I think your confusing terms. My position on this debate is about the morality of gambling, not its legality. In my country, gambling is mostly illegal, yet there's a national lottery. To make things worst, on the legal side of this issue, there are casinos too. Nevertheless, they operate on a legal technicality, treating all the games as a sort of lottery, which are not illegal. So, in the end either with hard or crypto currency, it's your own moral decision to risk it by playing.