Is Big Thunder Slots Legit or a Scam? – Review | Sister Sites

Big Thunder Slots review- Want an awesome show from nature? Sit back for the audio-visual spectacle of a thunderstorm. Thunderstorms produce the amazing flashes across the sky we call lightning, and the rapid expansion of air around a lightning strike produces the cracking and rumbling we call thunder.

Drawing from the awesome spectacle, Big Thunder Slots can only be promising to be a gaming destination that you should go to for an awesome time.

The question is whether this is just some clever theming or whether Big Thunder Slot really has gaming provisions to deliver an awesome online casino gaming experience. That is, does Big Thunder Slots have a wide variety of first-rate and entertaining online casino games? Does it have a range of rewarding casino bonuses and promotions? Does it offer top casino services (like effective customer service, painless and fast depositing and withdrawing, etc)? In the first place, is Big Thunder Slots a legit and safe online casino?

This review will examine Big Thunder Slots in order to provide the information that will help you answer these questions.

About Big Thunder Slots

 Hits Misses
Has a very simple and easily-navigable website ( new, as its been around for only 2 years
Operated by the 100% legal and reliable Jumpman GamingXA long list of restricted countries, which includes the United States
Licensed by reputable gambling commissions (UKGC and AGCC)  
Keeps players’ sensitive data safe using SSL technology  


Big Thunder Slots is an online casino from Jumpman Gaming Limited. It was launched in 2018, making it a relatively new online casino. Given that Jumpman Gaming is a robust operator with many gaming sites under its umbrella, Big Thunder Slots has a lot of sister sites.

These include slot-focused sites (like Fever Slots, Cop Slots, Fairground Slots, Cheeky Casino, etc) and bingo-focused sites. If you’ve seen any of these sites (especially the slot focused ones) then you’ve seen Big Thunder Slots, as these sites are virtually identical. is themed after the awesome audio-visual spectacle of a thunderstorm to tell you that it is an awesome website. Thankfully, the website sets the tone for an awesome experience, as its simple design is very welcoming.

Is Big Thunder Slots legit?

Yes, Big Thunder Slots is every bit legit. To see that Big Thunder Slots is not a gaming site that’ll scam you, simply read the following, which is a consideration of its operator profile, licensing profile, and operating record.

  • Operator Profile – Big Thunder Slots is operated by Jumpman Gaming Limited. What about this operator makes Big Thunder Slots legit? As you may have seen in some of our other reviews, Jumpman Gaming is a 100% legal and reliable operator. 100% legal? Yes, it is a fully registered company with a registered business address. Reliable? Yes, it has numerous other sites, and are passed as “legit” industry-wide. Suffice it to say that, with Big Thunder Slots, coming from an operator of this profile, it is very legit.
  • Licensing Profile – Big Thunder Slots is licensed and regulated by the UK Gambling Commission (UKGC) and the Alderney Gambling Control Commission (UKGC). What about this licensing makes Big Thunder Slots legit? First, it is not an unregulated casino that operates as it deems fit. Rather, it is regulated by arguably the most reputable gambling commissions out there. That is, before being permitted to operate, it underwent a rigorous approval process, where it satisfied the commissions that it is fair, financially solid, etc. Thus, every player in Big Thunder Slots has an equal chance of winning any game round; and winners can be sure of getting paid when they request payment. Know that, it does nor ends with getting licensed. The commissions strictly check on their license holders to ensure compliance with high standards. Suffice it to say that, with Big Thunder Slots, licensed and under the oversight of these reputable these gambling commissions, it is very legit.
  • Operating Record – Established in 2018, Big Thunder has been operating for 2 years. What about this makes Big Thunder Slots legit? Yes, a 2-years record is not long enough when checking whether an online casino has passed the test of time. However, a scam online casino would have been discovered in no time. It won’t take up to 2 years of playing to uncover that games are rigged and cannot produce winners, or to uncover that a site does not pay winners. However, the 2 years’ operating record of Big Thunder Slots has revealed that it produces winners and that it pays winners. If you search, you’ll find winners of Big Thunder Slots both in its homepage and independent sites. However, you won’t find winners of Big Thunder Slots complaining of not being payments. Suffice it to say that there are always tons of non-payments complaints against scam gaming. With Big Thunder Slots consistently producing winners and paying, it is very legit.

Is Big Thunder Slots safe?

Yes, Big Thunder Slots is every bit safe. The sensitive information that you give out when using this online casino is well protected. You’ll see this knowing the security measure it utilizes and the strength of the measure is.

