Let It Ride was introduced in casinos in 1993, and was created by the people who manufacture those automatic shuffling machines, Shuffle Master, Inc. The house edge in Let It Ride is 3.5% for the "basic" payouts, and on the game's "bonus" pay table, the house edge can be as high as—hold your breath—36.5%. Other numbers of interest: The true odds of receiving a royal flush are 1 in 649,350, but the payout is typically 1,000-to-1. The odds of being dealt four of a kind are 1 in 4,165, but the payout is usually 50-to-1.