Read this Mansion Casino online slots guide to discover how to play these popular online casino games including the basic rules, tips and strategies, special features, different types, expected payouts, mobile compatibility, where to play free online slots or the best online casinos for real money slots and more.

1

18+ New Customers only. GB and ROI only. Use promocode: casino50 Minimum deposit & wager £25 on Drops & Wins slots required. 50 x 10p free spins on Big Bass Bonanza valid for 7 days, winnings capped at £500. Wagering must be completed within 24 hours of registration. Restrictions + T&Cs apply.

2

New customers only aged 18+. Minimum deposit £10. Get a Casino Bonus matched to your first deposit, up to £100, after you stake £20 on slots, credited within 48 hours. Bonus expires in 7 days and has a 40x wagering requirement. Additional T&Cs apply. Please bet responsibly.

3

New customers & 18+ only. Min. deposit of £10. Qualifying real money bet of £10. Min odds greater than or equal to 1.5 required. E/W bets excluded. Offer credited within 48 hours. Additional T&Cs apply. Please gamble responsibly.

4

#AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18, Please Gamble responsible. BeGambleAware.org

5

New UK customers only, 18+. To qualify you must make a minimum deposit of £25 and wager a minimum £25 on slots in the promotional period and within 24 hours of Sign Up. The spins will expire in 7 days from date and time of issue. Winnings from bonus spins must be wagered 10 times on any slots before the winnings can be withdrawn. Full terms and Bonus terms apply.

6

Sig.T&C's: First-time depositors only (18+ country restrictions apply). Min deposit: £10. Max offer: £20 Games Bonus & 100 Free Spins (on a game of our choice). Promo code: SPINIT. Spins are valid for 7 days, FS winnings capped at £10. FS wins granted in GB after all FS used. GB must be wagered 35x. Max Games Bonus win cap: £100 + value of initial bonus. Any outstanding vouchers (free spins or bingo tickets) will be removed from players’ accounts if they haven’t logged in, in 5 days. Country restrictions apply. 18+. General withdrawal restrictions apply and full T&Cs apply. Valid until further notice.   View Full T&Cs

7

#ad. 18+. Gamble Responsibly. Begambleaware.org. 18+. New players only. Min deposit £20.  bonus 100% up to £25 on 1st deposit. 50 spins on specific game only on 2nd deposit. 35x wagering applies, within 21 days. Max wins from spins £100. Spins expire after 24 hours. Full T&Cs apply.

8

New UK based customers only. You must opt in (on registration form) & deposit £20+ via a debit card to qualify. Offer valid 7 days from registration. Welcome Bonus: 100% match up to £100 on 1st deposit. 50x wagering applies (as do weighting requirements). Free Spins: Awarded on Gold Blitz once you have staked £20 on any Global Game. Spin value = 10p. No wagering requirements on free spin winnings. 

9

New players only. 18+. Min deposit £20. 40x wagering applies to match up bonus. Offer valid for 24 hours. 25 Spins on Starburst - 40x wagering applies to Spins.

10

18+ new players only. Min deposit: £20. Max £100 bonus. Max bet with active bonus: £2. Wagering required 100% match bonus: 30x deposit + bonus. Max win from welcome bonus: £500. 100 Free Spins are given out 20 per day on Book of Dead for 5 days in a row. Max Free Spins winnings: £100. Free Spins winnings credited as bonus money with 45x wagering & 3 days expiry. Deposit bonus & Free Spins wins are forfeited 30 days after bonus is credited if the wagering is not met. Game weighting and restrictions apply. Play Responsibly www.begambleaware.org

11

18+. New players only. Min. deposit £20. Max. bonus 100% on 1st deposit. 66 spins on Big Bass Bonanza on 2nd deposit. 35x wagering applies, within 21 days. Max. wins from spins £100. Spins expire after 24 hours. Full T&Cs apply.

12

Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Min. deposit: £10. Game: Rich Wilde and the Book of Dead, Spin Value: £1, Max Free Spins: 100. WR 60x free spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the free spin winnings amount or £5 (lowest amount applies). Spins must be used and/or Bonus must be claimed before using deposited funds. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies.

13

18+. New Players Only. 100% Bonus On First Deposit Up To £50 & 50 Bonus Spins (30 Spins On Day 1, 10 On Day 2, 10 On Day 3) For Book Of Dead Slot Only. Min First Deposit Of £10. Max Bonus £100. Max Bonus Bet £5. Max Bonus Cash-Out £250. 40x Wagering Requirements. Bonus Expiry 30 Days. Bonus Spins Expiry 2 Days. Game Restrictions Apply. Further Terms Apply

14

New Customers only. Opt-In Required. 100 Spins awarded on God of Fire, valued at 20p per spin. Spins awarded on 1st deposit of £20+. 30x Wagering applies as do weighting requirements. Debit card deposits only. The offer is valid for 7 days from your new account being registered. Irregular gameplay may invalidate your bonus - Full Terms apply

15

This promotion is for new customers only. Customers must be 18+. Customers must be residents of the UK/IE.

