game where players attack other players networks using realistic commands and security concepts.

Enter a multiplayer cybersecurity arena where every network is both a target and a fortress. In FlagHack, you build and defend your own infrastructure while searching for weaknesses in the networks of other players. Scan services, investigate vulnerabilities, plan your attack path, capture flags, and strengthen your defenses before rivals break in.

FlagHack transforms cybersecurity practice into an active, competitive game. Instead of completing disconnected challenges, you take part in scenarios inspired by real security workflows - from reconnaissance and identifying exposed services to exploiting weaknesses and protecting compromised systems.

Use an interactive network map to explore devices, services, connections, and potential weak points. As your skills improve, you will become better at recognizing threats, choosing targets, and defending critical assets.

The FlagHack Shell gives you a hands-on terminal-style environment where you can practice realistic commands and security concepts through gameplay. Learn by doing as you examine networks, use offensive security techniques, and develop the problem-solving mindset required to succeed against real opponents.

The game is free to play, includes no pay-to-win advantages, and resets regularly so every new season offers a fresh opportunity to climb the rankings.

Build your network. Find vulnerabilities. Capture flags. Outsmart your opponents. 

Play directly in your browser or install as PWA.