This figure shows the total amount of money that players will eventually receive back from the slot machine. Choosing slots with a high RTP is crucial if you rummy star teen pattiwant to increase your chances of winning real money because higher RTP slots typically have better odds of winning. The Risk & Volatility. Volatility, or variance, is another important factor to take into account when playing slots. This is a reference to the danger associated with playing a specific slot machine.