16

New Players Only. Wagering occurs from real balance first. 50X wagering the bonus. Contribution may vary per game. Available on selected games only. The wagering requirement is calculated on bonus bets only. Bonus valid 30 Days from receipt. Max conversion: 3 times the bonus amount. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms Apply.

17

Sig.T&C's: First-time depositors only (18+ country restrictions apply). Min deposit: £10. Max offer: 200% Bonus up to £20 Games Bonus & 50 Free Spins (on Fruit Blast). Promo code: SLOTS50. Spins are valid for 7 days, FS winnings capped at £5. FS wins granted in GB after all FS used. GB must be wagered 35x. Max Games Bonus win cap: £100 + value of initial bonus. Any outstanding vouchers (free spins or bingo tickets) will be removed from players’ accounts if they haven’t logged in, in 5 days. Country restrictions apply. 18+. General withdrawal restrictions & full T&Cs apply. Valid until further notice. View Full T&Cs

18

18+ New Customers Only. Opt in, wager £10 on selected games, in 15 days. Get £30 in Bonuses (40x wagering) for selected slots + 10 Free Spins for Big Bass Splash (max x2) after each £10 deposited and wagered within 15 days, up to max £60 in Bonuses + 20 Free Spins. 30 days expiry. Max redeemable £1,500. Card payments only. T&Cs apply, see below. begambleaware.org | Please gamble responsibly.

19

Welcome bonus for a new players only | Maximum bonus is 100% up to $/€/£ 100 | Min deposit is €10 | No max cash out | Wagering is 40x bonus | Maximum bet while playing with a bonus is €5 | Eligibility is restricted for a suspected abuse | Skrill and Neteller

20

18+. New UK/IE customers only. Sign up via a recognised affiliate partner using promo code 'STARSPINS'. Deposit and wager a minimum of £20 on slots to receive 50 free spins on Big Bass Splash, credited by 12pm GMT the following day. 10 x wagering before winnings can be withdrawn.

21

Terms and conditions apply. New players only. 18+. Min deposit £20. Spins available for: Book of Dead. Wagering requirement apply 35x. Offer valid for 24h.

22

New players only. Opt-in Required. Only for UK Players. Wager from real balance first. 50X wager the bonus. Contribution varies per game. selected games only. Wager calculated on bonus bets only. Bonus valid 30 Days from receipt/ free spins valid for 7 days from issue. Max conversion: 3x the bonus amount or free spins: $/€/£20. Excluded Skrill deposits. Withdrawal requests voids all active pending bonuses. Full Terms Apply.

23

New UK customers only. 125 free spins on Big Bass Bonanza (£0.10 per spin) credited after successful £10 deposit and £10 stake on Casino, Vegas or Live Casino. No wagering requirements on free spin winnings. Debit Card deposit only (exclusions apply). This offer is valid 7 days from the new account being registered. 18+ BeGambleAware.org. Bet the Responsible Way. Full terms apply.

24

New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit.18+. Free Spins: on MONOPOLY Paradise Mansion. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply.

25

#AD New players only, min deposit £10, wagering 45x, max bet £5 with bonus funds, 100% up to £100 bonus on 1st deposit. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Full T&C’s apply

26

New players only, 18+. £10 minimum deposit. 40x wagering requirement. £5 max bonus bet. £250 maximum cashout for each individual bonus. Bonus will expire in 30 days. Free spins will expire in 48 hours. Full terms and Bonus terms apply. BeGambleAware.org.

27

#ad. 18+. Gamble Responsibly. Begambleaware.org. 18+. New players only. min deposit £20. Max bonus £5. Winnings from spins capped at £50. 100 Zee Spins valid on Starburst (first 10 credited immediately upon first deposit; rest credited at 07:00 GMT at 10/days). Spins must be used by 23.59 GMT of the day on which they are credited to player account, any unused shall be removed. Bonus funds must be used within 30 days. Bonus funds are separate to cash funds, and subject to 35x wagering (bonus + cash). Full terms apply. BeGambleAware.org

28

* New customers only. Opt-in required. 100% Match Bonus up to £50 on 1st deposit of £10+. 50x bonus wagering applies as do weighting requirements. Debit Card deposits only. Irregular gameplay may invalidate your bonus. This offer is valid for 7 days from your new account being registered. Full Terms apply. Bet The Responsible Way. 18+

29

New Players Only 18+ (UK only). Minimum Deposit: £20. Maximum Offer: 150% Bonus up to £150 & 100 Spins on Book of Dead. Bonus & Spins winnings must be wagered 35x before withdrawal. Spins expire after 24hours. Promo Code: BOOK100. Withdrawal terms apply. Valid until 31/12/2023. www.begambleaware.org. View Full T&Cs

30

New bettors; Use code CASINO10; Wager bonus 50x to release bonus winnings; Valid 30 days; Stake contribution and payment method exclusions apply; T&C apply; 18+

31

#AD New customers only, min deposit £20, wagering 40x, max bet £5 with bonus funds. 100% up to £99 bonus + 99 free spins on 1st deposit. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Full T&Cs apply Full T&C's here.

