Slot machines are an extremely popular form of gambling. The premise is simple: you insert a coin, pull a lever, and reap in cash rewards if the symbols on the reels align in a certain way. Slot machines test your luck and intuition, and, despite the simple rules, they are not boring in the slightest.
Slot machines use catchy music, fun graphics, and interesting symbols to hold the player’s attention. But how slot machines work? What are they made of and how do they determine when to pay out and when to disappoint the not-so-lucky players?
- Slot placement isn’t random. Although casinos would like you to think that everything on the floor is.
- At first glance it seems online slot machines are a 100% game of chance. And they really are, at least in the terms of a single game round. However, that doesn’t mean that you can’t influence your chances by using the right betting strategy and choosing the right game to play.
This article uses advanced terminology. If you are new to slots, you may want to check out our complete glossary of slot game features.
Knowing how slot machines work is the first step to learn the best slots secrets and tips to improve your chances to win. Despite the popularity of these games, slots are not easy to beat both when you play them on the best online casinos and at land-based slots rooms.
The Anatomy of a Slot Machine
So how do slots work? In order to find that out, you’ll need to go through video slot parts. When playing a land-based slot machine, you will see the following components:
Coin Slot/Bill Slot
This is where you put your money into the machine. You can also insert a cashed-out ticket into a slot machine and spend your winnings on additional spins.
Reels
Slot machines usually feature three or five reels, but you can occasionally come across machines with as many as ten reels! Reels are the spinning mechanisms that make the vertical positions on a slot grid rotate. Each reel has a certain number of “steps” where it could stop, and each step either contains a symbol or is blank. A typical slot machine contains about 20 stops on each reel, but this can vary.
Lever
In older slot machines, the lever would actually set the reels in motion. In modern slot machines, however, the lever just triggers the casino game’s software, which, in turn, makes the reels spin.
Play buttons
Slot machines may feature several different buttons. The most common include “Spin Reels”, “Play One Credit”, “Play Two Credits”, “Bet Max Credits”, “Cash Out”, and “Request Change.”
Coin Tray
In the past, once you would hit the “Cash Out” button, your coins would cascade out of the machine and pool in the coin tray. Now, however, it is now more common for the machine to print you a cashout voucher. These are redeemable at a redemption machine or at the cashier’s cage. Alternatively, you can insert it into another slot machine (usually through the bill slot) and go for some more spins.
Payline
The payline is the horizontal line that you can see in the center of a slot machine’s screen. In order to land a winning combination, the symbols must align on an active payline. The number of paylines available can vary from game to game, but you can only win payouts on the paylines that you place a bet on.
If there are ten paylines available, and you only bet on two of them, you can only reap those two payline’s rewards. Some machines require users to pay one credit for each payline that they would like to activate. Other machines may require multiple coins to activate a single payline.
Some slot games allow players to adjust the payline’s direction, while others are fixed. Paylines can run left-to-right or take on a zig-zag shape.
If you’re also interested in how all of these parts come together, make sure to watch this How It’s Made feature on casino slot machines:
Pay Table
A slot machine’s pay table will display all of the game’s winning combos and corresponding payouts. It will also display any special bonus, wild, or scatter symbols. Furthermore, the pay table will show the game’s current jackpot and indicate whether or not the machine is progressive. You should always check out a slot game’s pay table to educate yourself on all possible wins, payline configurations, payout odds, and information for bonus events.
Displays
Every slot machine will clearly display the basic information relevant to its users. Some common displays include:
- Credits played. This display shows the exact number of credits that the player is betting on each spin.
- Credits. This will show the player how many remaining credits they have. When the display reaches 0, the player must deposit additional coins through the coin slot in order to keep playing. Keep in mind. each credit will align with the denomination the game requires. If a player is using a 25-cent machine and inserts a $10 bill, the display will show that the player has 40 credits available.
- Insert Coin. This display shows that the slot machine is not currently activated. Anybody simply has to insert bills or coins into the machine to begin playing.
- Winner Paid. This will show how many credits were won on the previous spin, which would be added to the player’s total on the Credits display.
- Error Code. This display will only activate if a slot machine is malfunctioning. It will show a code that assists a staff member in identifying the problem.
Feel free to also watch a video guide on how a casino slot machine works below:
Types of Slot Machines
There are many different kinds of slot machines, some of which can be difficult to find. Here are some types of slots that you might come across and a short guide on how they operate.
Single-Coin Machines
These used to be very popular but are now much harder to find since most slots now accept dollar bills or require multiple coins per spin. Because these machines only accept one coin per spin, the house does not rake in as much revenue during a period of time as it would when using a multi-coin machine.
However, some old-fashioned casinos still use these types of machines. If you want a more classic gaming experience, and you want your credits to last for more spins, try out a single-coin machine.
Multipliers
Not to be confused with Multiplier symbols, a multiplier machine takes multiple coins and has a payout ratio that corresponds with the number of coins that a player uses on a spin. This type of machine was introduced in 1987 and is now the most popular type of slot machine found in modern casinos.
Multiplier machines still allow players to partake in single-coin play, but often players will choose to make the maximum bet.
Buy-Your-Pay Machines
Buy-Your-Pay machines allow players to bet between 1-5 coins on each spin. The number of coins inserted is what determines the game’s number of activated winning combos. For instance, if a player inserts only one coin, 3 “bars” would be a winning combo, but not 3 cherries. On the other hand, if they insert more coins, then both combos would be considered winning ones.
