Online Slots Guide

Slot machines have been around for over a century and although the technology that powers the games has changed significantly in that period, the basic gameplay remains the same: spin the reels, then wait to see where they land and whether you’ve won.

The easy-to-understand rules and variety of themes and features available mean that slots are among the most popular games available today. Here at, we’ve collaborated with experts from around the casino industry to bring you this in-depth guide to online slots and equip you with all the knowledge you need to play them.

Chapter 1

Slot machines have come a long way since the first mechanical one-armed bandits were invented at the turn of the 20th Century. This chapter traces the history of slot games, from Charles Fey’s Liberty Bell to the feature-filled online slots that you’ll find on today.

Chapter 2

Learn the basics of online slots and how to play them, including important concepts and features like the Return to Player percentage, wilds, and bonuses. If you’re unfamiliar with online slots, this chapter will tell you everything you need to know to play with confidence.

Chapter 3

Progressive slots offer jackpots that accumulate the more the machine is played, and this can lead to some big prizes. The payout potential means that they are among the most popular of any online casino games, and in this chapter, we explain exactly how they work.

Chapter 4

You can now find a huge range of slot games online, but despite the vast catalogue of titles to choose from, some remain more popular than others. Here we’ve picked out 15 of the most popular slots available on Find out what makes them so appealing and brush up on all their key characteristics, including RTP percentages and volatility.

Chapter 5

Playtech is one of the world’s leading slot developers and the team has lent its expertise to this chapter about the most popular slot game features. Sticky wilds, cascading reels, respins: learn how all those features and more work in this comprehensive guide.

Chapter 6

We’ve brought together some of the leading experts in the casino industry to give you their tips on how to play online slots and manage your bankroll responsibly. You’ll find advice from Vegas Aces CEO Heather Ferris, gaming journalist Nicholas Colon, and casino authors Steve Bourie and Stephen Tabone.

Chapter 7

Reading about’s biggest slot winners won’t increase your own chances of winning, but it will give you a good insight into the kind of jackpots you can play for and what it’s like to hit them. You’ll find stories of big jackpot spins and lucky streaks in this list of our biggest payouts.