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How Online Slots Work

Online Slot Mechanics

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Do you know that online slots are around for a century? It's a fact that many novice gamblers are unaware of, and they are often surprised by this new fact.

With modern technology, online slots have evolved drastically for the last decade, and challenging industry developers are producing innovative slots nowadays. According to a survey, more and more gamblers play online slots than any other virtual casino game. These online slots are not only fun but also come with big winning potentials.

Are you looking for a free spins no deposit casino with an extensive slots collection?

We suggest you join Mega Reel casino for free and access the slots hub with only a £10 deposit. You can start with up to 500 free spins on Starburst after making a £10 deposit on the casino (Full Ts & Cs Apply). In addition, you can wager on your favourite slots for free with the bonus winning from the welcome offer.

Read this guidebook, and we assure you will be an expert on online slots in the next few minutes.

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What to Know Before Playing Online Slots?

If you are an avid gambler, you should already know how fun slot machines are and unlimited choices. As a beginner, we must understand that slot machines are equally popular both offline and online. These reel-spinning games appeal to thousands of players because of:

  • Easy gameplay
  • Straightforward mechanics
  • No special skills required

We have made it clear that online slots are pretty popular in the gambling world. But, do you know how they work? Many new players are usually clueless about the online slot mechanics. Yes, you have to click on the spin button only to start the game, but many other factors make slots work. So, let's get into the details of all games for you.

Basic Features of any Online Slot Game

Always start with the basics to understand any concept or, in this case, machine. Then, all the features below come together to make slot machines work. The feature involves are:

  • Reels: Imagine a slot game without a reel; all the symbols floating on the grid. The number of reels varies with every sora game. Usually, classic slots have 3 reels, while video slots are structured in a 5x4 layout like Starburst or Fluffy Favourites. You will come across 6 reels slots like Germinator.
  • Paylines: Paylines decide whether the symbols are landing on the reels from a winning combo or not. Initial slot machines have only one payline; classic slots like Mystery Museum come with 10 paylines. Following these straightforward structure slots cones the complex video slots with an extensive range of paylines that start from 10 and go up to 117,649 like Bonanza.
  • Symbols: Every slot game features varieties of symbols that usually make them unique. In the early times, the symbols were primarily fruits with the number 7. The popularity of online slots motivates developers to put on their creative hats and produce magic on the reels. Say hello to theme-related symbols like in Rainbow Riches, where the symbols are all Irish. Mustang Gold displays beautiful horses and wild west related symbols on the reels. The specific alignment of these symbols activates the bonus rounds.
  • Bets: Can you gamble without placing a bet? Every slot game has a betting range that moves from lowest to highest. Players can place bets in between the range according to their bankroll.
  • Paytable: Every machine comes with a manual, and for online slots, machines payable is the easiest way to understand the game. It displays all symbols value, bonus rounds specifications, game details from RTP to paylines.

The Mechanics Behind Slots Payouts

Besides the basic features of the online slots, there is a whole system behind the payouts. Technically all online do are using the same mechanics for their payouts.

Hit Frequency

When we say hit frequency, it describes the probability of winning. Each possible win on the slot comes with a different possibility. For example, five high matching symbols on the payline will have a lower chance than the five matching low paying symbols.


RTP or Return to Players is a percentage that determines the players winning over the long run. The percentage is based on the hit frequency of the payment of the outcome. An average RTP value in the casino market is between 92 to 97%. It means you will get £92 to £97 for every £100 wagered on the slot game.


All the online slots come with volatility which determines whether the slot is high risk or low. High volatility slots do not offer frequent win per spin, but the winnings are very high. However, low volatility slots offer frequent wins per spin but with low winnings.

Do You Know What Type of Online Slots You Like?

Online iGaming developers love creating innovative slot games exclusive in themes, bonus features, and outlooks.

Why do all these developers have heads bent to produce unique titles?

A one-word answer VARIETY! Players love variations, and one reason for slot popularity is their diversity in themes, symbols, bonus features and graphics. Here are the most common slot categories in the inline casino market. You will find tins of slot games on each category at Mega Reel casino with only a £10 deposit.

Classic Slot Machines

When we say classic, it means straightforward gameplay without any bells and whistles. Usually, classic slot machines feature only three reels and have only one payline. The symbols mostly include fruits, diamonds, cherries, bars and lucky 7s. Bonus features are limited for these slot games. Some classic slot titles to play on Mega Reel Casino are;

Video Slots

The popularity of online slots skies rickets with thematic content video slots. The graphics are usually high quality, and the developers use various sound effects to enhance the gaming experience. However, these video slots most sought after are their bonus features that increase the players potential to win big. Mega Reel Casino is a hub for video slots, and you will find hundreds of titles available for real money and free. The titles include:

Progressive Slots

It's time to take out the big guns of the online slots world. Progressive slots are the highest paying slot games that increase with every wager. A bonus round or specific symbols is your key to the jackpot. Some of the famous progressive jackpot slots online are:

  • Mega Moolah
  • Imperial Riches
  • Arabian Nights
  • Mega Fortune

Megaways Slots

The Big Time Gaming created an exclusive mechanic, Megaways, that increased players' winning chances on the reels up to 117,649 ways or more. The Megaways mechanic is not solely used by BTG but by other developers too. You will find many Megaways slot titles on Mega Reel Casino available to play after the first deposit.

From classic to Megaways, you will find an extensive collection in the Mega Reel library. You navigate for your favourite title through the search bar and pay with only a £10 deposit.

Online Slots Symbols Directory

Have you recently played a Starburst slot? Mega Reel allows you to win up to 500 free spins on the slot with a £10 deposit (Full Ts & Cs Apply).

Starburst is a space-themed slot with sparkling jewels as symbols and many bonus rounds triggered by forming specific alignment. Every slot game displays an array of symbols that are responsible for activating different bonus rounds. The symbols include:

  • Wilds: Most online slots have wild symbols that substitute all the low paying symbols with high value except scatter. The starburst logo is the wild symbol in the slot.
  • Scatter: Scatter symbols are responsible for activating the free spin round on any slot game. To trigger the free spin round, you must align matching scatter symbols in three or more numbers on active paylines. For instance, you have to spell GOLD on the reels in the slot Bonanza to get your 12 free spins.
  • Bonus Symbol: It's a highly anticipated symbol as it triggers the bonus round that usually has the maximum winning potential. Classic slots typically don't have bonus rounds. However, modern slots often give players a chance to boost their boost with these bonus rounds.

Every slot game comes with different symbols, usually contemplating their theme. For example, when playing an Egyptian theme shot, you will find pharaohs and sphinx on the reels; however, wild west themes slot decorate their reels with wild animals. Therefore, one or two symbols on the slot always represent wild or scatter. Additionally, if playing a jackpot slot, you find a valuable symbol that can trigger the jackpot bonus round.

Mega Reel casino offers players a variety of slot games with different themes and bonus features. In addition, you can register for free and enjoy many slots in our promotion section that frequently include many free spins on other slots.


*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to this slot game are subject to change at any time.