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Best Slot Bonus Sites - October 2021

Slot Offers (or a Slots Bonus) are the most common welcome packages offered by online slot sites and casinos for new players. Here, we list list the best slot bonuses including sites with a deposit 10 get bonus!

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Also known as ‘Welcome Bonuses,’ they usually comprise a percentage match of the initial deposit made by a new player.

This often amounts to at least 100%, although many operators push the envelope by offering up to 200%. Extras such as bonus spins are often included in the best casino deposit bonuses as well.

However, such incentives have become so widespread in the gambling industry that it can be difficult to identify the ones which offer the best ‘value’.

To help you in this task, WDW Bingo has compiled a list of the most competitive welcome deposits currently available.

We’ve also included advice about some of the things to keep in mind when searching for the best casino welcome bonuses, such as wagering, cash-out rules and time-limits. Scroll down to find out more.

  • Grosvenor Casino is the online slots site version of one of the UK's most famous casino chains. This classy but modern online casino has a big welcome bonus which even comes with no wagering free spins.

    *Claim Once Only, Min Cash Buy-in £20, Max Bonus £250 Plus 20 Free Spins, Valid 7 Days, Cash Buy-in & Winnings Playable On Classic Slots, 20xwr (Cash Buy-in & The Buy-in Bonus), Max £2 Stake, Free Spins Bonus And Winning Playable On Starbust Only, Free Spins Carry No Wagering. Keep It Fun – Set Your Deposit Limit. T&Cs Apply. *18+ BeGambleAware.org Please play responsibly #ad

  • Mecca Games is a brilliant slots and games site with a big Megaways slot bonus. The site is a perfect marriage between the Mecca Bingo brand and slot sites like Aspers Casino.

    *New customers only. Min deposit £10. 25x wagering reqs. 10x max convertible. 20 free spins on Gonzo’s Quest Megaways only. 5x wagering on free spins. 10x max convertible. Valid for 7 days. T&Cs apply. *18+ BeGambleAware.org Please play responsibly #ad

  • The Vic is the online home of the Grosvenor Victoria Casino located in central London. This brilliant new slot site runs on the same engine as Aspers Casino and has a large welcome package over 3 deposits.

    *New players only, must select in cashier, claim once only, min dep £20, valid 7 days, bonuses & wins playable on selected slots only, 40xWR (deposit+bonus), 5x max convertible, spins & wins usable on Red Tiger games only, 30xWR, £20 max convertible. *18+ BeGambleAware.org Please play responsibly #ad

  • Eagle Spins is another American frontier themed Jumpman Gaming slots site, hot on the heels of Wild West Wins. This site, however, has a bonus wheel welcome offer, where you could win a 1000% matchup bonus up to £1000.

    *New Players Only, £10 Min Fund, £1,000 Max Bonus, Max Bonus Conversion Equal To Lifetime Deposits (Up To £250), 65x Wagering Requirements And Full T&Cs Apply Here *18+ BeGambleAware.org Please play responsibly #ad

  • “Kaiser” is German for “emperor”- hence the little crown in Kaiser Slots’ logo. This online slots and casino site was launched in May 2017, and you can catch glimpses of the site’s mascot, a dog named Kaiser, around the site (though he’s not as visible as he used to be, due to regulations on child-friendly cartoon characters).

    *New Players Only 18+. Minimum Deposit: £10. Maximum Offer: 250% Bonus up to £35 & 20 Spins on Starburst. Bonus & Spins winnings must be wagered 35x before withdrawal. Spins expire after 24hrs. Promo Code: 250. Withdrawal & full T&Cs apply. Valid until 31/12/2021. *18+ BeGambleAware.org Please play responsibly #ad

  • It was only a matter of time before one of the UK’s most luxurious bricks and mortar casinos would explode its online presence. Aspers Casino is best known for its mega casino at Stratford Westfield, with its incredible tables and slots as well as bars and restaurants. It even has a roof terrace that overlooks the Olympic Stadium.

