The most fruitful games, when it comes to odds and cost, are the nickel and quarter slots. In June, nickel slots had a win percentage of 94.2% while quarter slots paid back 93.06%. Next to Megabucks, penny slots have the worst win percentage, returning 88.83%.

Other than the rare nickel slot machines (which only exists in old school Las Vegas casinos), the best payout comes from the $5 slot machine, according to the Las Vegas Review-Journal. Casinos had a 5.46% win percentage in 2024. In comparison, theR$25 slot machines had a 5.86% average when it came to casinos winning.