legality of online crypto-gambling in countries like the UAE or Saudi Arabia, where traditional gambling is illegal, is a complex issue.
Is Online Crypto-Gambling Legal in a Country Without Gambling Laws?
Those who have restrictions on traditional gambling have the same restrictions on online gambling. The restriction is not for the version of online/offline but the restriction is for gambling. Many countries already banned a lot of gambling sites from their countries. The users of those countries can not visit from their IP though they can visit by changing their IP.