Firstly I suggest that you would change your domain to something more accessible.
Your current address: "
http://bitcoins4free.wixsite.com/bitcoins4free/casino" is way to long and unprofessional.
Then you can create categories like Dice, multigames Casino, sportbook and research the most popular games from each cathegory.
1. Dices: PrimeDice, SafeDice, BitDice, Rolling, YoloDice,
2. Sportsbooks: Nitrogen, DirectBet, Sportsbet, Farilay.
3. Casinos: FortuneJack, CloudBet