Return to Player (RTP) percentages, which show the typical amount a player can anticipate winning back from their bets over time, are what define these machines. With an RTPslots 777 earn money apk of 96 percent or more, slots are generally regarded as advantageous for players. Increasing Your Chances of Success. You can improve your chances of making money in the long run by concentrating on these high-payout machines. When choosing where to play, it's helpful to take into account not only RTP but also the volatility of slot machines.