The gaming machines have been manufactured so that they always pay a certain percentage of past bets. This is also called the payment rate. Each machine has its own ratio, which can be read by the players. Often it is the device or the display of the selected machines. There also exist casinos and gambling halls, in which the quotient is asked for.

The amount of the payment rate is usually dependent on the state guidelines. But usually it ranges from 60 to 95 percent. With so-called online casinos have also in some cases, a payment rate of 98 percent.

In most casinos pay the automatic 90% of the stakes again. Thus, the probability of winning is pretty high on these instruments. Nevertheless, it is important to note that the operator is the biggest winner. Because in theory, a unit charged with 90% payout of a bet amount back only 90 euros from 100 euros. Thus, the operator wins in this example, Statement 10 €.

 In general, the gains for this fall but still higher. Because slot machines have a known probability calculator, which ensures that the maximum payment rate reaches 90% only at the highest possible number game.

The probability calculator works as follows: After the game was finished, the machine checks whether a profit is present or not. Thus on the one hand, the controlled distribution of profits and continue to be taken to ensure that a profit is not too often occurs.

Of course, the probability for a small or medium income is higher than for a higher one. Many experienced players have already acknowledged that playing on these instruments is actually not a game but a bet. Because the player is thrown money at the odds.

Many think that the game play is based entirely on chance and therefore has the same probability of each winning class. This assumption is obviously wrong, because otherwise the operator could not afford to make these machines are available. Finally, ensure that the probability is higher for a defeat of the player, so that the operator has also recorded revenue. From the money raised, he must again pay the regular maintenance costs and to finance other spending.

Each slot machine is different: for one will be paying more gain than the other. A common element is that in slots 'units' or 'points' counts. For example, if player 1 cent stake, is equal to 1 unit. If he is with a certain combination earns 200 units, which is 2 euros. In gambling, you can usually have from 20 cents a slot machine play.