HI, I took a look at your site I would do a couple of things
1) What kind of gambling games? Slots , roulette, ect
2) You have a lot of words and not many images right when the person sees your site – I kind of zone out when I see too many words – I think your best casino should be on the left side ( I see you have 2 there but they look a little old – try and nice flash 240*120 from the casino your get the highest % from – plus one that allows all player)
3) Turn off the audio – seriously
4) if you are attracting free players that’s what you will get
5) use your alt image alt tag for your keyword phrase
hope that helps