There is hardly any strategy that can be applied to slots. Never believe if somebody says that he has an incredible winning strategy. The slots are casual, there is nothing that can influence the outcome of the game. The slots don’t have memory, that’s why it is not wise to try to outwit them. But there are some tips, which you can use as a basic strategy. Try to find something above 95%. When playing slots you must always know the odds and probabilities of the slot you are playing. Make sure you know the payout schedule before you start pumping in your virtual coins. Determine your losing limit for the day. Once that limit is reached, go do something else. It is not wise to think that you will be a winner all the time. You will lose too. Don’t think that machine will feel guilty if you insert a lot of coins and get nothing back. If you think that the machine you are playing will hardly pay anything out you’d better stop playing it. If the machine pays out good you’d better make higher bets. Don’t make high bets if you are not very lucky with this very slot machine. Play the slot machines that your bankroll can afford. Look for a dollar machine, and have some fun. 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.

Know what you are playing.
Always make sure that you insert the correct amount of coins into a machine. Always cash out your credits before leaving a machine.
Only if you have fun your gambling won't be stressful. If you feel lucky increase your bets and vice-versa.

Slot machines are honest because state gaming commissions make sure they are. However, in the past certain manufacturers have been caught using computer chips that cheat the customer.
In the old days, slot machines worked mechanically, with independent wheels spinning until they each stopped randomly. Modern slot machines differ form the old ones greatly. Now the integral part of any slot machine is a chip, which is programmed to select numbers randomly. After selecting a number a corresponding symbol appear on the screen. There is a computer code. It generates the random numbers and determines whether the slot machine is loose or tight. The gaming inspector will examine the machine to make sure it will not deceive the player. That is, inspectors make sure that the machine pays off at the legal rate or better.
It is next to impossible to say whether the chip is programmed not in a right way because the machine is not supposed to pay out with every spin. The machines have to be examined before people begin to play them. Of course it is very difficult to examine every single machine, that’s why inspectors examine only brands. Once inspectors approve a brand of machine, the manufacturers can make changes to individual machines as long as the changes fall within the legal bounds. Some dishonest manufactures use the right to produce machines, but use a different chip, which is programmed to pay less or not so often.
There is an example when there was inserted an illegal tip which doesn’t allow royal flushes. Similarly, Universal Distributing Company was caught programming machines to show a “near miss” of a jackpot. One the one hand the machine would never have a jackpot and the player would keep on playing. If you think you’re playing a machine that is not honest, you can complain. Be sure that inspectors will examine this very machine and the casino itself to make sure everything is ok. Manufacturers that cheat are fined or they can lose their license.