Big Thunder Slots utilizes SSL (Secure Sockets Layer) technology. In terms of how strong it is; suffice it to say that it is a bank-grade technology (used by top banks to keep their data safe). Thus, whether when transmitting it or when stored in their systems, your personal information, transaction data or any other sensitive data you enter into Big Thunder Slots cannot be captured and read by third parties.

Restricted Countries

Not everyone can enjoy the awesome experience that Big Thunder Slots promises. This is because it does not allow registration from players everywhere. Unfortunately, the list of restricted countries is relatively long and includes the United States.

The only countries that Big Thunder Slots allow registration from are: Anguilla, Antarctica, Aruba, Austria, Benin, Bermuda, Bhutan, Bolivia, British Indian Ocean Territory, Burkina Faso, Cameroun, Canada, Cayman Island, Chad, Christmas Islands, Cocos Island, Comoros, Cooks Island, Equatorial Guinea, Falkland Islands, Faroe Islands, Finland, Gabon, Gambia, Germany, Greenland, Grenada, Guyana, Honduras, Ireland, Kiribati, Lesotho, Macau, Madagascar, Marshall Islands, Micronesia, Montserrat, New Caledonia, Norfolk Islands, Palau, Peru, Pitcairn Islands, Poland, Samoa, Solomon Island, Svalbard, Togo, Tokelau, Tonga, Turks and Caicos Island, Tuvalu, Uruguay, United Kingdoms, and Wallis and Futuna.


Big Thunder Slots Sister Sites

There are also popular slots sites like Big Thunder Slots online. They are regarded as Big Thunder Slots sister sites because they have similar features, games and bonuses.

Below are the Big Thunder Slots sister sites:

Game Offering

 Hits Misses
Provides high-quality games supplied by leading developers (NetEnt, Microgaming, NextGen, Elk Studios, Playson, Pragmatic Play, Genii, NYX Interactive, Eyecon, etc)XThe options of non-slot games are few; only 8 blackjack, 2 baccarat, 9 roulettes, and 4 live casino games are provided
An Instant Play casino that allows players to instantly access games using web browser  
Mobile Gaming is provided  
A large online casino with 850+ games  
Has a great assortment of slot games (820+)  
Has a few table games, live casino games, and bingos  
Has many jackpot slots and a few bingo jackpots  

Software Providers

Big Thunder Slots is powered by many industry-leading game studios who grab the latest in technology to put out the best games. These include Microgaming, NetEnt, NextGen, Elk Studios, Eyecon, and more.

This means that when you grab games in Big Thunder Slots, you’ll find the top quality (great graphics and sound effects, great game-play features, and more) you need for an awesome time.

Gaming Flexibility

Big Thunder Slots is available in the Instant Play mode. This means you are not required to download and install casino software for you to access and play games in this online casino. Reaching the casino’s lobby using a web browser, you can instantly load games and play.

This Instant-Play mode means gaming is more flexible. To play casino games, you are not limited to using a particular device because it is where the casino software is installed. Rather, you have the freedom of picking up any device, navigating to the lobby and instantly playing games.

Big Thunder Slots is compatible with mobile devices and tablets. So, you can enjoy the awesome experience when on the go.

Game Selection

Big Thunder Slots holds over 850 games in its lobby. Thus, it is a relatively large online casino. However, while it is strong in terms of overall numbers, it is not strong in terms of numbers in the different game categories.


Big Thunder Slots, like many other sites of Jumpman Gaming, is a slot-focused online casino. This is clear from its name. Thus, the bulk of its games (820+ of the 850+) is slots. This many of the reels ensure that you’ll find your heart’s delight.

Available are the classic slots with their simple symbols, the video slots with a truckload of exciting features, and more. Also, you’ll find reels matching your taste whatever your preference because they come in different themes, from ancient to futuristic, from romance to horrors, from adventures to sports, and more.

Some of the hottest slots in the house are: Dead or Alive, Immortal Romance, Great Rhino, Rainbow Riches, Jumanji, Lost Vegas, Ted, and more. However, what we didn’t like is the lack of filters for finding slots. There are “newest” and “hottest” sections where you’ll find the latest additions to the library and the most played titles respectively.

There’s also a search button and an A – Z listing of games. While these will help in finding games; we seriously miss being able to search games using filters like: a number of reels, provider, themes, features, and more.

