dice sites in general are dangerous to invest.
Just dice was an exception, but it is closed now

What do you think about Win88 Casino's invest feature on dice?
Is my BTC safe there? I got 15 BTC on invest.
Site paid me pretty well too.
Should I continue or withdraw?
I don't know about Win88.Also it is new for me that they accept investing.
But some giants like Casinobitcoin had problems, so only you can answer your question.