    *AVAILABLE ON FIRST DEPOSIT ONLY. BONUS: MIN. DEPOSIT £20. DEPOSIT AND BONUS AMOUNT SUBJECT TO 50x WAGERING REQUIREMENTS (GAME WEIGHTINGS APPLY). WINNINGS CAPPED AT 5x BONUS AMOUNT. FREE SPINS: 10 BATCHES OF 10 FREE SPINS DAILY. WINNINGS CAPED AT £10 PER BATCH. FULL T&Cs APPLY *18+ BeGambleAware.org Please play responsibly #ad

  • Winners' Club is a new Nektan gaming site from the promoters that brought you Betfred Casino. This sleek and modern looking slots site has two things we love; Megaways slots and live dealer casino rooms!

    *Over 18s only. New customers only. First three deposits only. Min Deposit £10. max total bonus £500 and 150 spins. 30x bonus wagering (deposit + bonus), 30x spins wagering, 4x conversion. Selected slots only. T&Cs apply. *18+ BeGambleAware.org Please play responsibly #ad

  • Bet Storm is a quirky new Casino and Sports betting platform on the Progress Play platform with an eye-tingling neon green design. Something new for our players, but we'll think you'll like it!

    *New players only. Opt-in Required. 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. Excluded Skrill deposits. Withdrawal requests voids all active pending bonuses. Full Terms Apply *18+ BeGambleAware.org Please play responsibly #ad

  • Royal Valley Casino is operated by Grace Media and features an expansive range of online slots from top providers as well as a live dealer suite.

    *First 3 deposit only. Min deposit £10. Max total bonus £500 & 150 spins. 30x wagering(dep+bonus). 30x on spins, 4x conversion, bonus and spins valid on selected slots. Full T&Cs apply. *18+ BeGambleAware.org Please play responsibly #ad

  • Peachy Games is a brand-new Dazzletag slots site. There is endless fun to be had perusing hundreds of fun slots as well as a good table game and live dealer offering.

    *18+. New players only. 100% bonus on first deposit up to £50 & 20 Bonus Spins. Bonus spins are credited immediately and are valid 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 expiry 2 days. Game restrictions apply. Full terms apply *18+ BeGambleAware.org Please play responsibly #ad T&C's Apply

  • Genting Casino is a casino gaming site featuring an extensive array of online slots and an award-winning live dealer platform.

    *First deposit only. Min. deposit: £10, Max. Bonus £50. WR of 30x Deposit + Bonus amount (Slots count 100%, other games 10%) within 30 days. Max bet is 10% (min £0.10) of the Bonus amount or £5 (lowest amount applies). Bonus must be claimed before using deposited funds. First deposit bonus can only be claimed once every 72 hr across all casinos. Bonus Policy applies.. *18+ BeGambleAware.org Please play responsibly #ad

  • SKOL Casino is a new casino from the creators of Slotnite. Originally launched in the Scandinavian markets, SKOL stands out especially for its enormous welcome bonus over your first few deposits.

    *New Players only. One bonus offer per player. Min deposit £10. Max bonus bet £5. Bonus funds must be used within 30 days & bonus spins within 10 days. Spins valid on Starburst only. Offer consists of: 1st dep: 100% up to £300 & 100 spins, 2nd dep: 75% up to £300 & 75 spins, 3rd dep: 50% up to £300 & 50 spins, 4th dep: 25% up to £300 & 25 spins, 5th dep: 100% up to £100. The 100 spins triggered on your 1st dep are credited at a rate of 25 spins per day over 4 days. Bonus spins winnings credited as bonus funds & capped at £50. For the 1st dep offer, this winning cap shall be applied to each set of 25 spins. Bonus funds separate to Cash funds and subject to 35x wagering. Terms apply *18+ BeGambleAware.org Please play responsibly #ad

  • Spin Rio is a Brazilian themed Aspire slots site launched in 2021 by the creators of Queen Play and Mr Play Casinos. Get a great match bonus and spins combination!