Some of the best slot attractions are jackpots. Thankfully, Big Thunder Slots has the jackpots slots, especially the progressive jackpots where the amount to be won grow all the time until the jackpot is won. Some of the top jackpot games in the house are: Rainbow Riches: Pots of Gold, Fluffy Favourites Fairground, Enchanted Prince, Piggy Payout, Shaman’s Dreams, Irish Luck, etc.

Table Games

Big Thunder Slots know the role table games play in the casino circles. So, despite its slot-focus, it still has a table games section, with a few of the table variants – blackjack, baccarats, roulettes, and live casino games.

However, the category is very small. As of writing, only 23 titles were featured as follows:

  • Roulettes: 9 tables, including European Roulette, American Roulette, and more
  • Blackjack: 8 tables, including Classic Blackjack, Atlantic City Blackjack, Vegas Downtown Blackjack, etc
  • Baccarat: 2 tables
  • Live Casino Games: 4 tables (2 Live Blackjacks, and 2 Live Roulettes)

Enthusiasts of the table games will be pleased with this. The table games provided are limited in terms of options; and a host of others are not provided (such as table pokers, video pokers, craps, etc).


If you’re not up for slots and the table games, then there are the lottery-style bingos. Big Thunder Slots has a few rooms where you’ll find exciting bingo games (90-ball bingo, 80-ball bingo, and 75-ball bingo). Bingo fund is always available and affordable, as rooms open every few minutes and cards cost just a few pence. However, we did not see rooms for free bingos.

Know that jackpot chaser will find joy in some of the bingo rooms. There’s the “jackpot room” (total prize = £27,284); there’re 3 Bingo Million Instant rooms (total prize = £1 million each); and there’s the Bingo Million room (total prize = £1.5 million).


 Hits Misses
The new players welcome is a free spin of the Mega Reel for a chance to win up to 500 Free SpinsXThe benefits of the Loyalty Program are few
Has other great offers including: Monthly Giveaway, Collect Trophies, 200 Club, Happy Hours, Turbo Reel, Chicken Dinner Winner, Daily Cashback, Cashback Boost, and Loyalty SchemeXBonus wagering requirement is “65x bonus amount” which is relatively high
  XMaximum pay-out after meeting wagering requirement is low (lifetime deposits up to £250)


Big Thunder Slots has the rewarding bonuses you’ll expect of an ideal online casino. It has the regular welcome bonus for new players and a host of other offers.

Big Thunder Slots Welcome Bonus

Welcome Bonus

New players are rewarded with a spin of the Mega Reel for a chance to win one of many great prizes. The prizes include Amazon Vouchers, 500 free spins on Starburst, and more. The welcome bonus is much more than a reward, as it incorporates every excitement of the “wheel of fortune” game.

Other Bonuses

Big Thunder Slots Promotions

If you’re not new in Big Thunder Slots, it doesn’t mean there’re no casino promotions for you to enjoy.  The offers you’ll find include:

  • Monthly Giveaway – Big Thunder Slots holds is known for its monthly lucky prize draw. In the month of writing, the prize was a 1oz solid bar of gold worth £1,435. Getting tickets to the draw is easy – simply deposit and play. Every £10 wagered on the Gonzo’s Quest Megaways slot (in the promotion period) earns you a ticket.
  • Collect Trophies – Open the “trophies” page; find fun tasks to complete and collect trophies; and for this, be rewarded with free spins. Every 5 trophies collected also unlocks the Mega Reel for a chance to win 500 Free Spins.
  • 200 Club – Collect up to 200 trophies; and in addition to all the Free Spins earned as a reward, Big Thunder Slots will also give you a free £10 amazon Voucher.
  • Happy Hours – You can just log in and receive free spins. If you’ve funded in the week, log in between 3 pm to 7 pm every Wednesday for a chance to win 10+ free spins.
  • Turbo Reel Promo – Big Thunder Slots rewards you for making big commitments. For depositing £100 or more, you’ll get a free spin of the Turbo Reel, with the prizes boosted (ranging from 50 to 500 free spins).
  • Chicken Winner Dinner – Big Thunder Slots rewards you for winning big. Every month, every player with the biggest single spin win gets a £50 Just Eat Voucher. That’s a chance to enjoy your win with a tasty meal.
  • Daily Cashback – Big Thunder Slots will give you a nice percentage of what you lost in the previous day. So, you have the chance to try again. The real cashback you get depends on your VIP status (Newbie: 0%, Expert: 1%, Pro: 3%, VIP: 5%, Legend: 10%).
  • Double Cashback Promo – In the first 31 days of using Big Thunder Slots, you can enjoy a cashback boost. Newbies members get 1% cashback, while other members get double the regular cashback.

