Gambling for any kind of legal tender is actually illegal in Japan. You need to understand that it is completely illegal for you to gamble in Japan. Whenever you’re there, do not gamble even on online websites with a VPN. You can play on slot machines, and also, you can play on video poker machines. These machines are allowed in Japan after a lot of scrutinies. The Japanese have outlawed a lot of gambling activities for a lot of reasons. But, after a lot of battles in court, they are allowing casinos to be built, and they are going to be attached to resorts