32

New Players Only 18+. Minimum Deposit: £10. Maximum Offer: 120 Spins & 100% Bonus up to £50 on Starburst. Spins expire after 5 days. Bonus & Spins winnings must be wagered 35x before withdrawal. Spins expire after 5 days. Promo Code: 120SPINS. Withdrawal & full T&Cs apply. Valid until 31/12/2023. www.begambleaware.org. View Full T&Cs View Full T&Cs

33

New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit. 18+. Free Spins: on Double Bubble. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. ‡ Current Jackpots are across selected games.

34

18+ new players only. Maximum £50 bonus. Minimum deposit: £20. Deposit Bonus wins are capped at £500. Max bet with active bonus: £2. Wagering requirement 100% match deposit bonus: 30 times sum of deposit + bonus. Winnings from Free Spins are credited as Real Money without wagering requirement. Some games may not be played with an active bonus. Games may contribute differently when wagering a bonus. Deposit Bonus expires after 30 days if wagering requirement has not been met. Free Spins expire after 3 days. One bonus allowed per person, address, device, IP. www.begambleaware.org

35

Terms And Condiations. 18+. New Players Only. Min Deposit: £20. Max Bonus: £150 & 50 Spins on Big Bass Bonanza. Spins Expire after 24 hours. Wagering requierements apply 35x. Promo code: BONANZA100. Vaild until 31.12.2024. BeGambleAware.org.

36

18+ New Customers only. Opt-In Required. 100 Spins awarded on God of Fire, valued at 20p per spin. Spins awarded on 1st deposit of £10+. 30x Wagering applies as do weighting requirements. Debit card deposits only. The offer is valid for 7 days from your new account being registered. Irregular gameplay may invalidate your bonus . Please gamble Responsibly. T&Cs apply. begambleaware.org

37

18+ New Players.100% bonus on first deposit up to £50 & 20 bonus spins credited immediately for Book of Dead only.Min dep £20.Max bet £5.Max cash-out £250.40x wagering.Bonus expiry 30days.Spins expiry 2days.Game restrictions.T&C Apply.

38

18+. Terms and Conditions Apply. Available only on Big Bass Bonanza game. Min. Deposit £10. Offer valid for 24 hrs. No wagering is required. See full terms here.

39

New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit.18+. Free Spins: on Double Bubble. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. Deposit & Play £10 Get 30 Free Spins* No caps on

40

New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit.18+. Free Spins: on Rainbow Riches. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply.**£10 lifetime deposit for Daily Free Game.

41

Min. 1st dep. of £20 and above with code LVIPSP. Max bonus £200 on selected match slots; 40xWR (Dep + Bonus) & MCR x5 for Bonus. 20 Free spins on CLEOPATRA slots only. FS & FS winnings are playable on CLEOPATRA.FS: 50xWR.MCR x5.18+ only. Full T&C apply.

42

18+. New players only. Min deposit £20. bonuses to a max of £100 + 50 bonus spins. Wagering bonus 35x. Wagering bonus spins 35x. The winnings must be wagered within 21 days. Max Bonus Bet is £4. BeGambleAware.org. Bonus T&C apply.

43

18+ | Please play responsibly | www.begambleaware.org | 1st deposit only | min deposit £10 | max bet with bonus £2 | max bonus £100 | X40 wagering | bonus spins valid for selected games only | X40 wagering on bonus spins winnings | expires within 24 Hours | User Agreement & Bonus T&Cs apply.

44

Welcome bonus for a new players only | Maximum bonus is 100% up to $/€/£ 123 | Min deposit is $/€/£ 10 | No max cash out | Wagering is 50x bonus | Maximum bet while playing with a bonus is $/€/£ 5 | Eligibility is restricted for a suspected abuse | Skrill and Neteller deposits excluded |

45

Welcome bonus package on first 3 deposits 1st Dep. Min £20. 50x wagering (bonus & deposit). max bonus to cash 5x. 20 Free spins. 35x wagering. Max bonus to cash £30. Claim once. See full T&Cs for 2nd & 3rd Deposit offers. Full T&C's apply.

46

Applies only to new depositing players. 18+. Minimum deposit: £10. 35x Wagering requirement applies to match up bonus. Spins credited in specific games. Spins expire after 24 hours. Wagering requirement applies to spins. Terms and Conditions apply.

47

18+. New players only. 300% bonus on first deposit up to £20 (Max £60 bonus). Free spins on Fluffy Favourites 1p coin size. 4x wagering bingo. 40x wagering slots. Max cash out £250. Bonus expiry is 30 days. Bonus spins expiry 2 days. Game restrictions apply. Further terms apply.

48

New players only, £10 min fund, £8 max win per 10 spins, max bonus conversion equal to lifetime deposits (up to £250) to real funds, 65x wagering requirements and full T&Cs apply here

49

Full T&Cs apply (https://www.pinkcasino.co.uk/promotional-terms). New player only. 7 days to claim offer and deposit a min of £10 with a further 7 days to wager 35x. Cash stakes only and wagering contributions vary. Max reward £150. 50 wager-free spins 0.10p each on Big Bass Splash awarded after wagering complete, winnings paid as cash. 3 day expiry. 18+ BeGambleAware.org

50

18+. New customers only. Spend £10, get £50 Bonus (40x wagering, selected games) + 50 Free Spins (value £0.10 each, selected games). Bonus and Free Spins valid for 7 days. Restrictions and T&Cs apply.

