Dunder Sister Sites

Casino Gods - 100% Up To £300 Bonus

On this page is a list of the best Dunder Sister Sites. Dunder Casino launched in 2015. It is one of many sites owned and operated by Gaming Innovation Group (GiG), under the MT Secure Trade Ltd license from Malta. It is renowned for its generous slots bonus offers, huge game catalogue and professional customer service.


Scroll down the page to claim your bonus …

  1. Temple Nile
  2. Genesis Casino
  3. Casino Calzone
  4. Rolla Casino
  5. Metal Casino
  6. Casumo
  7. Casimba
  8. Guts Casino

We regularly update this page so keep coming back to find more sites. We’ve pulled to together this list of our favourites on the UK market – some from the same GiG stable of brands, others that just fit because they are equally tried and trusted and offer a similar gaming experience. The bonuses listed here all have fair and transparent promotional terms and conditions and there are lots of great free spins to pick up, many available to play on the best NetEnt slots.


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All Sites are UK Licensed UK
Temple Nile

100% Up To £500 Welcome Bonus

Plus 30 Bonus Spins

18+. New players only. 1 bonus offer per player. Min. deposit £20. Max bonus bet £5. Extra spins on selected games only- must be used within 72 hours. Bonus funds expire in 30 days, unused bonus shall be removed. Bonus funds are 100% match up to £500 + 30 extra spins on 1st deposit, 25% match up to £800 + 25 extra spins on 2nd deposit, and 50% match up to £200 + 50 extra spins on 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 40x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Terms applywww.begambleaware.org

Another big-name casino to have launched in recent years and offer much the same experience as Dunder is White Hat Gaming’s Temple Nile. This site has an Egyptian theme and offers a full suite of over 800 slots as well as live dealer games from Evolution gaming. Another classy site from a top tier operator – you’ll be well-looked after through generous bonusing and 24/7 customer support.

  • Classy mobile version of site with easy navigation
  • Fast withdrawals
  • Live chat support
  • Big, trusted operator
  • Neteller and Skrill payments
Genesis Casino

100% Up To £100 Welcome Bonus

Plus 300 Extra Spins

18+, Full T and Cs Apply. New players Only. £10 min deposit. £5 max bet using bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on Starburst games will be credited per day for 9 days after qualifying deposit/wager is met. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Skrill + Neteller excluded. Always refer to Bonus Terms - www.begambleaware.org

This casino is brought to us by Genesis Global Ltd. Like Dunder it looks beautiful, with a really epic space-age theme. Here you can take your pick from games provided by everyone from Big Time Gaming and Thunderkick to NetEnt and Microgaming. You’ll be showered with lots of free spins and bonuses. Other highlights include a Paypal-friendly cashier and live chat support.

  • Awesome site from big, trusted operator
  • 300 spins on first deposit
  • Live Chat Support
  • Massive slots catalogue
  • Paypal accepted
Casino Calzone

100% Match Bonus Up To £100

+ Up To 100 Extra Spins

18+, New Customers Only, Min Deposit: £10, Ts and Cs Apply, WR 30x Bonus + Deposit, WR 35x Extra Spins Winnings, Neteller, Skrill and Pre-Paid excluded, Bonus Max Bet: £5, Available real money funds can be withdrawan at any time, Max cashout from bonus is £5,000, Game Weightings apply, www.begambleaware.org

Just when you thought online casinos couldn’t get any stranger, along comes one with a pizza-restaurant theme! Yes, if you like your folded pizza stuffed with Starburst, Bonanza, and a stash of free spins, then you’re in the right place. Get on board another MT Secure Trade casino to gorge on hundreds of quality games, fast cashouts and a clever pizza-themed loyalty program. What more could you want? Dough balls?!

  • Excellent ‘pizza wheel’ loyalty program
  • Massive game catalogue for slots fans
  • Quick cash outs
  • 24/7 live support
  • Neteller and Skrill accepted
Rolla Casino

10% Weekly Cashback Up To £1,000

Credited In Cash - No Wagering Requirements

New Customers Only, Terms and Conditions Apply, 18+ 10% back on net losses, real money bets minus real money wins. Valid 10:00GMT Fri to 10:00GMT Fri. Min £1, Max £1,000. money back credited, every Friday at 10:01 GMT. www.begambleaware.org

Another site launch from 2019 is Rolla Casino. This site is also built on the MT Secure Trade Casino platform and has a license under the Malta Gaming Authority. It boasts an original loyalty program with a headline offer of 10% cashback EVERY week. So if you lose, you get something back! All this plus a kick-ass game selection, Neteller, Skrill and Trustly on the cashier, and live chat 24/7.

  • New casino with unique loyalty program
  • Over 600 games to play on desktop and mobile
  • Full Big Time Gaming suite of slots
  • Skrill, Neteller, Trustly and Paysafecard
  • Live Chat 24/7
Metal Casino

Regular Extra Spins and Bonus Offers

18+, New Customers Only, Ts and Cs Apply, BeGambleAware

If you like you’re gambling to be down and dirty then there is no better place to get spinning than Ozzy Osbourne’s Metal Casino. A true original if ever there was one, this site is fronted by one of heavy metal’s bona fide legends. It’s built on the MT Secure Trade platform and backed by a bunch of Black Sabbath fans with a love of gambling. What more could you want?

