As with any game of pure chance, there is no real effective strategic system for winning at slots. You will probably, of course, encounter someone who claims to have developed thefool-proof' slots strategy system but please, ignore such advice. The machines have no memory, so there is no effective way of outsmarting them. The strategy can be represented only by a number of tips. You should always be looking for the machines that have the highest payout. Play slots with the payout above 95%. Like other casino games it is very important to know the odds and probabilities of the game you are playing, the same thing with slots. There is a payout table for each slot, so make sure you read it before inserting coins. Before playing decide how much you can spend this day. If you are more likely to exceed this limit you’d better give up the game. When playing remember that you can win as well as lose. Try not to spend all of your time on a machine that isn't paying out. Don’t be afraid of making higher bets if you are on a lucky streak with this very machine. When you're slumping, bet less. Find a machine that suits your bank-roll. If you have little money you’d better paly dollar machines. Cash out the credits you’ve won before leaving the slot machine you’ve been playing. Sounds obvious, but a lot of people forget! Never make high bets if you play slots you have never played before.

There are a lot of myths and superstitions about slots.
You can spot a winning slot machine.
The only way one can say that theslot machine is a winning one is only to catch this moment, when the machine pays out. Slot machines use random numbergenerator and that's exactly that. Random.
Casinos place loose slots near the cashier, aisle ways, etc.
If this were true, it would be the only machines anyone would play. A casino mixes slots all over the casino floor. No one with any experience at playing slots would make a statement like this.
Count the number of symbols on the reels to determine your odds.
It is a rude mistake. RNG decides when the machine will stop and there are thousands of combination available on a 3 reel slot machine.
Casinos can tighten or loosen slot machines from the back office.
In order to change how a slot willpay out is by changing the computer chip. No casino can just flip a switch.
A slot machine that has not been paying is due to hit.
It is not so. With every game the chances of winning are the same.
Pulling the slot machine handle produces more wins than pressing the spin button and visa versa.
It is also a mistake. These things are only mechanisms for beginning the game. The machine knows whether you win or lose before the symbols begin to stop.
Playing with hot coins improves your chances.
It is false. Nothing can affect the outcome, the machine doesn’t care and doesn’t know whether your coins are cold or hot.
Casinos set slot machines to payback more on the weekends.
One more rude mistake. The chances and odds are always the same. It doesn’t matter when you play.

The US
In the United States the availability of slot machines is regulated by governments. Many states have established gaming control boards for regulating the possession and use of slot machines. There is only one state that has no significant restrictions against slot machines - Nevada. New Jersey allows only hotel casinos operated in Atlantic City to have slot machines. Several states allow slot machines only on licensed riverboats or permanently-anchored barges. Only three horse tracks are allowed to have slot machines in Delaware. They are regulated by the state lottery commission.

Native American Casinos
Slot machines are forbidden in Native American casinos located in reservations. It is permitted when the tribe first reaches a pact with the state in which it is located. The state is entitled to receive a fraction of the gross revenue from slot machines by the pact.

Classes Of Slots
There is no federal law governing slot machines. There is no universal classification for all states. Some states have restrictions on the type of slot machines that can be used in a casino or other gaming area. A centralized computer system operates "Class III" (or "traditional") slot machines. The possibility that a player wing any payout is the same with every play. There are a lot of Class III slots in Nevada or Atlantic City. They are sometimes referred to as "Vegas-style slots".
There are "Class II" slot machines ("video lottery terminals" or "VLTs") which are connected to a centralized computer system. The determination of the outcome of each wager is fulfilled by it. The chance of winning a series of limited prizes is equal for each machine. The casino pays a fee to the state for each Class III game. The state doesn't regulate Class II games so tightly.

Class II Game Characteristics
The player is playing against other players. Their competition is for a common prize. Each game has a winner. The game is continued until someone wins. A given set has a certain number of wins and losses. The combimation can occur again only after a new batch is initiated. The games are dependant on each other. The player is an active participant of the game. All players play from the same set of numbers as the numbers are announced.

Class III Game Characteristics
The opponents are the player and the house. The previous games don't influence the following ones. Any game has any possible outcome.

Slot Clubs
In American casinos there are "slot clubs" the membership of wich is free. They return a small fraction of the amount of money that is bet in the form of comps (complimentary food, drinks, hotel rooms, or merchandise). The cards are used to insert into the slot machines in these clubs. Comps or "cash back" from these clubs can make significant differences in the maximum theoretical returns.

Slots In Australia
One of the most popular Australian poker machine games is Queen of the Nile. Australian slot machines are called Gaming Machines. Australian-style gaming machines have video displays for stimulating physical reels. There are usually five of them. There are laws regulating the use of gaming machines in Australia which are created by State governments.
Not only casinos but also pubs and clubs in some states have Gaming machines. New South Wales was the first state to legalize this style of gambling. The year of 1956 was the year of their legalization in all registered clubs in the state.
Only particular forms of gaming machine are permitted to be used in Western Australia.

Slots In The United Kingdom
Row of old fruit machines are usually known as fruit machines, one-armed bandits and AWP in Britain. Fruit machines can be met in pubs, clubs, arcades, and some take-away food shops. These machines commonly have 3, but can be found with 4 or 6 reels with around 16 or 24 fruit symbols printed around them. These reels are spun. If certain combinations of fruit appear, winnings are paid from the machine. There is similarity between these machines and slot machines seen in casinos and elsewhere around the world. These games have lots of extra features. There exists a strict jackpot limit. Fruit machines in the UK also almost universally have the following features. There is an opportunity for a player to hold one or more reels before spinning. The chance of winning is sometimes increased. A finite number nudges following a spin is given to a player. The term nudge is used to denote a single-step rotation of a reel of the player's choice.
The type and the location of the machine influences the maximum payout for an individual game. Private members' clubs are allowed to have "club machines". They have higher jackpots and are allowed to charge more per game.
These machines also operate in a different manner to American slot machines. The probability of getting the jackpot in each game is independent of any other game.
The AWP fruit machine is popular across Europe and in countries such as the Czech Republic, Russia, and Ukraine.

Japan
Pachisuro is the name for Japanese slot machines. They originate from the traditional Japanese pachinko game. Slot machines have appeared recently. Pachinko parlors and the adult sections of amusement arcades, known as game centers have them.
IC chips regulate the machines. They have six different levels changing the odds of a "777". There is a variety of slot machines but there exist rules and regulations for all of them.