That's a simple site but it works fine. Is cool to know how we can get 0.00166 daily if you invest 1 BTC, it means the investor can get more than 0.5btc/year with 1 BTC, and that sounds too good to be real :p

Since we are talking about gambling some months the casino can end with loses, and that happens when some whales win big. But most of the months the house ends with profits.

By the way, it would be nice if you add a tab with info about the project, it would be nice to know the equation you use to do the math.