SlotsMillion Sister Sites

Operated by SLTM Ltd (formerly Alea Gaming Ltd), Malta-registered company C-63119 · Last reviewed: 2026-08-14

Is SlotsMillion Connected to Any Sister Sites?

SlotsMillion is one of the more distinctive names in online slots history, but for UK players searching for a network of related brands, the answer is straightforward: there isn't one. SlotsMillion is operated exclusively by SLTM Ltd, a Malta-registered company with registration number C-63119. Independent operator databases, including CybercasinoIndex, AskGamblers, and GoodLuckMate, each confirm that SLTM Ltd runs only this single casino brand. There is no second or third property sharing the same licence holder, account infrastructure, or corporate registration that would qualify as a genuine sister site under UK terms.

This single-brand structure is unusual in an industry where most operators run multiple skins across shared platforms. Companies like 888 Holdings, Kindred Group, and Entain typically operate a dozen or more casino and sportsbook brands under one licensing umbrella, sharing back-end technology, payment processing, and often cross-promotional bonuses. SLTM Ltd took a different route, building SlotsMillion as a standalone product rather than part of a wider portfolio. For players who value simplicity and a single point of reference, this can actually be a positive — there's no confusion over which sister brand offers a better deal or which one shares your self-exclusion status.

The Rainmaker Network Question

Some research into SlotsMillion's history surfaces a connection to the Rainmaker Network affiliate programme, which lists SlotsMillion alongside three other casino brands: Winoui, Mad Nix, and Wild Sultan. On the surface, this might suggest a sister-site relationship. However, deeper verification shows that these three additional brands are operated by The Luck Factory B.V., a separate company registered in Curaçao — an entirely different licensing jurisdiction to SLTM Ltd's Malta and UK registrations. No confirmed formal corporate link between The Luck Factory B.V. and SLTM Ltd has been established in primary sources. Because of this, we exclude Winoui, Mad Nix, and Wild Sultan from this guide as sister sites. Affiliate programme groupings are a marketing convenience, not proof of shared ownership, and UK players should not assume that account details, bonuses, or self-exclusion status carry across between SlotsMillion and any of these three brands.

It's also worth noting that a parent entity called Rainmaker Network Ltd has been cited in some secondary sources in connection with SlotsMillion's ownership structure. However, the precise corporate hierarchy between Rainmaker Network Ltd and SLTM Ltd is not detailed anywhere on SlotsMillion's own official channels, and we have not been able to independently verify this relationship through a primary source. Where evidence is this thin, we treat the claim as unconfirmed rather than presenting it as fact.

SlotsMillion's UK Market Exit

Perhaps the most important piece of information for UK-based readers researching SlotsMillion in 2026 is that the casino no longer operates in this market at all. In March 2023, SlotsMillion formally announced its withdrawal from the UK, ceasing to accept new UK registrations and blocking deposits from existing UK accounts. This means that even if a UK player wanted to use SlotsMillion today, they would not be able to create an account, log into an existing one to deposit, or claim any UK-facing promotion. The platform continues to operate in other regulated markets where it retains licensing, but the UK is no longer one of them.

This exit is a key reason this guide exists. Since there is no active SlotsMillion product for UK players and no sister site to redirect to, we've instead focused on identifying independently licensed UK casinos that offer a broadly comparable experience — large slots libraries, credible responsible gambling tools, and solid safety track records — for players who previously used SlotsMillion and are now looking for a UKGC-regulated alternative.

Operator Background: Who Is SLTM Ltd?

SLTM Ltd was originally incorporated under a different name — Alea Gaming Ltd — on 16 December 2013, before later rebranding to SLTM Ltd. The company is registered in Malta under number C-63119, placing it under the jurisdiction of one of Europe's most established gambling regulators, the Malta Gaming Authority (MGA). SlotsMillion itself launched shortly after incorporation, going live in the 2014–2015 period.

The brand quickly built a reputation on the sheer scale of its game catalogue. Various sources cite figures ranging from around 3,000 to over 4,000 slot titles, sourced from more than 60 different software providers. This made SlotsMillion one of the largest single-brand slots libraries in the industry at the time, and it leaned heavily into this identity — the name itself signals a slots-first, volume-driven proposition rather than a broader casino or sportsbook offering.

SlotsMillion also earned a place in industry history as one of the first online casinos to offer virtual reality (VR) casino games, allowing players with compatible headsets to experience a 3D casino floor environment. This was a genuinely novel feature for its era and helped the brand stand out in review coverage and industry award nominations. The casino went on to win Online Slots Operator of the Year in 2019 and Mobile Operator of the Year in 2020, both of which point to a period of strong operational quality and player satisfaction prior to the UK exit.

Licensing History

While active in the UK, SlotsMillion held a dual-licence structure that reflected an ambitious approach to market compliance. It carried a licence from the Malta Gaming Authority (cited by secondary sources as MGA/B2C/256/2013), a remote casino licence from the UK Gambling Commission, and an additional licence from the Swedish gambling regulator, Spelinspektionen. Holding licences across three separate jurisdictions — Malta, the UK, and Sweden — required the operator to comply with three distinct sets of player protection and compliance rules simultaneously, which is a meaningful undertaking for what was, at its core, a single-brand operation.

Third-party sources have cited a UKGC account reference number for SlotsMillion, but this figure comes from secondary review sites rather than a primary, live UKGC public register check, and given the UK market exit, we treat this as unconfirmed for the purposes of this article. Readers wanting to check any operator's current licence status should always go directly to gamblingcommission.gov.uk rather than relying on cached or third-party figures, particularly for brands that have exited the market, since licence status can lapse or be formally surrendered.

