Great Slots sister sites are none at this moment. Great Slots Casino (greatslots.com) is operated by Fortune Forge Limited which is a Costa Rica based company.
Great Slots Casino is operating under a casino licens issued by Anjouan Gaming Authority

Author: Matthew Whittaker
Fact Checker: Lucas Chen
Published:
Great Slots sister sites are none at this moment. Great Slots Casino (greatslots.com) is operated by Fortune Forge Limited which is a Costa Rica based company.
Great Slots Casino is operating under a casino licens issued by Anjouan Gaming Authority
Great Slots Casino, which launched in 2025, operated by Fortune Forge Limited. While this newcomer has a lot of potential, here's one thing that sticks out – there actually aren't any Great Slots sister sites to speak of. Fortune Forge Limited hasn't taken the leap to expanding their casino portfolio just yet, keeping Great Slots as their flagship brand.
So, what the heck are sister sites anyway, and what's the big deal? Simply put, sister sites are online casinos owned and run by the same company. Think about it like going to the pub and finding out its owned by the same bloke who runs the shop down the street. They're like branches of the same tree – sharing similar roots in terms of software, payment methods, customer service and whatnot but each has its own charm and what it has to offer. Players often head to sister sites because if they love the style of a particular casino, chances are they'll love its siblings too.
Since there's no Great Slots sister sites yet (unfortunately!), players looking for something similar to Great Slots will need to look elsewhere. But before we get into that, the good news is there are some solid alternatives that can scratch that Great Slots itch without the family connection.
3 Sites that are a Great Alternative to Great Slots
While you won't find a proper Great Slots sister site, these 3 casinos offer a similar vibe for players wanting some variety:
| Casino | Website | Established | Welcome Bonus | Min Deposit | Wagering | Trustpilot |
|---|---|---|---|---|---|---|
| Great Slots | greatslots.com | 2025 | 100% up to €500 | €20 | 35x | 0/5 |
| SpinDog Casino | spindog.com | 2025 | 150% up to €900 + 150 FS | €20 | 40x | 0/5 |
| VibroBet | vibro.bet | 2025 | 225% up to €4,000 + 210 FS | €20 | 40x | 0/5 |
| Fish & Spins | fishandspins.com | 2025 | 150% up to €750 + 100 FS | €20 | 40x | 2.9/5 |
SpinDog Casino gets the edge with a pretty generous 150% welcome bonus that trumps Great Slots' 100% deal. VibroBet is going all out with an ambitious 225% bonus reaching €4,000 – although that higher wagering requirement means you'll need to play through a lot more before you can cash out. Fish & Spins is somewhere in between, with some fairly decent bonuses and the distinction of being the only one with actual Trustpilot reviews.
Now, don't read too much into there being no Great Slots sister sites – tons of successful operators focus on perfecting their main brand rather than spreading their time and resources too thin. But, it does mean players looking for a bit of variety within the same operator ecosystem are going to have to look elsewhere. When a company has sister sites, you tend to get a similar service from the parent company – so when they dont exist, its like putting all your eggs in one basket.
For now, Fortune Forge Limited seems content nurturing their single casino – whether they'll eventually expand their family remains to be seen but until then, these alternatives should do the trick and scratch that same gaming itch.

SpinDog Casino launched this year with the kind of energy you'd expect from a dog-themed brand – lots of tail wagging and treat dispensing. They're not a Great Slots sister site, but both casinos share that new-to-market enthusiasm. SpinDog's 150% welcome bonus reaching €900 with 150 free spins definitely outdoes Great Slots' more conservative 100% offer. Sure, the 40x wagering runs a bit higher than Great Slots' 35x requirement, but when you're getting half again as much bonus money, those extra spins don't feel like punishment.
| SpinDog Casino Quick Facts | |
|---|---|
| Website | spindog.com |
| Established | 2025 |
| Great Slots sister site? | No |
| Trustpilot Score | 0/5 |
| Welcome Bonus | 150% up to €900 + 150 free spins |
| Promo Code | N/A |
| Minimum Deposit | €20 |
| Wager Requirements | 40x |
| Review | SpinDog Casino review |

VibroBet operates like someone cranked the volume to eleven and decided that was the perfect setting. Their 225% welcome bonus climbing to €4,000 with 210 free spins is the kind of offer that makes you scroll back up to double-check the numbers. Both VibroBet and Great Slots started in 2025, but VibroBet clearly decided to make some noise in their debut year. The €20 entry point keeps things reasonable, though that 40x wagering means you'll be putting in serious time before seeing withdrawal-ready funds.
| VibroBet Casino Quick Facts | |
|---|---|
| Website | vibro.bet |
| Established | 2025 |
| Great Slots sister site? | No |
| Trustpilot Score | 0/5 |
| Welcome Bonus | 225% bonus up to €4,000 + 210 free spins |
| Promo Code | N/A |
| Minimum Deposit | €20 |
| Wager Requirements | 40x |
| Review | VibroBet Casino review |

