This implies that the result is always unpredictable regardless of how many times a player spins the reels. Every slot machine also has a Return to Playeindo slotsr (RTP) percentage, which shows how much money players can expect to get back on average over time. For example, a slot machine with a 95 percent RTP should theoretically pay out $95 for every $100 wagered. Remember that this is a long-term average, though, as individual sessions can differ significantly.