Small question about JB.
What is actually the purpose of this "currency"?
Is it just seen a play money? Just wondering because it is odd to give play money for level ups (of course there are also other rewards but JB is a part of it) .
Maybe I am missing something here, that's why I am asking.

The only thing I know about JB is that it can’t be withdrawn and also it main purpose is for testing games.
JB is a free onsite token. You can't buy them or sell them. They are free credits you can use to test out the games. We make this very clear.
I also think that JB is a kind of fake money in fake games, but they are a little different in that to play games that support JB you don't need to switch to demo mode, so JB can be used in real games with people who bet with real money, things it encourages people to test it directly and feel the adrenaline rush of playing casino with other people, for example playing Crash live, I am also happy that there is a concept like that which is different from fake money which can only be used in demo mode and to play gambling we have to change the mode.
The point is that JB is not for sale and is very useful for me. When I run out of money gambling, I usually play using my JB funds, I don't know how much JB funds I have collected and it is only used for fun when I have free time to fill my leisure time. I use JB funds in several games, but when it's time to gamble I usually use real money like BCD, I think the JB coin concept doesn't seem to be owned by other casinos or maybe there are some out there that have used this concept first.