Slot machines often get a bad rap from gambling writers. But the truth is, slot machines are the perfect gambling activity for certain types of people. They’re easy to understand, they’re easy to play, and they offer the possibility of big winnings.

The unicorns that most gamblers are looking for in the casino, though, are the loosest slot machines. What does that mean?

When a gambler describes a slot machine as “loose” or “tight,” she’s usually referring to the payback percentage for the game. Slots with a higher payback percentage than average are loose, while slots with a lower payback percentage than average are tight. Loose slots usually have a higher hit ratio than tight slots, too.

You’ll find plenty of inaccurate information about how to find the loosest slot machines in the casino. I try to avoid most of those inaccuracies in this post, but I do want to begin with a warning:

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The probabilities involved with slot machines are “opaque.” That means you don’t have any way of knowing what the payback percentage for any particular slot machine game is. The random number generator that determines the outcomes is programmed to have each symbol come up with a certain probability, but there’s no way of knowing if that number has been set to 1/6 or 1/60. Even observing a large number of spins only provides limited insight into these probabilities.

You do know what the payouts are for the various combinations. But since that’s only half the equation, you can’t really know whether a game is loose or tight except anecdotally. I’m going to assume that anecdotal evidence has some value, but in terms of math, science, and statistics, anecdotal has no value at all.

1- Look for the Loose Slot Machines in the Locations Where Loose Slot Machines Are Found

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Casino mapping is a real thing, but it’s not as simple as some gamblers would have you believe. If finding the loose slot machines were as easy as just playing the games located nearest the walkways, everyone would play those games to the exclusion of the other games.

That being said, it might be worth giving those games a try if they look like fun. They’re not more likely to be tighter than the other machines than any other game on the casino floor.

I’ve read that some areas in the casino have lower payout machines than others, and it might be wise to avoid games in those areas. These might include:

The main slot machine floor. These games probably see the most action, so it would make sense for them to have lower payback percentages.
Near the table games. These games see more than their fair share of action, too. The same reasoning would apply.
Near the poker room. I’ve seen some gamblers swear that these are the worst machines in the casino. You have to wonder about a poker player who spends a lot of time playing slots, though.

Of course, there are other locations where the loosest machines might be located. Depending on whom you believe, these might include:

Anywhere that gets more traffic than usual. For example, if a slot machine is located near the elevators, it might have higher payouts to attract play from someone who might not otherwise play.
Anywhere that another gambler recommends. This is, of course, the classic mistake—relying on anecdotal evidence. It’s possible, though, that you might find a slot machine player who’s been paying close attention and knows where the loose machines are.

In fact, that leads me to my next point…

2- Don’t Be Afraid to Ask

The obvious person to ask about the location in the casino of the loosest slot machines is someone who works there. This isn’t a guarantee that she’ll be able to direct you to a loose machine, but she might have some insight based on her observations. Depending on how long she’s worked at the casino, she’s probably seen tens of thousands of even hundreds of thousands of gamblers over her career there. She might have noticed that a lot of them seem to be winning on slot machines in a certain location.

In fact, some casino employees even have their own favorite machines. If they play slots, they might have more insight into where the hottest machines are than you could imagine. Don’t pay much attention to the employee who tells you where last week’s big winner hit, though. That has no predictive value at all.

If you’re dealing with a cocktail waitress, it’s a good idea to tip generously. For that matter, no matter what they do at the casino, if they try to help you find a loose gambling machine, tip them. At some casinos, employees are forbidden from suggesting specific games. Sometimes you’ll find casino employees who just don’t want to be bothered with such concerns, too. Don’t be a jerk if that’s the case.

3- Don’t Play Slot Machines That AREN’T in Casinos

In towns like Las Vegas, slot machines are everywhere, in all kinds of businesses. Every bar in the city seems to have some slot machines. The airport is full of slot machines, too. You can even find slot machines in the gas stations and convenience stores.

We know one thing for certain about slot machine games in these non-casino locations:

They don’t pay out well. The payback percentage for airport slots in Las Vegas are the worst in the city. Bars aren’t much better, either. The owners and operators of these businesses figure they’re the only game in town and have a captive audience. So they set the payback percentages for those games accordingly.

Casinos, on the other hand, are competing with other casinos for the mindshare and hard-earned dollars of the casino gamblers. Since they’re in competition with the other casinos, they must offer payback percentages that are as good as their competitors’ or better.

This is one ironclad rule for finding the loosest slot machines in the casino:

ONLY play slot machines in a casino, not the slot machines in other businesses. That’s as good a starting point as any. The difference could be as significant as the difference between a 94% payback percentage and a 74% payback percentage.

Assuming you’re a conservative, low-stakes player, here’s the difference in predicted hourly loss between those 2 examples:

Assume 400 spins per hour at $1.25 per spin, for $500 per hour in action.
A game with a 94% payback percentage will see predicted losses of $30/hour.
A game with a 74% payback percentage, though, will see predicted losses of $130/hour.

If that difference doesn’t seem significant to you, what are you doing playing penny slots anyway?

4- Look for the Plainest, Most Boring Games with the Fewest Paylines

Generally, the slot machines with lots of paylines have lower payout percentages. They’re able to compensate for this psychologically by having a high hit frequency. With 25 paylines, you might win something on almost every spin, even if it’s an amount lower than the amount you wagered in total.

For example, you might be playing a penny game with a max bet of 5 coins and 25 paylines. You’re betting $1.25 every time you spin the reels. Many times, 1 or 2 paylines might win, but the payout on those bets might only be 50 cents. That’s a lot compared to the nickel you bet on that individual payline, but you bet on 25 paylines, remember?

The human brain gets just as much of an endorphin rush from a “win” like that as it does a profitable win of more than your wager. The brain chemistry can’t tell the difference. That’s why it’s up to you make smart decisions about which games you play. If you can, find an old-fashioned looking slot machine with a single payline right down the middle. It should look mechanical, even though it’s powered by the same random number generator computer program as the other slot machines in the casino.

Since such games have no bonus features or bells and whistles, the casino can afford to have them pay out more than the big fancy games. I had a lot of fun o

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