The payout structures and odds of slot machines are determined by intricate mathematical principles that govern their operation. Return-to-player (RTP) percentages, which show the average amount of money that wfenzy slotsill be given back to players over time, are programmed into each machine. For instance, a machine with a 95 percent RTP should theoretically pay out $95 for every $100 wagered. However, since this number is based on millions of spins, individual players may see short-term results that differ greatly from this average. Slot machines classify their risk levels not only using RTP but also using volatility or variance.