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 game is random and arbitrary. The slots machine don’t remember wins or loses, they have no memory, so don’t try to overreach them. But there are some tips, which you can use as a basic strategy. Different slots have different payouts. So play slots with the higher payout. You want to find anything above 95%. Similar to other casino games, it is crucial to know the odds and probabilities of the machine you're playing. Before you start playing slots get acquainted with the payout schedule. Before you start playing set for yourself a losing limit. Once that limit is reached, go do something else. You will not be a winner every time you play. 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. 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. Play dollar machines if you don’t have much money. Before leaving the casino don’t forget to cash out the credits. It may seem strange but some gamblers forget to do it. Never make high bets if you play slots you have never played before.

To know what you are playing is necessary for you.
Only the correct amount of money should be inserted into a machine. Before leaving a machine cash out your credits.
Slots shouldn't be a stress for you, just enjoy. Be smart and change oyur bets according to your luck.

It is true that slots are designed to be honest and not to deceive a player. But there are some manufactures that design the slots in such a way that they can deceive players.
When the first slots only appeared cheating was impossible because they worked mechanically, with independent wheels spinning and then stopping randomly. Modern slot machines differ form the old ones greatly. There is a chip inside of every slot machine, this chip is programmed to select numbers randomly. The selected number determines the symbol which then comes out. The computer code that generates the random numbers is responsible for whether the machine is “loose” or “tight,” so gaming inspectors look at the machine’s code to make sure that a slot machine doesn’t cheat. There is a legal rate according to which the machine has to pay out. Of course it can pay lower, which happen very seldom.
Because slot machines don’t pay off with every spin, it’s difficult for customers to tell whether a slot machine’s chip has been programmed to pay off less often than is legally required. Inspectors look at brands of machines and their chips before they are installed in casinos, but they can’t inspect each machine. 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. Manufacturers can change chips to make a machine pay less as long as the inspectors have approved that particular chip.
In one of the casinos the chip was programmed in such a way that royal flushes would never come out. Or a chip that shows near misses 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. Inspectors will respond by pulling the slot machine’s chip and seeing if it is an approved chip. Manufacturers that cheat are fined or they can lose their license.