51

18+. New players only. 100% bonus on first deposit up to £50 & 100 bonus spins (50 spins on day 1, 25 on day 2, 25 on day 3) for Book of Dead slot only. Min first deposit of £20. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expire after 48 hours. Game restrictions apply. Full Terms Apply. Gamble responsibly.www.begambleaware.org

52

New depositing players only. Min.1st deposit £10. Min. 2nd and 3rd deposits £20. Max. bonus varies per deposit (see below). Bonuses are issued as follows: *first deposit is 50% bonus up to £50 + 20 Spins on Starburst; *second one is 50 % Bonus up to £75 + 40 on Book of Dead; *third deposit brings 50 % Bonus up to £75 + 40 on Legacy of Dead. Bonuses that require deposit, have to be wagered 35x. This offer is available to players residing in United Kingdom only.

53

18+. New customers only. Spend £5, get £10 Slots Bonus (40x Wagering, selected games) + 100 Free Spins (Value £0.10 each, selected games). Claim & use within 7 days. Restrictions and T&Cs apply.

54

18+ new players only. Maximum £50 bonus. Minimum deposit: £20. Deposit Bonus wins are capped at £500. Max bet with active bonus: £2. Wagering requirement 100% match deposit bonus: 30 times sum of deposit + bonus. Winnings from Free Spins are credited as Real Money without wagering requirement. Some games may not be played with an active bonus. Games may contribute differently when wagering a bonus. Deposit Bonus expires after 30 days if wagering requirement has not been met. Free Spins expire after 3 days. One bonus allowed per person, address, device, IP. www.begambleaware.org For full bonus terms and conditions, please read below. Responsible Gaming

55

18+ New Players.Min deposit £10.Wagering requirement apply 35x.Offer valid for 72 hours.100 spins includes 3 deposit. T&Cs Apply

56

Full T&Cs Apply. Applies only to new depositing players. 18+. Minimum deposit for 1st deposit bonus: £10. Welcome Package split over 3 deposits. Minimum deposit for 2nd & 3rd deposit bonus: £20. 35x Wagering requirement applies to match up bonus. 100 spins splits to 20 spins a day for 5 days. Spins credited in specific games. Spins expire after 24 hours. 50x Wagering requirement applies to spins.

Our Guide to Online Slots

Online slot machines are the digital version of the traditional one-armed bandits found in land based casinos. You can gamble with real money or play for free at many of the top slot sites UK. Online slots are a favourite for many gamblers as they offer a variety of special features with multiple genres to cater for every taste possible and any sized budget, big or small.  

How We Choose the Best Slot Casinos

Finding the online slot casinos to play these popular casino games can be a challenging task for slot enthusiasts especially when there are literally thousands of sites to choose from. However, keep reading to discover the strict criteria that we benchmark the best slots sites against to provide an all round safe and reliable gambling experience.

  • Safe and Secure: All slots sites must be licensed and regulated by a trusted gaming authority such as the UK Gambling Commission. We expect online casinos to utilise top spec encryption technology to protect all sensitive data during transactions.
  • Games Portfolio: The best casino sites UK will offer a variety of casino games including slots, table games, video poker and live dealer tables. We would expect to see new online slots being added to the lobby on a regular basis to keep the site current and engaging.
  • Payment Methods: We expect the top slot sites UK to offer a variety of trusted and reliable payment methods such as debit cards, e-wallets, mobile pay or prepaid vouchers to make deposits and withdrawals simple and safe.
  • Online Slots Bonuses: We like to see the best slots sites offer inviting welcome bonuses and regular promotions for both new and existing players. These should have clear and transparent terms plus fair and achievable conditions.
  • Customer Service: Top online slot casinos will typically offer 24/7 customer support that can be accessed via Live Chat, email or telephone. You will usually find the team to be friendly, responsive and knowledgeable.
  • Mobile Platform: We expect all slots sites to provide a fully optimised mobile platform to cater for gamers on the go. Some may also include a mobile app for iOS or Android devices which provides a more personalised experience. 

Progressive Jackpot Slots

Some of the most celebrated and sought-after casino slot machines are progressive jackpot slots. These online slots work just like any other game, but with one key difference: A small percentage of each payment is put aside to build a jackpot.

This jackpot steadily builds over time, growing incrementally with each spin taken by each player. The jackpot is then released to one lucky player, after which it resets and the process repeats.

Most progressive jackpots are paid at random and can be triggered during any spin. Some of them are dependent on the state level. In these cases, they will either payout when that level has been reached, or they will pay a percentage of the jackpot to every winner below that level.

Whenever you play slot machines online, you’re tied to a specific set of rules and maximum payouts. Progressive casino slot machines, on the other hand, offer limitless potential, with jackpots that climb to staggering amounts (often in excess of £100,000, sometimes over £1 million) and can be won by anyone.

