Popular slots like Starburst and Book of Dead boast a high 96% RTP, increasing average slot machine odds and chances of winning.IGT, Novomatic, Bally, Aristocrat offer a huge list of online slot machines with the best odds of winning, such as China Shores, Wheel of Fortune, Buffalo, Fire Red. Progressive offers life-changing jackpots but often have lower RTPs than non progressive slots. Influences on the odds of winning at slots partly depend on the random number generator (RNG), which ensures fairness and impartiality. In popular online slot machines with best odds, the RTP may vary. Research indicates that online slots have an average of 95% RTP, meaning players expect to win back 95% of their wagered amount over time. The chances of winning slot machines online vary significantly based on several factors. Prediction & Chances of Winning Slot Machines: Average Slot Machine Odds by Popular Games