Spanish Blackjack is great and you would love the gameplay as well. Plus I would also recommend Slotomania and Camel Cash Casino which falls under the category of social casino games as their version of Blackjack is pretty good too.
Although I don't have any current favorite as I am new to this website and trying demo slot games for now. But I do enjoy playing Camel Cash Casino and Casino Frenzy.
I am from US. But as I am traveling most of the time so yeah, please suggest me the ones which do not involve real money, so they are not restricted in other countries as well.
If you are new to casino games you can start by playing 7Heart Casino, Camel Cash Casino, Casino Frenzy. The gameplay experience is good and easy for new users to understand and play. They also offer hourly and daily bonuses for both new and existing users. And if you are a fan of playing mini-games inside the game then you should go with 7Heart Casino, Camel Cash Casino as these are my personal favourite.