Take a look at these top jackpot slot machine games available at top UK online casinos:

  1. Mega Moolah
  2. Gladiator - Road to Rome
  3. King of Olympus
  4. Age of the Gods: God of Storms
  5. Age of the Gods: Rulers of Olympus
  6. Age of the Gods: Mighty Midas
  7. Gladiator Jackpot
  8. Age of the Gods: Medusa & Monsters
  9. Furious Four
  10. Age of the Gods: Ruler of the Sky

Slot Machines

Real money slot machines have a variety of reels, paylines, symbols, and features. These all come together to make the games distinctive and to set them apart from the thousands of others out there.

Some of the most common setups are described in examples below:

  • 5 reels; 10 to 20 paylines: These online slots are very common and include some of the most popular slots ever created, including NetEnt’s Starburst. They have a fixed number of paylines and a familiar grid, often spread across 3 reels.
  • 243 Ways to Win: These slots essentially create paylines out of every consecutive symbol, thus increasing the possibility for winning combinations. They can occur on many different grid systems. Games include The Dark Knight Rises.
  • MegaWays: Created by Big Time Gaming and licensed to many other developers, the MegaWays mechanic creates a different number of paylines for each spin by randomizing the reels and rows. There can be over 100,000 paylines on some of these games, including Bonanza and MegaWays.
  • Grid Systems: Online Slots have been known to use unique grids, from one that begins with one or two rows and then expands to several, to ones that increase and decrease, creating a pyramid shape.

Online Slots Rules

For the most part, real money slot machines are not complicated. They are designed to be straightforward, ensuring they can be picked up, played, and enjoyed with little fuss or preparation.

However, whether you’re looking to play slot machines for free with a bonus or play with real money, it pays to be prepared. Take a look at these basic rules before you play online slots:

  • Bet Sizing: Whether you’re using a slot machine app or playing through your desktop, the first step is to set your stake level. This is done one of two ways:
    • Total Bet – Some slots simplify the bet sizing process by offering a single option for “Stake Size” that you can increase or decrease.
    • Coin Bet – Other online slots require you to change the “Level” and the “Coin Size”. In this case, the “Level” essentially refers to the number of coins gambled per line or spin, while the “Coin Size” defines the value of each coin.
  • Symbols: All online slots have a series of unique symbols. These symbols form winning paylines and unlock features, depending on the category they fall into:
    • Basic – These symbols range from “Basic” to “Main”, with the latter triggering the higher payouts. Typically, 3 matching symbols are needed in a single payline to trigger a win.
    • Wilds – A Wild can be used in place of all other symbols, helping to complete winning paylines.
    • Scatter – The Scatter symbol is used to trigger instant wins or unlock bonus features. In most cases, 3 or more are needed, and they can appear anywhere on the reels.
  • Additional Features: These features add an extra dimension to the slot and come in several forms:
    • Bonus Rounds – These features are essentially mini-games where the goal is to make selections and reveal winnings.
    • Free Spins – The average Free Spins feature awards a fixed number of spins, with all winnings accumulated through the feature being released at the end.
    • Random Features – These features are triggered at random throughout the regular play and are often mini versions of bonus features.
  • Game Info: You can find more information relating to a specific slot machine in the game’s Paytable. This contains information about payline numbers and locations, as well as symbols, features, and more.

Online Slots Glossary

  • Bonus Feature: An additional game that awards extra features when triggered.
  • Expanding Wild: A Wild symbol that expands into more spaces, filling entire reels and rows.
  • Fixed Jackpot: A set jackpot that does not increase and can be won randomly or via a game feature.
  • Gamble: A feature that can be triggered following a winning payline. It allows players to “gamble” their winnings, often on the turn of a card.
  • Spins: A feature, often triggered by a Scatter, that awards a fixed number of additional Spins.
  • Maximum Bet: A button that automatically sets the maximum stake/line amount.
  • Multiplier: A feature (in the form of a symbol, mechanic, or bonus feature) that multiplies winnings.
  • Nudge: An old-school slot feature that “nudges” the reels to create wins. It’s nowhere near as common on online slots, but it can still be found from time to time.
  • Progressive Jackpot: A jackpot that builds gradually with every spin across all player sessions, before being released at random.
  • Payline: A fixed line on the game-screen. A win is awarded when matching symbols appear in this line.
  • Payout: An amount of money paid to the player following a winning spin.
  • Paytable: An info-pane containing details of the slot, including payouts and paylines.
  • Reels: Vertical lines of symbols that spin randomly. Most slots have 3 to 5 of these.
  • Rolling Reels: A mechanism that can trigger a series of wins following a single spin. The winning symbols all disappear, and new symbols fall into place, sometimes accompanied by an increasing multiplier. Rolling Reels is the term used by Microgaming, but this mechanism is also used by other developers, including NetEnt (Avalanche) and Playtech (Cascading Reels).
  • Scatter: A unique symbol that awards instant wins or triggers bonus rounds when a fixed number appear anywhere on the reels.
  • Sticky Wild: A Wild that locks onto the reels and remains fixed in place for multiple spins.
  • Return to Player (RTP): An RTP is the average payout returned to a player over the course of an extended session. For instance, if a player places 100 £1 bets on a 95% RTP slot, the average expected return would be £95.
  • Themes: The slot theme is the defining aesthetic, whether it be related to a specific movie, piece of music or TV license, a classic “Fruit” or “Jewel” theme, or an original theme based on Fantasy, Sci-Fi, or something else.
  • Volatility: The volatility ranges from “low” to “high”. It describes how often the slot pays-out, with “low” being a slot that pays small amounts frequently and “high” being one that pays larger amounts more infrequently. Volatility is also known as “Variance”, although the latter is typically used to refer to card games like poker.
  • Wild: A symbol that builds winning paylines by substituting for other symbols. The Wild is often, but not always, the biggest symbol in the game and can return fixed jackpot wins when it fills an entire payline.

