Mergal absolutely anybody can join - in fact, the more the merrier. Look forward to seeing your guesses below, and there is a second game called KM links which you might enjoy as well.
I see that your name is lit up in green lights, so you're new to this site, and I expect you think we're all crazy .... but we're friendly too, and once you've got used to us ....
Welcome to the site mergal...and the game, you'll pick it up quite quickly..some of us have been playing it for ages and still can't do it!!..good luck!