  • One of the coolest brands in the UK and Europe
  • Exclusive Twitch.tv casino channel
  • Get exclusive metal music march
  • Hundreds of the best slots
  • 24/7 Live Chat support
Casumo – A Casino

100% Up To £300

+ 30 Spins on Book of Dead (No Deposit)

*18+. New UK customers only. Opt-in required. 30 free spins on Book of Dead game upon registration with NO wagering requirements or deposit required for spins AND 100% deposit bonus up to £300: Min deposit £10 and 30x wagering requirements apply on bonus (game weighting applies). Max bet applies. Ts and Cs Apply. Please gamble responsibly, www.begambleaware.org

Here then, is a true pioneer of online casinos – Casumo. This is a fully independent gambling brand, which was the first to mix the ‘gamification’ of social gaming with casino play. They are one of the most popular sites we know, offering thousands of games, a superb immersive experience, and a loyalty program second to none. Join today and you won’t be disappointed.

  • Huge, trusted brand name
  • Set the standard for immersive casinos with progressive rewards
  • Slots, slots and more slots
  • Book of Dead free spins
  • 24/7 live support

100% Up To £500 Welcome Bonus

Plus 50 Bonus Spins on Starburst

20 free spins on Fortunium game only- subject to age verification. Max spin value £0.10. Spins must be used within 72 hours. Winnings capped at £20 and subject to 35x wagering. 18+. New players only. 1 bonus offer per player. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds expire in 30 days, unused bonus funds will be removed. Bonus funds are 100% match up to £500 on your 1st deposit, 25% match up to £1000 on your 2nd deposit, and 50% match up to £500 on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Terms apply. www.begambleaware.org

Want more from White Hat Gaming? If you enjoy Temple Nile, then you’ll love this big cat-themed super-online casino too. You might have even seen the ad on TV with the lion. There are tons of great slots, a generous three-step welcome bonus, including 125 bonus spins, and a super-slick mobile experience.

  • Another White Hat Gaming brand – top tier operator
  • Massive slots catalogue to choose from
  • Up to £500 in welcome bonuses
  • Excellent on mobile
  • Top quality live dealer games
Guts Casino

100% Up To £100 Bonus

+ Extra Spins on Vikings by NetEnt

18+, New Customers Only, Min Deposit: £10, Ts and Cs Apply, WR 35x Bonus

If you like Dunder Casino then we’re pretty sure you’ll like Guts too. This casino has also been around for some time – since 2013 – and it is also an MT Secure Trade Casino. In short, this is a trusted brand with a wealth of experience in providing top class online gambling. They have a huge game catalogue covering all the big providers in slots and live dealer, they also offer super-fast withdrawals and lots of generous bonusing.

  • Long-standing UK and European Casino
  • Book of Dead spins offers
  • Accepts Paypal
  • Withdrawals in under 2 hours
  • Recent re-brand looks awesome on desktop and mobile


Dunder Sister Sites – What’s It All About?  

Let’s be honest, the online gambling market in the UK is a confusing place at the best of times. If you’re not sitting there wondering what on earth a Megaway is, then you’re probably being baffled by the latest free spins terms and conditions, or routing through your cupboards to find the right ID to verify yourself at your next casino.

And to cap it all, there are literally thousands of sites to choose from. So, where to start?

Well, one way of making a choice is to look for brands that are similar to ones you already hold an account with. In many cases, your favourite casino will be part of a group and operated by one license holder. These sites will offer the same games, very often have the same customer support team behind them, and comp their customers with a similar set of loyalty rewards.

So, that brings us to Gaming Innovation Group (GiG), a Malta-based gambling business whose subsidiary, MT Secure Trade are the licensors for Dunder Casino and a number of ‘sister sites’ who also run on the same platform. What you get at Dunder, you will get more of at sites in that group – sites like the ones listed on this page. If you’re savvy enough to know this, which you now are from reading this, then it’s going to help you cut through the noise and find a new casino that you can confident you are going to enjoy.

So …

The majority of casinos on this page are owned and operated by Gaming Innovation Group (GIG) or MT Secure Trade, a division of GIG. That means that not only will you be impressed with the range of games on offer, but you will also be familiar with the kind of promotions available, including plenty of rewards and level-ups for those who continue to play regularly.

Each of our Dunder Sister Sites is also licensed by the UK Gambling Commission and the Malta Gaming Authority.

Other Casinos In Our List

We have recently added a few new casinos to the list that don’t come under the GIG umbrella. Casinos like Temple Nile, run by White Hat Gaming, and Genesis Casino from Genesis Global, are new, vibrant place to play slots and share all the characteristics of the best GIG sites. They have huge game catalogues as well as offering really generous sign up bonus packages, including plenty of free spins. They also come with a very good reputation amongst UK gamblers.

Like all the casinos featured on The Slot Buzz, the sites listed on this page have been comprehensively reviewed by our team so that you can learn all about what’s on offer before signing up. You will also be able to note the significant terms and conditions of each site’s welcome package so that you know what you are signing up for – this includes any restrictions on what you can do with winnings from free spins. So, if you’re not sure which site is for you, make sure you click through and read each article before you decide where to play.

Finally, we suggest browsing similar lists of Casumo Sister SitesPlay OJO Sister Sites and Rizk Sister sites if you’re looking for more options.

And remember, have fun and gamble safely!


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