How to Play Online Slots

Online slots come in all forms, shapes and sizes with eye-catching graphics, innovative features, immersive gameplay, toe-tapping music plus the occasional big wins. However, the basic principles and framework of playing the game remain the same; players place their bets, press spin and hope for a win. 

Online slot machines consist of reels and rows, the number of which will depend on the game type, but to give you an idea, classics tend to have 3 reels and 3 rows (3x3) whereas video slots can have anything from 5+ reels and 3+ rows. The aim is to line up symbols across the reels on active paylines for a win.

Here’s a simple quick-step guide on how to play online slots:

  • Register with one of our highly recommended online slot casinos
  • Make a deposit, claim the bonus and select the online slot you’d like to play
  • Read through the game rules and paytable information to know the symbol values
  • Select the number of paylines to play with (some slots have fixed paylines, others will adjust)
  • Choose your bet amount (minimum to maximum scale or just hit the max bet button if desired)
  • Select autoplay (optional) – typically up to 100 automated spins but can be more
  • Press Spin/Start to spin the reels and hopefully land a win 

Gameplay Features

As you’ll notice in the guide above, certain gameplay features may be optional with online slots but this will depend on the game you select. Not every slot will have adjustable paylines, most come with a fixed number. Betting options may include choosing the bet per line to acquire the total bet amount. Not all games feature autoplay but many do, some feature up to 1,000 automated spins.

In the menu settings you may be able to set loss limits on the automated spins cycle or change your bet per line. It’s within this section that you can often find the sound options to enable the sound and/or the effects to be on or off. 

To enhance the excitement of play and help you win more, online slots typically feature special symbols in addition to the regular symbols found on the reels:

  • Wilds: sometimes award instant payouts, often substitute for all regular symbols to create further wins
  • Scatters: can award instant payouts, often pay from any position, payouts typically multiplied by the total bet, typically trigger the free spins round
  • Bonus: typically used to trigger additional bonus rounds

Understanding the Slot Machine

In the early days of online slots, games were a rather simple affair with a 3x3 layout and one active payline. It was a simple task of pressing spin and holding your breath to see where your luck would take you. Nowadays it’s a much more complex experience with some online slot machines boasting 5+ reels and in the case of the innovative Megaways slots, up to 117,649 active paylines.

However, this evolvement of online slots does bring with it additional features such as wilds, scatters, free spins, bonus rounds, progressive jackpots and more. The actual base gameplay still remains the same as our simple guide demonstrated. You just need to read the paytable and game rules a little more carefully to understand how to trigger these special features.

Understanding the Paytable Information

The paytable for real money slots outlines the value of each symbol that appears on the slot reels. It details the actions of special symbols and how to trigger bonus features. You will also find information on any bonus or free spins rounds, what to expect and what you can win. 

A typical win for online slots is achieved by matching three (sometimes two) or more symbols on adjacent reels across the active paylines. Payouts are made in accordance with the paytable, sometimes it may state symbol value x bet per line but more often than not it will be symbol value x total bet.

Game Fairness

Some players may worry about the legitimacy of online slots and whether they may have been ‘rigged’ in favour of the online casino. However, if you are registered with a reputable online slot site you can be sure that the slot games have been subject to third party auditors who monitor the RNG (Random Number Generator) and RTP (Return To Player) stats of all online casino games to ensure fair gaming compliance.

Different Types of Slots

As we discussed earlier, online slots have come a long way in the last few years with slot developers pushing for more innovation to engage players. This has brought about a flexibility in the types of online slot machines available:

  • Classic Slots: Typically a throwback to a bygone era of bars, arcades and casino floors. More often than not 3 reels, 3 rows and 1 to 5 paylines. Simple design and gameplay with little to no features. Basic sound effects and typical retro graphics such as fruits, jokers, BARs, bells and 7s.
  • Video Slots: Modern design, soundtrack and effects. Exciting gameplay with bonus symbols and feature rounds like free spins or hold and win bonuses. Available with 5+ reels, 3+ rows and multiple paylines. Thousands to choose from and multiple genres to cater for all tastes.
  • 3D Slots: Similar to video slots in game features and play, however, sharper graphics, high tech animation and design. Often accompanied by a strong narrative and back story that provides for immersive gameplay.
  • Branded Slots: Games developed in line with popular TV shows, films, books, game shows, musicians, popular music groups and more. Branded slots feature characters, video clips, voice-overs and favourite tunes or theme music to engage fans even further.
  • Standard Jackpot Slots: Providers or slots sites set a fixed jackpot amount for players to trigger bonus rounds in the hope of winning large cash prizes.
  • Progressive Jackpot Slots: These slots are often linked to several other games and/or casinos. The jackpot prize is much bigger than a standard one and increases every time a player places a bet. It’s not unusual for progressive jackpots to seed at £100,000 and pay out at £2+ million.

