Let’s start with the main thing. All slot machines are machines designed to make casinos earn money. In fact, it is some kind of analog entertainment entertainment, only the payment for their use is charged not by the hour, but in a somewhat more complicated way. Video slots are designed in such a way as to return players a certain portion of the bets that they make. More precisely, they say, they retain a certain percentage of the total amount, returning the rest in the form of payments. If we talk about modern slot machines online casinos, then the theoretical return is laid in them by the manufacturer during the development of software. It can fluctuate in a very significant range. The best models give more than 98%, and the least profitable ones can return even less than 90%. (In the newest devices this indicator is most often in the range of 94% – 97.5%.) It is important to understand that this indicator manifests itself