The average amount of money that a slot machine returns to players over time is represented by this number. A machine with a 95 percent RTP, for exbit starz slots casinoample, should eventually return $95 for every $100 wagered. Since they typically have better odds, players should look for machines with higher RTPs. Variance and Volatility: Selecting the Correct Fit. The volatility or variance of a slot machine is another crucial factor to take into account.