their so many site offering that and it matters on which site you would choose and try to go on big sites since i believe that they are the one who can safeguard your money against to scam gambling site who just want to get some money to their investors.
My best pick for now is bitdice,bitvest,crypto-games(dunno if they still accepting investors) or might just scroll down on those buried threads where you can find great info's to your inquiries.
Although there are many new perspective casinos now and maybe it is better to invest in them (but you risk more, of course).
Or investments in old profitable casinos in altcoin's bankrolls can be made. Thus you invest in a lower bankroll but have a risk of the currency falling down.