Awful game type. CTF is just never fun. It's impossible to get balanced teams, players would always drop out leaving the sides unbalanced, and it almost always ends in a stalemate or one team completely dominating the other.
This is a lua script that enhances the CTF gametype so it doesn't suck. I wrote the original CTF script, and Irons added some cool features along the way. The readme included explains everything in detail.