Loyalty Program

Like the very serious online casinos, Big Thunder Slots has a loyalty program created to reward you for every deposit you make in the house. Every £1 deposited earns you 1 kudos. The more kudos you get, the higher you’ll be placed in the 5-tier loyalty program; and the higher up you are, the more benefits you enjoy.

Requirement to attain a status level100+1,000+2,500+5,000+
Monthly wager requirement to maintain status level£100+£1,000+£5,000+£20,000+
Daily Cashback1%3%5%10%
Free Spins5+10+15+20+
Birthday BonusYesYesYesYesYes

It will seem that it is relatively easy to climb to the pinnacle of the loyalty program of Big Thunder Slots (you’ll need deposits of just over £5,000). However, remaining in a level looks the trouble, because of the monthly wager amount required.

For example, you’ll need monthly wagers of £20,000+ to remain at the pinnacle of the program. Worse still, the program does not seem to offer much to justify wagering so much to keep a status level. There’s nothing other than daily cashback, free spins, and birthday bonus (which comes once in a year).

Bonus Conditions

Bonus offers come with conditions; and such conditions can sometimes be very limiting. So, it’s important to consider some of these conditions.

Bonus Wagering Requirement

In Big Thunder Slots, bonus money is subject to a 65x wagering requirement. Since the casino does not do match bonuses, bonus money is any amount won from using the free spins.

Thus, should you claim 100 Free Spins; and from your free plays, should you win £50; this will be credited as bonus money which must be rolled over 65 times. That is, before you can request any withdrawal, you must wager a minimum of £3,250 (which is calculated: 65 x £50).

Having to wager £3,250 to clear a £50 bonus is clear evidence that the wagering requirement is not friendly. In fact, it is way higher than the industry average wagering requirement, which is about 40x bonus amount. That said; while Big Thunder Slots has some fine bonuses, know that if you claim these, it’ll be relatively difficult to clear them so that you can make withdrawals.

Maximum Bonus Amount Converted to Cash

Even after completing wagering requirement, you may be unable to withdraw everything in the account. This is because there is a limit to how much is converted to cash and made withdrawable as a result of completing wagering requirement. The limit is your lifetime deposits in the casino up to a maximum of £250.

This means that after meeting the casino’s high WR, even if you have a 6-figure amount, you can only withdraw an amount equals to what you’ve deposited in the casino or £250 (whichever is lower). This cap ensures that when playing with bonuses, there cannot be big pay-outs.


 Hits Misses
Depositing and withdrawing are powered by convenient banking optionsXAccepted currency is only GBP (£)
All deposits are instantly processedXSupported deposit and withdrawal options are relatively few
Depositing is freeXA £2.50 fee apply to withdrawals
Minimum deposit amount is relatively low (£100) allowing everyone to afford depositingXMaximum withdrawal amount is relatively low (£1,000/ day, £3,000/ week, £5,000/ month), so it’ll take long to withdraw a big amount
Maximum deposit amount is relatively high (£5,000) allowing high rollers to deposit large sumsXMaximum withdrawal amount applies to winnings from progressive jackpots
Minimum withdrawal amount is relatively low (£10) making it easy to win amounts that can be withdrawnXPay-outs are not fast, as all withdrawals are held pending for 72 hours before processing


In Big Thunder Slots, you’ll be playing in GBP (£). Putting real money into your casino account is pretty easy. After logging in, the Menu button will have the route to the deposit page. There, pick a preferred deposit option, enter the requested information, and hit “deposit”.

Deposit Options

Big Thunder Slots supports the following for making your deposits – Visa, Mastercard, Maestro, Paysafe Card, PayPal, and Pay By Mobile. By every standard, this is a small list. We missed e-wallet options like Skrill and Neteller, as well as the bank transfer options. However, with the supported options, depositing couldn’t be more convenient.

Deposit Limit

Big Thunder Slots has friendly deposit limits. The minimum you can put into your account is £10, while the maximum is £5,000.

The £10 minimum deposit cap is low ensuring that everyone will afford to deposit. Also, the maximum deposit cap is high, ensuring that high rollers who need to deposit large amounts for their gaming can easily do that.

Deposit Processing Time

Big Thunder Slots processes deposits instantly. So, immediately after your transaction, the funds will be available to use for playing.

Deposit Fee

Big Thunder Slots gives free depositing. Fees do not apply when depositing except when using the Pay By Mobile option which draws a 15% processing fee.


