Hawken is pretty good for a F2P. My fiances oldest digs it & isn't half bad at it. It's mech Deathmatch, but it's not a mech simulator like Mechwarrior. The controls are pretty easy to get used to.
"How is it that a lame man does not annoy us while a lame mind does? Because a lame man recognizes that we are walking straight, while a lame mind says that it is we who are limping." - Pascal