You want to open an unlicensed casino and expect traffic? Goodluck with that. Just the fact that you want to open an unlicensed casino already warrants people to NOT visit your casino. Words are empty, people want movement, actions, results. And in this case? What they want is a license. So that they can ensure that you're not just gonna run off with their money after cheating them of it.

As for opening an unlicensed casino, I'm not sure but I think you just need a reliable software provider, gambling games, secure mode of payment, and the site itself. As for any country that allows it, I don't really know. A lot of countries have been strictly regulating any type of casino that pops out of their territory so you might just get written on their list if you try and open a casino anywhere. And even if they don't notice you,trust me, you're not going to get any traffic.