The drop is the amount deposited by the player, and the handle is the total amount bet by a player.

These mathematical algorithms look at “the drop” and “the handle”. If this period falls over many players, it’s likely that some will have lost money and others will be upon their initial stake.Ĭasinos and game manufacturers have developed slot machine algorithms to control these RTP percentages and ensure that the casino makes money from the slot machine games, while the spin outcomes themselves remain completely to chance. The percentages are calculated over long periods, so if you were to start playing a slot game, it would be many spins later that you would be able to calculate the pay-out average.

This pay-out percentage is not applied to the individual playing, but to the game itself. For example, if the RTP of a game is 97%, then for every £10 you wager, you should receive £9.70 in pay-outs. The RTP percentage of a casino can vary depending upon various factors including location and local laws on gambling, but these percentages are often high, over 90%. This means the casino needs an advantage and that advantage is expressed as a return to player, or RTP percentage. The house does need to win to keep afloat but within that overall house win there is plenty of opportunity for winning big. The house always wins applies to slot machines but it’s not as simple as that – people would not visit casinos if that were true and so it comes down to the percentage overtime of the initial stake that is returned to the customer.

The House Wins a PercentageĮven with the advent of online casinos, Slot machines, even in virtual form remain a keystone of the modern casino’s revenue generation. The pay-out structure of these machines has evolved into the modern casino slot game that we all love. The Liberty Bell, as the machine was known, marked the start of what would become a key feature of casinos to come. It comprised a line of three reels that spun individually the machine featured a single pay line and an automatic pay-out system. This first slot machine had the look and basic features of a modern slot machine. Slot machines date back to their invention late in the 19th century when Charles Fey developed a machine in San Francisco. Slots are one of the modern casino’s biggest revenue generators.

Math used in slot machines casino