I was searching all over the internet and could not find the answer.
Are crypto casinos legal ?
Do they need a license ?
Are US and China citizens allowed to play in that casinos ?
I'm talking about casinos that accept only cryptocurrencies. (No fiat money)
All citizens can play in the casino. Even if the country is forbidden to gamble, anyone can use a vpn to access any site. In order to determine the loyalty of the legislation you need to see in which countries the existing casinos are registered and learn from the licensing and taxation terms.