You can identify this type of machine by taking a look at the pay table. If it shows that more coins unlock extra winning combos, then you know it is a Buy-Your-Pay machine.
This kind of machine is not as common as multiplier machines. Many players avoid using them because it can be frustrating when they are just one coin shy of cashing out a great combo.
Multiple Payline Machines
Most slot machines only have one payline, which is in the middle of the game’s screen. On the other hand, a multiple payline machine has more than one active payline, as its name implies. This gives players a more exciting experience and offers more win potential.
However, players will typically need to pay an additional credit to activate each payline. When a payline is activated, it will light up.
Land-based casinos’ multiple payline machines typically offer 2-5 paylines, but sometimes more. On the other hand, online machines could have 50+ paylines!
Progressive Machines
How Do Slot Machines Pay
Progressive machines are linked together by one jackpot, which can grow to gigantic proportions since it grows anytime a player inserts a coin into one of the network’s machines. When a player finally hits the jackpot symbol combination, the pool will reset. Some US gambling venues have linked together slot machines across entire states! Over the years, this type of slot machine has become very popular, since everybody wants to try their hand at winning a jackpot that would make them a millionaire.
Progressive jackpot slots have become especially popular in online casinos, and slots across various websites can be linked, as long as they use the same software platform.
Big Berthas
A Big Bertha slot machine simply refers to a machine that is gigantic and features 3+ reels. Some even feature as many as 8 reels, and each reel has 20 symbols! These machines are typically located near the entrance of a casino, to draw in attention. However, they don’t offer a great payout percentage.
Multi-Game Machines
A multi-game slot machine allows the player to switch between various games without having to sit at a different machine. For example, one multi-game machine might offer slots, blackjack, and video poker. In addition to this, multi-game machines will usually support many different currency denominations.
Other Useful Terms to Know
Hit Frequency
Hit frequency refers to how often a winning combination will land on the reels. If a machine has a high hit frequency, this means that winning combos will land more often. Machines that hit often don’t have a great payback percentage. Conversely, slot machines that have a low hit frequency will usually have a pretty significant payout rate.
Payback Rate
The payback rate, also known as payback percentage, refers to the amount of money that gamblers win, compared to how much they wager. Slot machines’ payback rates typically fall between 82% to 98%.
RNG
Each slot machine has a built-in Random Number Generator (RNG), which is an algorithm that ensures that each landing symbol is totally random and is not dependent on a player’s previous spin.
Now that you know all the details about slot machines, come try out some virtual ones at CasinoChan!
Most people look at the vast array of casino slot machines and assume they are all alike. They see a handle, a coin slot, flashing lights and figure one is as good as another. However, in making this assumption, they fail to see a lot of valuable information to help determine if they should play a particular slot machine.
Surprisingly perhaps, machines aren't all the same. The best way to separate one from another is to learn how to “read” a machine by looking at the payout schedule on the front. Let’s see what information can be found on a typical slot machine.
Casinos here in the U.S. and abroad keep several types of slot machines in play at any given time. A few you'll most often see:
Multiplier: This machine has a payout for a certain symbol and the number of coins played multiplies it. If the machine pays 5 coins for three lemons when you play one coin, it would pay 10 for the second coin and 15 for three coins played. This machine does not penalize you for not playing maximum coins. If you plan to play only one coin at a time, this is the type of machine you should look for.
Bonus Multiplier: This machine operates like the multiplier but offers a bonus when you play maximum coins and hit the jackpot. Three 7’s may pay 1,000 for one coin, 2,000 for two coins and 10,000 for maximum coins. The central question is whether the bonus is worth playing the extra coin.
Multiple Payline: These machines have more than one line of play. Each coin activates a particular line. If you hit a winner on a line that is not activated, you will not receive anything. The older machines used to have three lines but the newer video slots can have up to nine lines.
Buy-a-Pay: These are the most misunderstood machines in the casino. Each coin activates a different payout. You need the maximum coins to receive the largest jackpot.
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One example is the Sizzlin' 7s machines. This machine will pay on cherries, bars, and sevens. The sevens pay 1,000 coins. If you play one coin you collect only on the cherries. If you play two coins you collect on cherries and bars.
How To Do Slot Machines Work
Three coins are required to collect on the Sizzlin' 7s. If you hit the jackpot with one coin in you will not win anything -- do not play this machine under any circumstances unless you are playing the maximum coins.
Progressive Slots: The progressive slots take a certain percentage of the money played and add it to a pool for the top jackpot.
First and foremost, It is never wise to play a progressive machine with less than the maximum coins -- stories abound of people losing out on lesser progressive jackpots because of short coin play.
Some casinos link machines together within their own facility to offer mini-progressive jackpots.
Megabucks and Quarter Mania are examples of machines from several casinos linked together to offer 'life-changing jackpots'. It's important to keep in mind that payback percentage on lesser wins is lowered to allow for these jackpots.
All of the information you need is posted on the front of each slot machine. Before sitting down to play, taking a minute to “read” the machine will help make you more knowledgeable in determining which machines may be best suited for you.
Until next time, remember:
'Luck comes and goes...Knowledge Stays Forever.'