I used to play that a few years ago. It's free again? IIRC, I stopped playing because it told me to update it, and it became a limited use demo when I did.
It had some cheating problems back then, I remember playing some CTF:
Emohawk(blue): #### is hacking.
####(red): I am not!
####(red): STFU
Emohawk(blue): Why do you keep respawning under the blue base then?
<no response>
It was okay though, I was spawn camping him with a grenade launcher.
