Our data reveals that The Mirage's casino holds the highest probability of winning. It's not just their artificial volcano that's erupting nightly, because luck seems to be pouring across people's Tripadvisor reviews.
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.