    *Terms and Conditions Apply. New Players only. 18+. Min First Deposit £10. Min Second and Third deposit: 20. Wagering requirement apply 35x. Offer valid for 72hr. Spins expire after 24hr. 100 spins includes 3 deposits. *18+ BeGambleAware.org Please play responsibly #ad T&C's Apply

  • Queen Play Casino is a new Aspire casino from the developers of Mr Play. Check out the generous welcome offer in 3 parts and over 500 available slots.

    *Terms and Conditions apply. New players only. 18+. Min deposit £10. Wagering requirement apply 35x. Offer valid for 72hr. 100 spins includes 3 deposit. *18+ BeGambleAware.org Please play responsibly #ad

  • Have a delicious slots smoothie because it’s time to celebrate. During the Summer of 2018, Fruity Casa underwent a huge renovation and re-launch. The result? A new Fruity Casa which is a modernist masterpiece.

    *18+. New players only. Minimum deposit of £10. Bonus spins are valid on Fruit Shop only and subject to 35x wagering, and must be used within 10 days, otherwise any unused bonus spins shall be removed. Bonus funds are 100% up to £100 and separate to Cash funds. 35x bonus wagering requirements and only bonus funds count towards wagering contribution. £5 max bet with bonus. Bonus must be used within 30 days otherwise any unused bonus shall be removed. Terms Apply. BeGambleAware.org *18+ BeGambleAware.org Please play responsibly #ad

  • Plaza Royal Casino is a unique Aspire platform site released in November 2020. From the makers of Queenplay and Spin Rio, Plaza Royal is a Vegas Hotel themed site with lots of slots and a good bonus.

    *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. *18+ BeGambleAware.org Please play responsibly #ad

  • If you imagine domain names are real estate, then surely casino.com is the biggest mansion in Beverly Hills, which is so expensive it’s a timeshare between Jeff Bezos, Bill Gates and Queen Elizabeth II. It’s perhaps no coincidence either that casino.com is owned and operated by the Mansion Casino Group.

    *New Customers. Min Deposit £20. 40 Free Spins On First Deposit. 160 Free Spins After First Deposit (20 Per Day). Max Win £100. 20x Wagering. Deposit Bonus 40x Wagering. Expires 30 Days From Issue. Eligibility, Game, Platform, Payment Restrictions And T&Cs Apply. *18+ BeGambleAware.org Please play responsibly #ad

  • Regal Wins is an online slots and casino site that was launched in April 2017 and is owned by Daub Alderney. With a black and gold theme and a range of promotions and games to choose from, will you feel regal playing at this online slots site?

    *1st dep. of £20-£500, max bonus £500 on selected slots; 50x wagering on the sum of deposit & bonus applies. Max convertible 5x bonus amount received. 18+. T&Cs Apply 18+ *18+ BeGambleAware.org Please play responsibly #ad

  • Jaak Casino is a brand-new slots and games site from our friends at Aspire Global and Tau. Newly opened to UK customers, this is a Nordic casino that has sailed to our shores like the Vikings. Jaak is the Estonian version of name Jack, in case you were wondering.

    *New Players Only 18+. Minimum deposit: £10 . Maximum Offer: 200% Bonus up to £30 & 30 Spins [Starburst] . Bonus & Spins winnings must be wagered 35x before withdrawal. Spins expire after 24 hrs. Promo Code: NEW30 . Withdrawal & full T&Cs apply. Valid until 31/12/2021. *18+ BeGambleAware.org Please play responsibly #ad

  • Casushi is an eccentric new slots site from the same people that brought you Peachy Games.

    *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 Rich Wilde and the 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 expiry 2 days. Game restrictions apply Further Terms Apply. *18+ BeGambleAware.org Please play responsibly #ad T&C's Apply

Best Slot Bonus Offers UK

So what constitutes the best slot bonus? Well, this is a subjective question – some players look for percentage matches while others prefer the additional perks such as bonus spins. Whichever your preference, there are a few things to keep in mind when searching for competitive welcome bonuses.

What is a good Casino Deposit Bonus?

