Generally speaking, the pay ratio of slot machines can be seen before you start, and the pay ratio represents how much money the game developer will make in the end developing the game. If you choose a slot machine with a high reward ratio, you will be able to fight more and more bravely, without worrying about the embarrassing situation of having no chips once. The winning probability of the machine depends on how many types of winning combinations there are in the line. The more combinations, the easier it is to win, but it should be noted that the high probability of winning does not mean high odds!