Software Providers for Online Slots

There are multiple software providers supplying online slots UK sites with casino games. Some of these providers stand out for their innovation and are considered industry leaders.

Here are a few of those more notable names in the business:

  • Big Time Gaming: Recognised for its innovative development of the Megaways game mechanic that expands the active paylines up to 117,649. Top slots include Bonanza, Extra Chilli Megaways, Big Bad Bison, Max Megaways and Danger High Voltage.
  • Play’n GO: Renowned for its impressive visuals and exciting bonus rounds, Play’n GO offers multiple slots in a variety of genres including Norse, Greek and Egyptian mythology, Music and Sci-Fi. Trending titles include Sweet Alchemy 100, Scroll of Seth, Reactoonz and Book of Dead.
  • Microgaming: Creator of the world famous Mega Moolah progressive jackpot slots. An expert in its field, Microgaming has provided the industry with some of the best slot titles including fab favourites Lucky Leprechaun, Immortal Romance and Thunderstruck II.
  • NetEnt: One of the leading game providers and renowned for supplying one of the most played slot titles, Starburst. Pioneers NetEnt continue to be at the forefront of innovation with its unique game mechanics, exciting graphics and immersive gameplay. Other popular releases include Gonzo’s Quest, Dead or Alive II and Divine Fortune.
  • Pragmatic Play: Developers of multi-award winning slots, Pragmatic Play continues to be a firm favourite amongst slot enthusiasts. With exciting features and innovative gameplay, top picks include Gates of Olympus, The Dog House and Sweet Bonanza.

Online Slot Bonuses

One of the greatest advantages of playing online slots is the prospect of being able to claim a casino bonus. Most welcome bonuses include a deposit match plus a bundle of free spins for selected slots. 

Here are the most popular online slots bonuses:

  • No Deposit Bonus: These bonuses are often in the form of a small package of free spins for selected slots with no requirement of a deposit.
  • Match Deposit Bonus: Often associated with the welcome bonus, the match deposit is typically a percentage match such as 100% up to £100 and very often accompanied by free spins.
  • Reload Bonus: Usually offered to regular players midweek or weekends, this bonus can be awarded in free spins or a reduced match deposit e.g. 50% up to £100.
  • VIP Program: One of the most common perks for casino VIP programs is the reward of free spins for each level of the program achieved. 

Playing Online Slots For Free

Here at Mansion Casino we recommend that where possible you test out any new online slots for free before ploughing your hard-earned money into a game you’re not one hundred percent sure about. You can do this without downloading the game through our Mansion Casino website page or one of our highly recommended slots sites.

Playing online slots for free is the best way to learn the game rules and develop a strategy for real money play. You can trigger the bonus rounds, familiarize yourself with the symbol values, check out the most common symbol payouts, vary your stake levels, all with no risk to your budget. Of course, playing for free means that you cannot withdraw any winnings.

Playing Online Slots For Real Money

Playing real money slots is ultra exciting and if you’ve managed to play the slot for free first, you’ll have a good idea of what to expect for your money. Online slots are a game of chance but if you get a good run of luck you can expect to create some big wins. 

To play for real money you’ll first need to choose from one of the reputable slots sites available and register for an account. Deposit some funds and claim the welcome bonus, then you’re ready to start wagering on your favourite online slot machines. 

It’s worth noting that when you play real money online slots as part of your welcome bonus, any winnings may be subject to wagering requirements prior to withdrawal. You should also look out for a potential win cap on free spins winnings. 

Playing Mobile Online Slots

Most casino sites UK will now offer a mobile optimised platform for gamers on the go, some will also offer a mobile app that can be downloaded for a more personalised approach.

Most slots sites can be accessed via your iOS or Android devices and platforms will adapt to the size of your screen. 

In the early days of mobile gaming, many slots sites restricted the number of online casino games that could be accessed from your mobile device. However, with the increasing popularity of mobile gaming, most sites offer the same compliment of online slots for mobile play as from the desktop version. 

