Most high RTP slots are also high volatility slots, because the high RTP is due to massive wins from bonuses or jackpots. A high volatility slot pays out rarely, but big, and low volatility slots give out small wins relatively often. Volatility or variance indicates how often and how big an online slot is going to pay out. The average is calculated with thousands of spins, so in real life, you could lose 20 spins in a row, and lose $100 and not win cash prizes. With a 98% RTP slot, you would win on average $98 for every $100 you wager. Note that the RTP percentage of an online slot is a long-time average. They are also exceptionally important when trying to get rid of the wagering requirements for your casino bonuses. It marks the average return to player for a particular game in the long run, which means that high RTP slots are more profitable for casino players (and less profitable for the online casino sites because of the lower house edge). New slots with exciting features come out constantlyĪ slot game’s RTP stands for return to player and is the single most important metric when playing online slots. The highest RTP slots have more than 98% return to player.