@XRPBust. But why would you want me to use an inferior and a less accepted cryptocoin to gamble? If I want to use XRP just to gamble, I would have to go to an exchange and use my bitcoin to buy xrp, then after gambling, convert it back again to bitcoin.
Why not use bitcoin? It is better and more merchants accept it.
Your question is valid and that's why most of the big gambling sites always start with bitcoin to gambling and slowly they will add other altcoins.
Using Bitcoin to gamble is the same as using XRP to gamble

You can get both on the most popular exchanges (binance, bittrex) .
Playing game may be same but just to gamble on your exchange not many people are interested to convert their BTC to XRP and it also adds additional conversion and transaction fee cost to players. So you may consider providing a conversion facility on your site for better convenience.
We will be working to add a quick conversion method from any coin to XRP , The reason the game is XRP only is because there is a popular version of this site called bustabit and all we did was convert it to use XRP. I know this may not be the best place to advertise a XRP site but Ripple has one of the biggest community's aside from bitcoin.