Illustration of a slot machine surrounded by flying coins on a purple and green background.

Slots generate more than two-thirds of all the gaming revenue in Las Vegas. They truly are the Kings of the Strip. Our guide covers slots terminology, top tips for mastering slots, types of slot machines, and much more!

What Are Casino Slot Machines?

Slots are gambling machines that generate a random outcome. They were first invented in the late 19th century. These were mechanical contraptions with three or more reels. By the 1960s, slots had evolved from purely mechanical to electromechanical. By the end of the 1970s, the first video slots had emerged, laying the groundwork for the modern game.

Today, slots use a Random Number Generator (RNG) to determine outcomes. The RNG continuously cycles through billions of number combinations, ensuring the result is as near random as possible.

How to Play Slot Machines – Mastering the Basics

Let’s be honest: it’s not rocket science. Slots are easy to play. It’s the main reason why they are so popular. There are plenty of things that you should know about before you dive into the slots action, though. The first step is to set your budget. If there is only one thing you take away from this guide, let it be this: set a budget and stick to it. Lock up your credit cards. If it’s an online casino, get them to limit your account. Don’t chase. It never works.

It’s also vital that you know when to quit. It’s too easy to let that win roll over and spin yourself to zero. If you’ve doubled your money, collect it and enjoy it. You have a free spin on the slots if you put half of your bet back.

Choosing a slot is the fun part. There are more than 20,000 different online slots, with thousands more available in casinos. Whatever theme butters your muffin is yours to discover: cowboys, pirates, Ancient Egypt, wolves, vampires, movies, television shows, singers, and plain old fruit. It’s all there.

Types of Slot Machines

Slots have been around for more than 150 years. There are lots of different styles of games. Here are a few of the most popular:

Classic Slots

Simple multi-reel games (usually 3 or 5) with symbols: fruit, bars, sevens. You hit the button or crank the arm to play. Perfect for the beginner.

Colorful slot game display featuring fruit symbols like cherries, plums, lemons, and watermelons, with a prominent red 7.

Video Slots

These are the digital games you see today, online and at the casino. Often story or character-driven, these come in a kaleidoscope of combinations.

Screenshot of the Starburst slot game, featuring colorful gems and BAR symbols, with a spin button and betting information displayed.

Progressive Jackpot Slots

These are linked machines; a small portion of each bet contributes to an ever-growing jackpot. Megabucks was the first to appear in 1986. It’s still the biggest game on the planet.

A slot game screen titled "Buffalo Collector" displays symbols of wildlife and jackpots, set against a scenic backdrop of bison and mountains.

Multi-Payline and Megaways Slots

These slots offer up to 117,649 different potential winning combinations with every spin. The first Megaways slot appeared in 2015 and was an instant hit.

Colorful online slot game interface featuring various symbols, including animals and playing cards, with a whimsical backdrop.

Cluster Pays and Cascading Slots

In these games, there are no reels. Instead, neighboring symbols create wins. The reels often collapse, with new symbols appearing, creating more potential winning combinations.

A colorful slot machine interface featuring gemstones, lanterns, and horses, with options for betting and gameplay.

Slot Machines Key Terminology

Below, we’ve listed the key terminology that you’ll need to be familiar with to learn how to play slot machines. 

Online vs. Land-Based Slot Machines

FeatureOnline Slot MachinesLand-Based Slot Machines
AccessibilityPlay 24/7 from any location.Must be physically present in a casino.
Game VarietyMore than 20,000 titles; new games are launched weekly.Limited by physical space, a few hundred machines per casino.
Minimum BetOften as low as $0.01 or $0.10 per spin.Typically, higher minimums($0.25 or $1 per spin).
Maximum BetVaries by game and casino.Can be substantial.
RTP (Return to Player)Usually higher (94%–98%) due to lower operational costs.Typically, lower (85%–95%) to cover physical costs.
Hit FrequencyDisplayed in some games or guides.It is not usually disclosed publicly.
Bonuses & Free SpinsFrequent: free spins, no-deposit bonuses, cashback, etc.Rarely offered except for loyalty programs or promotions.
Progressive JackpotsAvailable across large online networks (Mega Moolah, WowPot).Linked locally or statewide; lower average jackpots than online networks.
Payout SpeedWinnings are credited instantly.Cash or ticket is paid immediately by the machine or casino cashier.
Sensory ExperienceSimulated with animations, sound effects, and graphics.Real buttons, levers, lights, and immersive sounds in a social casino setting.
Social InteractionTypically solo, though some games have chat or tournaments.Social atmosphere, ambient sounds, people watching or cheering at wins.
ConvenienceInstant play on desktop or mobile.No travel is required.Requires travel, parking, and time.
RegulationLicensed and tested by authorities(UKGC, MGA); fairness via RNG audits.Regulated by gaming commissions, physical machines are regularly tested for compliance with regulations.
Themes and FeaturesExtreme variety: licensed content, 3D graphics, cluster pays, bonus buys.Limited to what the casino owns, more traditional themes dominate older floors.
Game UpdatesFrequently updated with patches, themes, and seasonal events.Updates require physical servicing or replacement of machines.

Slot Machines Strategies

Like most types of gambling, there aren’t too many strategies for playing slot machines. However, some wise choices and good bankroll management can add a little win to every spin.

  • Pick the right slot: Look for high RTP games (with a return-to-player percentage of 96% or higher), decent volatility, and features that you enjoy. 
  • Understand the volatility: Low volatility means spending more time spinning and fewer wins. High volatility equates to big wins but fewer of them.
  • Use bonuses strategically: Online casinos offer bonuses. Make the most of them to max out your playtime.
  • Watch out for max bet progressives: Many progressive jackpot slots require a maximum bet to qualify for the jackpot. That can be very costly; your bankroll is obliterated in just a few spins.
  • Try slot tournaments: These are fun to play and allow you to compete for prizes with a fixed buy-in or entry fee.
  • New games: Keep an eye out for recently launched slots. They often come bundled with a bonus.

How to Play Smarter on Slots: Our Ten Top Tips

All of these tips will ultimately help you enjoy your slots experience, but each bettor will have their own preferences as to which tips they’ll prioritize over others. We hope that our guide

on how to play slot machines has provided you with all the information you’ll need to further your enjoyment of slot machines.

FAQs

How to play slot machines for beginners?

Pick a simple game, set a budget, check out the paytable, place your bet, and spin. If you’re unsure, start with free slots.

How do I pick a winning slot machine?

Look for games with high RTP and low to medium volatility for regular wins.

Is there a trick to playing slots?

No trick: just good habits, including bankroll management and game selection. Check out the slot machine tips above.

What is the 5-slot machine strategy?

A casual approach, where players spin five times per machine and move on if they don’t win, is not scientifically proven and doesn’t impact the RTP.

How do progressive jackpots work?

A small part of each bet adds to a growing prize pool. Winning typically requires triggering a special bonus and/or max betting.

Are online slot machines fair?

Yes, if you play at regulated casinos using certified RNGs.

What’s the difference between slot volatility and RTP?

RTP is the average return over time; volatility is the frequency and magnitude of those returns.

Are there any skills involved in playing slots?

Slots are games of chance, but innovative slot machine strategies and self-control can improve your overall experience.

How do slot machines work?

Slot machines use a Random Number Generator (RNG) to produce a random outcome each time you spin.

Paul Cullen
Paul Cullen

Paul started his career in newspaper journalism before exploring the emerging world of online gaming in 1998, joining Intertops in Antigua - the pioneering force behind the first online sportsbook. Since then,...