This needs some treatment. Right now, it seems blocky and unpolished. May I suggest you change your "Play Now" button to just 'PLAY;' your 'Playing Now' button to 'Who's Playing;' and your "Trickly" button to a good ole' 'About' button. And maybe try overlapping your menu buttons over your box below. That would add some visual interest I think.
I would clean this up a bit. Maybe make it a little smaller. Actually, I would make the Sign-up/Sign-in a pop up window. I don't know, it is just not working for me right now. Sorry, I can't put my finger on it exactly.
I took a look at your other concepts for this website and I must say that you are certainly moving in the right direction. My only major concern, graphically, at this point is that your bullet points are pretty dull and do not match the level of activity you have above the fold.
I would also, absolutely, recommend that you include some faces and comments of your players on your homepage!!! I can not even stress that enough! before they must make one click, let your visitors know that this is legit and that people are actually winning prizes. Also, if there are any licensing needed to operate such a site, I would put that on there somewhere. (At least until your well established.)
Tell people about some of the prizes they can win. Better yet, show them! You need to supply many incentives for your visitors in order to convince them that, "Hey, this may be worth my time!"
All in All, your concept is great. I would actually be interested in playing. I do not like to gamble but since there is some element of skill at hand here, I'd give it a shot. But I would need more convincing right away.