Do you miss something on BrainKing.com and would you like to see it here? Post your request into this board! If there is a more specific board for the request, (i.e. game rule changes etc) then it should be posted and discussed on that specific board.
Yes, Little Golem has 13x13 Hex, and Twixt "paper and pencil" which is almost Twixt, as I explain in my post from a few minutes earlier. Both these games are also available on PBMserv. If you have the software Zillions of Games you can play Twixt online in real time with opponents who also have Zillions. There are three active realtime Hex servers: Playsite, Kurnik (also available in Polish), and Ludoteka (available in English, Spanish, French, or Basque).