It's mostly because the government wants their cut of the money at every possible transaction. They know that the overwhelming majority of gamblers are not declaring their winnings and most casinos don't report anything other than the massive wins and those people they already have address, bank accounts, fingerprints, etc.

You will find gambling laws in Asia vary greatly from one country to another. Two neighboring countries could have completely different philosophies.

The third round of testing casinos is done.
The results are posted below.

Casino	Restricted Countries	Active IP Ban
_____________________________	_____________________________	___________________________________________
21. CryptoThrills.io 22. Bitsler.com 23. Primedice.com 24. *BitDice.me 25. AceDBets.io 26. Duelbits.com 27. Windice.io 28. Bustabit.com 29. Tower.bet 30. BetBTC.co	No Info Available USA, France, Netherlands USA, UK, France UK, USA NO Info Available France, Netherlands, USA France, USA France, Netherlands, USA France, Netherlands, USA NO Info Available	All countries allowed according to customer support USA - YES France - YES Netherlands - YES USA - YES UK - YES France - YES UK - YES USA - YES - France - YES Netherlands - YES USA - YES France - NO USA - NO France - YES Netherlands - YES USA - YES France - NO Netherlands - NO USA - NO -

*Changes made to the results of BitDice's IP bans. More info is available here.

Primedice also blocks users from the Netherlands, so you can add that to the blocked countries for them.

Wolf.bet gives a message that players from some countries aren't allowed (for me the Netherlands) but after refreshing that page you can still enter the site.

Yes, they restrict Dutch players and several other countries like Australia, Serbia, or Korea. But I only do my tests on 2-3 locations. Testing every single country would take too much time. Some Casinos block 10, 20 or even more locations. The list would simply be too long.

I haven't looked at Wolf.bet yet. They can be part of my next batch. If they display a warning message, that's fine. If the players decide to ignore it, it's their own fault. I think the casino has in that case done the minimum that is required. It would be optimal if the players couldn't access the site altogether.

I think that the biggest concern regarding US players is that online gambling used to be illegal on offshore online casinos. I am not sure if that is still the case. I think it's only sports betting that is still illegal, but US citizens can still play casino games online.

It is all very complicated with the Americans. You have the Federal Law, than you have State Laws which differ from state to state and everyone interprets them differently. It is all a big mess and I think even online casinos don't know what is allowed and what not. So the easiest approach is to simply restrict all US players to avoid issues further down the line.

Anyone here from the US who can give us a proper insight regarding online and offshore gambling in their country?   

I don't understand the point in having IP block, when we have VPN services available at every nook and corner of the globe. Personally I am using the VPN provided by Kaspersky, which comes along with their anti-virus suite. It has a long list of IPs from dozens of different countries to select from. Even going for KYC can be ineffective. In the dark market, you can find KYC documents for as little as $10.

If you cheat and lie to the casino about where you are from, it's your own fault what happens afterwards. But if you use a VPN for privacy reasons, but you are not located in a restricted jurisdiction, that is OK.

IP restrictions show that the casinos have made some effort to prevent those who shouldn't be on their sites from signing up and gambling there. I have read stories of players from restricted countries being successful in registering at a casino, depositing money, losing bets, with no problems. But when they won something, the casinos started asking questions who they are, and where they are from. If it was discovered they were from a country whose players aren't allowed at that casino, they had their winnings/funds confiscated.

I had a look at BetFury but they don't have any info in their TOS regarding restricted countries.

It doesn't have to mean anything or it can mean everything, depends on how you look at it. Maybe they just forgot to implement it, maybe they don't care or consider it an important feature. Maybe they rely on the fact that it is the player's responsibility to read the rules and TOS and adhere to them (which it is). Or maybe they are malicious and haven't done it on purpose. Hoping that players will register and lose. In case they win, they can request KYC and other proof of who the players are and confiscate their winnings if they are from a restricted location.   

@BITCOIN4X
If online or crypto gambling is prohibited in your country, you should know that many casinos have rules that prohibits users who reside in jurisdictions where online gambling isn't allowed from playing at their site. You should check the TOS of the casinos you gamble at and contact customer support if you are in doubt. Some casinos don't allow the use of VPN software, while others don't mind it. Again, it is best to get in touch with their costumer service team to get the correct info from them.

I won't do that because I am afraid the site can catch me because of the fake document. If you don't want to fill KYC documents, you should search for the other gambling site, so you don't have to fill the KYC. The @OP already update the list, but as long as we have a VPN, we can change the IP and visit the site to playing gambling. Sometimes I use a VPN too to playing gambling, especially if I see that one site blocks my connection, and that will not be a problem for me to playing gambling on that site.

Nice list, thank you for sharing this good information to all of us, Among all the lists, Roobet is the only one that I have tried and there are so many games that is restricted in my country. Among all of the games in the slot games, only 4 games are available. I just wonder and thinking, why this thing happen or why they are banning some games for different countries, so the thing that I am doing is using the VPN but so I can try some other games.