You have just been employed by an underground organization called [x]-K Corp. They have assigned you 12 hacking missions, which you must complete without getting caught.
You have 8 tools/ commands to help you accomplish this, including DNS lookup, PING, NMAP, and TELNET. Hack into the server by looking up the IP address, searching for open ports, then using TELNET to connect. Log in as 'root' and use John the Ripper to find the password. Once you get in, you must find, delete, or copy any files you need to complete your mission. Before leaving, you must all traces that you were there. You must do this fast, because if you take too long they will trace your IP and you will fail the mission!
Just don't expect to be playing this game for too long, because it will get boring fairly fast. All the servers are the same, so you end up doing almost the exact same thing over and over. But other than that, the game is pretty cool and creative. So if you've ever gotten the urge to hack but didn't want to risk going to jail, this is the game for you.