Sigma Derby takes quarters, available at the casino cage. When the Sigma Derby machine fills up with players, it’s one of the most exciting games in any Las Vegas casino. Sigma Derby machines made their debut in 1985, and up to 10 players can place bets on their favorite mechanical horses. This throwback machine is one of only two still operating in Las Vegas (the other is at MGM Grand).

While you’re at The D, make sure to check out a truly distinctive slot machine, Sigma Derby. Related: Five Ways to Improve Your Mojo Before Gambling in a Las Vegas Casino Sigma Derby at The D The D’s slot machine and neon were installed when the Fitzgerald’s rainbow was removed in 2012. Besides, once you’re inside The D, you may never want to leave.) Hey, Las Vegas casinos know what they’re doing! (Don’t freak out, there’s a down escalator inside. You’ll notice the escalator only goes up, into The D. On the exterior of the casino’s second floor is a larger-than-life slot machine, complete with a moving “arm.” Get a closer look by taking the escalator up to the second floor. You know, the kind that take and pay coins, rather than paper. The second level of The D Las Vegas, formerly Fitzgerald’s, is dedicated to classic slot machines.

Unless you know where to look, you might just miss this one. Early slot machines often paid out golf balls, gum, candy or cigars. These gorgeous relics of a bygone era are art in their own right. There’s even a slab of the Berlin Wall in one of the hotel’s restrooms! The hotel also has a collection of classic slot machines on display, just a few feet from the hotel’s registration area. The Main Street hotel houses surprises at every turn, including rare antiques and art from around the world. The candle typically denotes the denomination of the machine. Only in Vegas, baby! SlotZilla even has a “candle” on top, just like real slot machines. This one-of-a-kind slot machine has video screen “reels” and a massive, animated arm, simulating a true slot machine experience. Guests can fly down the Fremont Street Experience on two levels, the upper Zoomline (114 feet up) or lower Zipline (77 feet up). The SlotZilla zip line is the world’s largest slot machine, standing a towering 128 feet tall.

Not surprisingly, we’re starting with the biggest, baddest slot machine anywhere. We’ve gathered a few we consider must-sees during a visit to downtown and Fremont Street Experience. Slot machines are everywhere in Las Vegas, but in downtown Las Vegas, there are some that truly stand out.

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