Online Slots – Tips and Strategies

  • Choose a reputable online casino
  • Play for free prior to real money
  • Take your time when playing
  • Read the game rules carefully
  • Browse the paytable and its values
  • Try to play with all paylines active
  • Manage your bankroll effectively
  • Play low stakes when starting out
  • Try to trigger the free spins bonus

Online Slots Games

Age of the Gods Fate SistersFunky MonkeySkazka
A Night OutGeisha's StorySparta
Arctic TreasureGladiator JackpotStreak of Luck
Banana MonkeyGold RallyThai Paradise
Beach LifeGreatest OdysseyThe Riches of Don Quixote
Bench Warmer Football GirlsHappy BugsTrue Love
Bermuda TriangleHaunted HouseVacation Station
Bonus BearsHot GemsWhat's Cooking
Cat in VegasJurassic IslandWild Wishes
Cat QueenKong the EighthZhao Cai Jin Bao
Legacy of the Wild Land of Gold Kingdoms Rise
Cherry LoveLa Chatte RougeClassic Slots
Lucky Halloween Lotto Madness Leprechaun’s Luck
Chinese KitchenMagical StacksBaywatch
Crazy 7Miss FortuneDC Superhero
Jungle TroubleJungle Giants John Wayne
Cute & FluffyMonty Python’s SpamalotDeal Or No Deal International
Deal or No DealMulti SpinDragon Kingdom
Epic ApePanther MoonFairy Magic
Mr. Cashback Slot Monty Python’s Life of Brian Mega Moolah
Jekyll and Hyde Jackpot Giant Jackpot Bells
EsmeraldaPenguin VacationForest of Wonders
Farmer's MarketProgressive SlotsInnocence or Temptation
Halloween Fortune Great Blue Golden Ticket
Fei Cui Gong ZhuQueen of PyramidsSilent Samurai Jackpot
Fishing with BuddiesRome & GloryAlchemist’s Spell
Irish Luck Video Slot Ice Cave Hologram Wilds
Football RulesSecrets of the AmazonThe Discovery
Robocop Slot Reactoonz Slot Purple Hot Slot
Fountain of YouthSilent SamuraiThe Mummy
Full Moon FortunesSilver BulletTop Trumps World Football Stars
Wild Games SlotTinderbox Treasures The Dark Knight 
Superman The Movie SlotPharaoh's SecretsMan of Steel Slot
Plenty O’ Fortune Nostradamus Slot Murder Mystery
Justice LeagueGreen LanternGolden Tour
Gladiator SlotXuan Pu Lian Huan Slot X-Files Online Slot
Wu Long Slot Wild Gambler: Arctic Adventure Wild Gambler
Firemen Slot Wild Elements Slot Wild Beats Slot
Who Wants to Be a Millionaire White King Vacation Station Deluxe Slot
Matrix SlotSun Wukong Stars Awakening Slot
Stars Ablaze Starburst Slot Solar Se7en Slot
Sherlock Mystery Slot Safari Heat Rocky Slots
Highway Kings Heart of the FrontierHalloween Fortune 2
Golden StallionGolden Colts Gladiator Road to Rome
Giant Grizzly Gem Heat Frankie Dettori’s Magic Seven
Funky Fruits Farm Funky Fruits Fire Strike
Fiesta de la MemoriaFei Long Zai TianEverybody’s Jackpot
Fields of FortuneFairground Fortune’s Ghost TrainEaster Surprise
Dolphin ReefDesert TreasureDeco Diamonds
Da Vinci’s VaultCops N’ BanditsChests of Plenty
Ace VenturaAge of the GodsFurious 4
Age of the Gods: Goddess of WisdomAge of the Gods: King of OlympusArcher
Book of DeadCash Vandal

Online Slot Themes

There are numerous slot themes available to enthusiasts which cater for all tastes. These can be based on popular culture, hobbies, favourite movies, and more. Developers are quick to spot a new trend and will create new online slots to meet demand. You may find a particular genre has multiple slots of its kind, but this doesn’t seem to stop a themes popularity nor prevent developers from creating more. 

The top ten popular slot themes are:

  • Ancient Egypt
  • Norse Mythology
  • Movies
  • Gems
  • Animals
  • Horror
  • Pirates
  • Irish
  • Fairy Tales
  • Ancient Greece

FAQs

How do online slots work?

Online slots are the simplest of online casino games and depend mostly on luck not skill. Simply place your bets and press spin. Land two or more matching symbols on adjacent reels for a win.

Can I play slots for free?

Yes. You can play online slots for free through our website, provider platforms or reputable online slot casinos. This is the best way to test out a new slot and develop a gameplay strategy for real money play. 

What should I look for in an online slot casino?

Always make sure the site is licensed by a trusted gaming authority like the UKGC and offers a secure platform for deposits and withdrawals. You should also look out for quality games and fun bonuses.

What is a progressive jackpot?

A progressive jackpot slot prize is bigger than standard fixed jackpots and is often linked with other games and/or online slot casinos. The jackpot prize pot increases every time a player places a bet.

Are online slots rigged?

Not if you play at reputable slot sites UK where online slots are subject to third party auditors that monitor the RTP rates and RNG software stats to ensure fair gaming compliance.

Online Slots UK Summary

We recommend casinos with some of the largest and most varied slots online games on the internet and when you sign up and deposit all of these games will be at your mercy.

Make sure you claim your online slots bonus if you’re signing up for the first time. If you have any issues, there are extensive help files and FAQs to guide you through and you can also contact your site’s dedicated customer support team via Live Chat (available to all members in the account section), phone, or email.