Online Slots

Online Slots

Join us as we learn more about how online slots work, what exciting bonus features they offer and delve into the best tips, tricks, and strategies to make your online gambling experience entertaining and rewarding.

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Slots Overview

Over the past few years, online slots have become the most played casino game on the internet. With the advancement in high-resolution graphics, innovation in the slots features and increasingly faster internet speeds online slots developers have brought a wide selection of wonderful worlds to life on the reels of their slot machines.

This means that whatever your preferences may be in terms of design style, music, theme or setting there is a video slot for you to enjoy. Slots also offer a wide variety of bet settings, game volatilities and progressive jackpot opportunities making them a great form of casino entertainment for both new players and experienced gamblers.

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Slots Guides

We know what it is like to be a new player looking to learn the ins and outs of online slots. To help you get ahead of the curve and easily get to grips with the wide variety of bonus features, payline types and jackpots we have created a series of user-friendly guides.

Free Slots: Play Free Slots Games

We always recommend learning how to play online slots by making use of the free to play demo games. These free slots play just like their real money versions allowing you to learn their features and test strategies with zero risk. Simply pick the game you want to play for free from the list below.

Casino Matcher: Find the best casinos for Slots

If you're looking for the best online casino to play slot at why not make use of our Casino Matcher too. Simply input your requirements and the Casino Matcher algorithm will suggest the casino that best suits your wants and needs.

Slots Bonuses

Online slot bonuses are the best way to boost your bankroll and extend your enjoyment of your favourites online and mobile slots. Use the bonus selection tool below to find the best welcome and reload bonuses for you.

The Types & Variations of Slots

Given the freedom and flexibility that online slots offers game developers there are a vast number of variations in terms of themes, settings, features, paylines and more that you can choose from.


  • Real Money Slots - Nothing beats the entertainment value of playing slots with the chance to win real money. We have listed all of the best real money slots casinos for you here.
  • Progressive Slots - Progressive slots are fan favourites because of their massive payout potential. If you want to play big jackpot slots look no further.
  • Multiplayer Slots - Multiplayer slots are a great way for online gamblers to share their passion for video slots. Play as a part of group and spin to win with your new friends.
  • Slot Tournaments - Test your luck against your fellow slot fans in a series of live slot tournaments. Add a competitive edge to a game you already love to play.
  • High Limit Slots - As with all casino games there are some slot machines that allow bets per spin of up to €1000. Visit our list of high limit slots to find the one that suits your budget and playstyle.
  • Bitcoin Slots - One of the fastest growing online gambling verticals is crypto gambling. Here we have curated a list of the best Bitcoin slots for crypto gamblers to enjoy.
  • Pachinko - Looking for online slot’s entertainment with a little Asian flair? We have selected the best online pachinko machines for you to play.

Slots Tips

  1. Make the most of your bankroll – Look at the number of paylines and cost per line to ensure your bets allow for extended play and don't burn through your budget.
  2. Understand variance/volatility – A slots variance refers to the highs and lows, or wins and losses, a high variance game means long periods of losing with the potential for big payouts.
  3. Find slots with a history of frequent payouts – While wins are not guaranteed there are some slots with a history of frequent big payouts, add these to your list of games to play.
  4. Choose the best slots bonuses – Slot bonuses with low, or no, wagering requirement and do not limit withdrawals are a great way to boost your bankroll.
  5. Play progressive jackpot slots – While they offer low return to player ratios, they generally offer low cost spins with the chance to win a mega jackpot. Worth adding in a few spins to try your luck.

Slots History

If you have ever wondered why so many slot machines include playing card symbols (A, J, K, Q, J, 10) you might be surprised to learn that it is because the first ever slot machine was made using cards. The game consisted of a drum lined with playing cards, the drum was spun and landing a winning poker hand would net the player a small prize, often a piece of chewing gum or a small trinket.

The first modern slot machine with an automated payout system is attributed to Charles Fey in 1891. He replaced the complex system of poker hands the original machines used with a simple five symbol system. His now famous "Liberty Bell" slot was a 3 reel game with only five symbols - the heart, diamond, spade, horseshoe and of course Liberty Bell.

While online slots have pushed this concept to extremes, they still honour these humble roots by adding card symbols and even bells to the reels as paying symbols.

Slots Terminology

If you are new to the world of online slots some of the jargon can be confusing. We have a dedicated online slots glossary to help bring you up to speed on the meaning of terms such as bonus features, progressive jackpot, variance and other terms that you will see bandied about.

Slots Rules

While online slots appear simple on the surface it is worth your while to become acquainted with how they work and what you need to know about paylines, cluster pays, bonus features, jackpots and other important aspects of mastering the game. Our guide to online slots rules will help you play like a pro in no time.

Slots Strategy

From the start it is important to understand that online slots are pure games of chance. Each spin of the reels is determined by a random number generator which cannot be influenced through strategies or systems.

Here are five strategies to adopt when playing online slots to improve your enjoyment and manage your budget:

  • You need to spin to win - choose a bet setting that allows you to play for an extended period of time on your budget.
  • Not all slots are the same - use free slots to learn how to optimise the bet and feature settings of each game
  • Progressive slots are good value for money - with their low cost and high potential return on investment progressive slots like Mega Moolah are worth budgeting for
  • Variance and RTP matter - knowing that high variance games can run dry for long periods and that low RTP games can do the same is important in managing your budget and your headspace around slow payout games
  • Do not chase losses - slots are entertainment, set a budget you do not mind losing and simply enjoy the game. If you win then it is a wonderful addition to an already enjoyable experience.

When playing slots, it is worth keeping in mind that they are designed with overarching return to player (RTP) percentages, differences in volatility and a range of bet settings. Understanding these, and other variables, can allow you to be in the best possible position for the law of averages to work in your favour.


Can I play Slots online for real money?
Yes, you can. All the online casinos you will find here offer a wide selection of online and mobile-optimised slots for you to play for real money.

Where can I find the most trusted casinos to play Slots?
When it comes to finding safe and trusted online casinos to play slots at you have come to the right place. Here at OCR, we offer unbiased reviews of casinos we believe will treat you well and offer the best online slots entertainment.

Can I play Slots online in every casino?
Slots are a staple of the modern online casino. This means that not only will you finds slots at everyone of our selected casinos, but they will also offer a range of bonuses for you to enjoy including free spins.

Can I play multiplayer Slots online?
Multiplayers slots are an entertaining way for the online casino community to play together. However, not all online casinos offer multiplayer slots, feel free to read our in-depth casino reviews as we will note which sites have them available for you to play.

How does Slots work?
Playing an online slot is incredibly easy. All you need to do is select how much you want to bet and then hit the spin button. The slot machine random number generator will then determine the outcome of the spin and show you which paylines, if any, you have won on. It will show which symbols won and how much they were worth.

Can I play live Slots with a live dealer in real time?
Slots are an RNG-based casino game which does not really allow for the intervention of a dealer in the outcome of the game. The closest game on the market to a live slot machine is Gonzo’s Treasure Hunt Live by Evolution Gaming.

Is online Slots rigged?
No, all reputable casinos host online slots by licensed casino game developers. These video slots run off random number generators (RNG) to ensure fair play and trustworthy spin results.


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