Fish & Spins combines underwater themes with spinning reels in what could have been a gimmicky mess but somehow works. Another 2025 startup, they've actually managed to collect some Trustpilot reviews and earned a 2.9/5 rating – nothing spectacular, but at least it's real feedback from actual players. Their 150% bonus reaching €750 with 100 free spins strikes a middle ground between conservative and flashy, sticking with that €20 minimum and 40x wagering that seems standard across this group. Fish & Spins feels like the steady option – not the most exciting choice, but they've got some track record to show.
| Fish & Spins Casino Quick Facts | |
|---|---|
| Website | fishandspins.com |
| Established | 2025 |
| Great Slots sister site? | No |
| Trustpilot Score | 2.9/5 |
| Welcome Bonus | 150% up to €750 + 100 free spins |
| Promo Code | N/A |
| Minimum Deposit | €20 |
| Wager Requirements | 40x |
| Review | Fish & Spins Casino review |
| All Great Slots Sister Sites | no casino sister sites available |
| Website | greatslots.com |
| Welcome Bonus | 100% bonus up to €500 |
| Promo Code | N/A |
| Minimum Deposit | €20 |
| Wager | 35x |
| Casino License | Anjouan Gaming Authority |
| Owner | Fortune Forge Limited |
| Established | 2025 |
| Trustpilot Score | 0/5 |
Great Slots Casino launched in 2025 under Fortune Forge Limited, a player-friendly approach that fits their no-frills name to a T. They've zeroed in on what most players are looking for : a solid selection of slots without all the extra clutter getting in the way.
The welcome package isn't going to blow anyone away with its 100% bonus up to €500, but all things considered, the 35x wagering requirement isn't too bad. The €20 minimum deposit keeps things straightforward, but we can't help but feel that the lack of free spins in the welcome offer is a bit of a missed trick these days.


One thing that stands out about Great Slots is their licensing through the Anjouan Gaming Authority. While it's not the most prestigious regulatory body, it does provide some basic player protections and oversight. The casino's 2025 launch means they're working with current tech and modern payment systems, though their zero Trustpilot score just reflects their newness rather than any quality issues.
The standout feature for us is their weekly cashback program that returns 10% of your net slot losses every Thursday. This is no marketing fluff – it's a genuine safety net that helps soften the blow when the reels aren't cooperating.
How the Cashback Works
| Aspect | Details |
|---|---|
| Cashback Rate | 10% on net losses |
| Payment Schedule | Every Thursday |
| Claim Period | 7 days from availability |
| Wagering Requirement | 1x (very reasonable) |
| Maximum Weekly | €5,000 |
| Eligible Games | Slots only |
| Calculation Period | Thursday 10:00 UTC to Thursday 09:59 UTC |
The system runs on a Thursday-to-Thursday cycle, calculating your net losses specifically on slots during that seven-day window. If you're down €200 on slots for the week, you'll get €20 back as cashback. Just keep in mind that you need to actively claim it within seven days, or it'll disappear into thin air.
Here's a practical example: Say you lose €500 on slots but win €600 on blackjack during the promotional week. Despite your slot losses, you won't qualify for cashback because you're up €100 overall. The program only kicks in when you're genuinely down for the week.
What makes this cashback program actually useful is the minimal 1x wagering requirement. You're not jumping through hoops to get your money – just one playthrough and you're free to withdraw or continue playing. The €5,000 weekly maximum means high rollers get some real value too, not just token amounts.
Great Slots supports the standard payment options you'd expect from a modern casino:
Popular Deposit Methods:
Withdrawal Processing:
The slots game library swings big on slots – you would hardly expect otherwise from the name Fortune Forge Limited . To ensure players get to enjoy their games without a hitch, they've partnered with established software providers & throw in some good old fashioned RNG fairness to the mix.
Game Categories:
The site does a great job of keeping the navigation clear & easy to use – I didn't have to spend ages searching through menus for the games I wanted. Search works as it should, & the games load nice & quickly, without getting bogged down with too many ads cluttering the interface.
| Support Channel | Availability | Response Time |
|---|---|---|
| Live Chat | 24/7 | 2-5 minutes (they claim) |
| Always open | Day or two usually | |
| FAQ Section | Always there | Right away |
| Phone Support | Doesn't exist | N/A |
Customer support is all the usual channels, but I have to say that given the casino is relatively new, it's hard to gauge how they'll do on response times & overall quality.
Security Measures We Like:
Great Slots Casino shows itself to be a solid, if not exactly spectacular option for slot enthusiasts. One good point is that they seem to be avoiding the trap of over-hyping their bonuses with silly terms & conditions. The cashback scheme is pretty attractive for regulars too – a nice bit of extra cash to look forward to each week.
Best For:
Not Ideal For:
Does Great Slots Casino have any sister sites?
No, Great Slots Casino doesn't have any sister sites. The casino is operated by Fortune Forge Limited, who launched Great Slots in 2025 as their flagship and only brand. The company has chosen to focus on perfecting their single casino rather than expanding their portfolio, so there are no other casinos under the same operator to explore.
What welcome bonus does Great Slots Casino offer?
Great Slots Casino offers a 100% welcome bonus up to €500 with a minimum deposit of €20. The bonus comes with a 35x wagering requirement, which is slightly lower than many competitors. However, unlike many other casinos, the welcome package doesn't include any free spins, focusing purely on the deposit match bonus.
What is the weekly cashback promotion at Great Slots?
Great Slots offers a 10% weekly cashback on net slot losses, paid every Thursday. You can receive up to €5,000 cashback per week, and the bonus only has a 1x wagering requirement. To qualify, you need to have overall net losses for the week and must claim the cashback within 7 days of it becoming available. The cashback is calculated from Thursday to Thursday and only applies to slot games.
What payment methods are available at Great Slots Casino?
Great Slots accepts major credit and debit cards, e-wallets like Skrill and Neteller, bank transfers, cryptocurrency, and prepaid vouchers. The minimum deposit and withdrawal amount is €20. E-wallet withdrawals process within 24-48 hours, while card withdrawals take 3-5 business days and bank transfers require 5-7 business days to complete.
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