It simply means that over a very long period of time with infrequent jackpots, the machine pays off at this rate (you will lose 15% to 3% of your cash in the long-run). Keep in mind that this does not mean you can only lose the amount of money the machine is designed to hold back. Online slots are designed to pay off at rates between 85% to 97%. If you just want to sit back and play in a relaxed manner, many of the casinos have a nickel bet on their slots. The amounts vary, but 10% per deposit is not unusual. Many online casinos give you bonus money when you deposit funds into your account to play. You can increase the probability of winning larger amounts by selecting $5, $10, and $25 slots, or by winning more often with cheaper slots with low to medium pay outs. However, there are some things that can be done by way of money management to affect your play. However, we give some tips later that might give you an edge in case a place has “hotter” machines that payout more often while still being within state legal testing requirements. The payout rates are regulated in licensed casinos to prevent cheating. A computer chip has your decisions already determined.
A random number generator determines if you will win or lose before you even sit down to play the machine. Slots are all luck and not based on skill.