As a general rule of thumb, look for welcome bonuses that offer at least a 100% match of up to £200. Anything lower should probably be avoided unless the promotions include additional incentives that are unusually generous, such as extra spins or no wagering slots.

Usually, you’ll need to deposit £10 to get bonus slots. You will also find some more generous slot offers than 100% match. For example, at some sites you’ll see deals like deposit £10, get £30 slots or even more!

What other types of casino bonus exist?

Extra Spins

Most online casinos offer from 50 to 120 extra spins as part of their casino deposit bonuses. There are exceptions of course, with some welcome promotions comprising up to 200. However, such offers are somewhat thin on the ground so try to identify bonuses that include a minimum of 50 spins.

What about wagering requirements on a slots bonus?

Behind every welcome offer lurks the bête noire of every casino-gamer: wagering requirements. Like it or not wagering, or play-through rules as they’re sometimes known in gambling parlance, are a fact of life. They generally require players to wager a multiple of their deposit (as well as the bonus itself in some cases), before any winnings can be withdrawn.

For certain players, wagering doesn’t present much of a problem. However, they should be treated like a wounded tiger – with respect and caution.

In the early days, operators would hide these harsh stipulations in their T&Cs pages. But recent, regulatory changes now require them to be included in all promotional advertising. Take a look at any casino welcome offer and you’ll see wagering rules written in small print beneath the shrieking promo headlines.

It’s quite difficult to recommend an acceptable wagering rate. Other than zero, we’d suggest something in the region of 30 – 40. However, you might want to stretch higher, depending on the generosity of the related bonus. For more information, see our no wagering slots page.

Time-Limits

Because of wagering rules, you’ll also need to pay close attention to promotional time-limits. After all, playing through a bonus and/or deposit some forty-or-so times won’t happen overnight.

So to protect any winnings you might accrue, be mindful of how long you’ve got to satisfy this requirement. The terms of many promos and offers can be satisfied within 30 days but be aware: some operators still impose draconian time-limits which make it extremely difficult to meet wagering rules in time.

Game Weighting on the Best Slot Bonuses

Game weighting should also be considered when choosing the best casino deposit bonus, with online casino games contributing different percentages towards the completion of wagering requirements.

While many standard slots contribute 100% to play-through rules, there are some, particularly those with high RTPs, which offer less. Additionally, table games are usually assigned low weighting percentages because their house edge is that much lower than other games.

To conclude then, it’s always a good idea to read the terms and conditions thoroughly before committing to any casino or slots deposit bonus. Although some welcome packages aren’t quite what they seem, there are plenty of offers, such as the ones included above, which offer genuine value for money. Just be sure that you’re fully clued-up about each restriction in place.

Slot Bonus & Offer Categories

For the rest of our slots bonus and offer type pages, see our list below to find the right brand for you.

No Wagering Slots - October 2021

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We list all the best slots sites with no wagering bonuses. We have exclusive, no deposit & free spins offers with real money wins, but you may need to play through your deposit first. Check our top no wagering slots...

No Deposit Slot Sites - October 2021

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These are the best new slot sites in 2021 with free spins no deposit offers in 2021 as well as established sites with great deals. Get free spins just for adding a card in the...

Best Slots Sites with Free Spins Offers

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Looking for slot sites that have free spins or bonus spins offers as part or whole of their welcome bonus? Then you are in exactly the right place. Here we list the best and newest slot sites with brilliant spin...

Exclusive Slots Offers

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Welcome to our Exclusive Slot Offers page. Here, you’ll find all the slot sites that we’ve struck special deals with to give you a unique (and totally better) deal than you would get if you went straight to the site...

Best Slot Bonus FAQs

Yes, very often a slots site will stipulate which slots and games are eligible in the bonus. Be careful to read the terms and conditions! Some bonuses may only be eligible on one slot game. Some may be eligible across a certain platform of slots. Some bonuses will accept a great majority of slots bonus across the site, but this is incredibly rare.

Sometimes, but this is becoming increasingly rare. Check the terms and conditions, but most casino bonuses will ask you to play through your bonus first.

