In my opinion, I don't so that there will be any alternative to gamble. It's can be called is practice for newbie gamblers. Besides, I also don't think any professional gambler would waste their time here for only entertainment. I also think that this cann't call as gambling it can be called as game
Indeed, exact gamblers will do gambling activities to earn money, and they will not be interested in fake money as only entertainment. The fake money may be suitable for beginners that are learning exchange about gambling but have no money for gambling. And I also do think that even they are not professional gamblers, they will not prefer using fake money because they really want to use the rewards to cash out money and do gambling again, moreover to addicted gamblers, they will not pay attention on it.