In the demo mode, or as it is also called free play or demo game, the gambler develops his game strategy. This is done primarily by beginners who do not want to risk their money, as well as most gamblers when a new game appears and all want to understand how a new machine can win. The Demo version is different from the game for money in that you do not need to go through the registration procedure. But you can not withdraw the winnings. So this version is for training, although those who play games in demo mode, get the same portion of adrenaline, as gamblers when playing for money. Here https://mycasinosguide.com/
you can find out where and how you can play online casinos in demo mode.