There will be XMR version soon so it will be easier for people who wants to play with lower amounts but currencies will not be mixed.
After logging out, funds are transferred to the return address and then to start a new game it is required to start the deposit process again.
How about ZEC or DASH for the future?
Privacy Coins Market Cap & Dominance Chart and the
Full ListZEC, DASH and XMR are the biggest privacy coins and in the future, if your website expand to ZEC or DASH, I gamblers who care about their privacy would appreciate it.