Winners of Big Thunder Slots can request payment and will be paid. Also, the process of requesting payment is pretty easy. After logging in, the Menu button can also lead to a withdrawal page. Once there, pick a preferred withdrawal option, enter the requested information, and hit “withdraw”.

Withdrawal Options

Big Thunder Slots supports the following for requesting payment – Visa, Mastercard, Maestro, Paysafe Card, and PayPal. That is every of its deposit option except Pay By Mobile.

Withdrawal Limits

The minimum withdrawal limit is £10. This is friendly – it is low, making it easy to win an amount that can be withdrawn. However, the maximum withdrawal limit is £1,000 per day (£3,000 per week, and £5,000 per month).

This is not friendly because whereas a high limit is desirable, it is relatively low. With these low caps, withdrawing a large balance will take a really long time. For example, it’ll take almost a year to complete withdraw a £50,000 balance.

Also, most online casinos exempt progressive jackpot wins from caps like this. However, Big Thunder Slots does not. Thus, should you win a progressive jackpot, withdrawing your money is subject to this low £5,000 per month cap? One word for the experience will be “sufferable”.

Pay-out Speed

Big Thunder Slots has a 72-hours withdrawal pending period. That is, every withdrawal request submitted is frozen for 72 hours. It is after this that the request is processed. Then if approved, the payment is issued; and will be received in 1 to 3 days. Thus, from submitting a request to receiving payment, it’s about 5 – 7 business days.

Thus, the 72-hours that withdrawals are held pending delays payment. Big Thunder Slots says the pending period benefits players; explaining that should players run out of funds for playing while a withdrawal is pending, they can cancel the withdrawal so that the funds are made available for playing again.

However, in our opinion, the pending period is predatory. It is the definition of risking losing the bird in hand while chasing after the many in the bush.

Withdrawal Fee

Big Thunder Slots does not give free withdrawing. Every withdrawal draws a £2.50 processing fee.

Customer Support Service

 Hits Misses
Customer support team can be contacted via email ( response time is within 2 working days which is not very fast
Support service is available 24/ 7XInstant feedback channels like telephone and Live Chat are not supported
An FAQ is provided for self-help  

Contact Help

Should you have questions or issues, Big Thunder Slots has a support team that is there to provide you with the assistance you need. The team can be reached 24/ 7. However, the only contact channel supported is email (

Should you submit an email, a reply will come within 2 working days. While not overly late, this is not the fastest response out there. It is another reason to miss instant-feedback channels like telephone and Live Chat.

Self Help

Should you want answers quicker, you can check the self-help FAQ (Frequently Asked Question) resource in the casino’s website. The FAQ has 5 sections: Account Management, Deposits, Bonuses, Withdrawals, and Support. Thus, you’ll find ready answers to a good range of your questions.

ALSO SEE: Slots Kingdom Review


Inspired by the awesome spectacle of a thunderstorm, Big Thunder Slots can only be promising an awesome online casino gaming experience.

Thankfully, you’ll find that this legit and safe online casino lives up to this promise of providing an awesome experience (but only if you’re a lover of the spinning reels). Why? Like many of its sister sites from Jumpman gaming, it is a slot-focused online casino. With the spinning reels of slots accounting for 820+ of its 850+ games, it has an awesome slot collection.

Whatever slot reel you like, whatever features you like in your slots, and whatever slot theme excites you, Big Thunder Slots has them for you. Games come from top providers, so quality is top-notch all-round; and mobile gaming is provided, giving you the ultimate freedom of gaming on the go.

A few other games are provided (Blackjack, Baccarat, Roulette, and Live Casino games), but the options are very limited.

Big Thunder Slots has a range of exciting bonuses; giving you tons of free plays as well as tantalizing out-of-casino prizes. In the money matters; with convenient banking options and friendly minimum limits, you’ll be able to fund your account and request payments without stress. Lastly, help is always an email away.

However, this does not mean that Big Thunder Slots is the perfect online casino. There are definitely areas that we’ll like to see some improvement. These are highlighted as “misses” in the different sections of this review.

However, if you can live with these (like the lack of options for non-slot players, unfriendly bonus conditions, somewhat slow pay-out, etc), you’ll find joy in Big Thunder Slot.

In our opinion, its “hits” far outweigh its “misses”; also, many players will be able to live with its “misses” anyways. Thus, on the whole, Big Thunder Slots is an awesome online casino. Yes, we recommend it.

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