Yes – this is pretty much always the case. The generosity of this figure varies massively from £2-£3 all the way up to hundreds of pounds. Often, it depends on the type of bonus. Free Spins winnings often have a lower cap. This information will always be included in the terms and conditions.

Yes, frequently. Check the T&Cs to see what the maximum bet you can make with your bonus is each time.

Usually, a site will have a separate live dealer casino welcome bonus. The new player may even be offered a choice between different types of welcome bonus. However, it is rare for a standard casino welcome offer to be playable on live dealer casino games. Sometimes they may be eligible, but the game weighting towards the wagering requirement may be miniscule.

Recommended Offers

Double Bubble Bingo Double Bubble Bingo Review

Deposit & Play £10, Get £50 of Free Bingo OR 50 Free Spins

Play at Double Bubble Bingo

*New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit. Free Spins: on Double Bubble. Spins value: 20p each. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. 18+. **£10 lifetime deposit required. *18+ BeGambleAware.org Please play responsibly #ad

Heart Bingo Heart Bingo Review

Spend £10, Get 500 Bingo Tickets + 25 No Wager Spins

Play at Heart Bingo

*18+ New customers. Deposit and spend £10 on Bingo tickets within 30 days of registering. Get 500 Bingo tickets for Heart Bonanza, 7 days expiry + 25 Free Spins on Heart Bonanza Slot Game, 7 days expiry. Click for T&Cs. | begambleaware.org | Please gamble responsibly *18+ BeGambleAware.org Please play responsibly #ad

bet365 Games bet365 Games Review

Three Days of Free Spins – Get up to 60 Free Spins when you sign up and deposit a minimum of £10

Play at bet365 Games

*Min £10 in lifetime deposits required. Offer must be claimed within 30 days of registering a bet365 account. Reveal prizes of 5, 10 or 20 Free Spins; three spins on Free Spins reels available within seven days, 24 hours between each spin. Max. prize, game restrictions, time limits and T&Cs apply. *18+ BeGambleAware.org Please play responsibly #ad

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*18+ New customers. Deposit and spend £10 on Bingo tickets within 30 days of registering. Get 500 Bingo tickets for Heart Bonanza, 7 days expiry + 25 Free Spins on Heart Bonanza Slot Game, 7 days expiry. Click for T&Cs. | begambleaware.org | Please gamble responsibly *18+ BeGambleAware.org Please play responsibly #ad

*New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit. Free Spins: on Double Bubble. Spins value: 20p each. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. 18+. **£10 lifetime deposit required. *18+ BeGambleAware.org Please play responsibly #ad

*Min £10 in lifetime deposits required. Offer must be claimed within 30 days of registering a bet365 account. Reveal prizes of 5, 10 or 20 Free Spins; three spins on Free Spins reels available within seven days, 24 hours between each spin. Max. prize, game restrictions, time limits and T&Cs apply. *18+ BeGambleAware.org Please play responsibly #ad

*New players only, must select in cashier, claim once only, min dep £20, valid 7 days, bonuses & wins playable on selected slots only, 40xWR (deposit+bonus), 5x max convertible, spins & wins usable on Red Tiger games only, 30xWR, £20 max convertible. *18+ BeGambleAware.org Please play responsibly #ad

*New Players Only 18+. Minimum Deposit: £10. Maximum Offer: 250% Bonus up to £35 & 20 Spins on Starburst. Bonus & Spins winnings must be wagered 35x before withdrawal. Spins expire after 24hrs. Promo Code: 250. Withdrawal & full T&Cs apply. Valid until 31/12/2021. *18+ BeGambleAware.org Please play responsibly #ad

*New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit. 18+. Free Spins: on Secrets of the Phoenix Megaways. Spins value: 20p each. *18+ BeGambleAware.org Please play responsibly #ad

*New customers only. Min deposit £10. 25x wagering reqs. 10x max convertible. 20 free spins on Gonzo’s Quest Megaways only. 5x wagering on free spins. 10x max convertible. Valid for 7 days. T&Cs apply. *18+ BeGambleAware.org Please play responsibly #ad