What SlotsMillion Offered UK Players While Active

During its time serving the UK market, SlotsMillion built its reputation around a few standout features beyond its game catalogue size. One of the more notable was a feature called Lock My Withdrawal. This allowed players to submit a withdrawal request and then lock it in place so that it could not be cancelled — a subtle but genuinely useful responsible gambling mechanism. Many casinos allow players to reverse a pending withdrawal and gamble the funds back, which can undercut a player's own intention to walk away with winnings. By preventing this reversal, SlotsMillion gave players a concrete tool to protect their own decision-making in the moment.

Beyond this signature feature, SlotsMillion offered the standard suite of UKGC-mandated responsible gambling tools during its UK tenure, including deposit limits, session reminders, and self-exclusion options. Combined with its VR gaming novelty and enormous slots selection, the brand carved out a genuine niche as a specialist for players who wanted breadth of game choice above all else.

Comparison Table: SlotsMillion vs UK Alternatives

This table is designed to give a quick sense of where SlotsMillion sat in the market versus where UK players might now look. It's worth stressing that none of the alternative operators listed have any corporate connection to SLTM Ltd — they are included purely because their product profile, catalogue size, or responsible gambling approach offers a comparable experience for someone who previously used SlotsMillion.

Detailed Look at UK Alternatives

Casumo

Casumo is headquartered in Malta and holds its own independent UK licensing arrangement, entirely separate from SLTM Ltd. It's included here largely because its overall profile mirrors SlotsMillion closely: a large, multi-provider slots catalogue, a strong design-led user experience, and a genuinely standalone operator structure with no sister sites of its own. Casumo supports major UK debit cards, offers same-day withdrawals in many cases, and includes the full set of UKGC-required tools — deposit limits, reality checks, and GamStop-linked self-exclusion. The platform runs well through mobile browsers without requiring a dedicated downloadable app, and Trustpilot sentiment for the brand tends to sit above the sector average.

LeoVegas

LeoVegas is now part of MGM Resorts International, following a 2022 acquisition, which places it under a substantially larger corporate umbrella than SlotsMillion ever operated within. It earned its reputation as one of the pioneers of mobile-first casino design, and that mobile focus remains central to its offering today. LeoVegas holds a UKGC remote casino licence and complies with the Licence Conditions and Codes of Practice (LCCP) that govern all UK-facing operators. Its responsible gambling toolkit includes deposit limits, session time limits, self-exclusion, and GamStop integration, and withdrawal processing — to both debit cards and e-wallets including PayPal — is frequently cited by players as fast. Unlike SlotsMillion's single-brand approach, LeoVegas operates several sub-brands and white-label variants, so its corporate structure is genuinely different in scale.

Videoslots

Of all the alternatives in this guide, Videoslots is arguably the closest match to what SlotsMillion offered. It is independently operated with no connection to SLTM Ltd, but shares the same specialist identity: an enormous slots catalogue spanning thousands of titles from hundreds of software providers, positioning it as one of the largest slots-focused platforms in the industry. Videoslots holds both a UKGC remote casino licence and an MGA licence, placing it firmly in the dual-licence category — much like SlotsMillion did historically. Distinctive features include Battle of Slots, a tournament-style competitive mode, and the Weekend Booster cashback promotion. Its responsible gambling suite is comprehensive, including a 'Take a Break' function alongside deposit, wager, loss, and session limits. Support operates 24/7 via live chat and email, and the standalone, no-sister-site operator model closely mirrors the structure SlotsMillion had before its UK exit.

Mr Green

Mr Green is owned by William Hill, which itself sits under the 888 Holdings group — a considerably larger and more diversified corporate structure than SLTM Ltd's single-brand approach. Despite this, Mr Green has built a strong individual reputation, particularly around responsible gambling. It was an early adopter of Green Gaming, a proprietary tool that analyses player behaviour data to generate personalised risk assessments and recommendations — arguably a more sophisticated approach than most standard RG toolkits. The casino holds a full UK remote casino licence, supports GamStop, and offers a premium slots and live casino catalogue. Payment support includes major debit cards and a range of e-wallets, with generally fast withdrawal processing. Players should be aware that being part of the 888 Holdings network means Mr Green operates within a multi-brand ecosystem, quite unlike SlotsMillion's solo-brand history.

Dream Vegas

Dream Vegas takes a different approach again, positioning itself around a luxury casino theme rather than sheer game-count volume. It holds a UKGC remote casino licence and has no connection to SLTM Ltd. It's included in this guide as a smaller-scale alternative for players who appreciated SlotsMillion's polish and curation rather than pure catalogue size. Dream Vegas offers standard UKGC-aligned responsible gambling tools, including deposit limits, self-exclusion, and reality checks. Its safety index sits at Medium in this guide, reflecting a shorter operational track record relative to more established names like Casumo or LeoVegas — this isn't a red flag in itself, but it does mean players should double-check current licence status and independent review scores before depositing, since newer brands can occasionally change hands or adjust their offering more frequently than long-established ones.

Genesis Casino

Genesis Casino is run by Genesis Global Limited, an operator entirely separate from SLTM Ltd that holds both UKGC and MGA licences. Genesis Global operates multiple brands under one portfolio, which is structurally quite different from the single-brand SLTM Ltd model — players joining Genesis Casino are entering a multi-brand network rather than a standalone operation. The Medium safety index reflects some historical player complaints documented on independent review platforms, particularly around bonus withdrawal processes, so it's worth reviewing current terms carefully before opting in to any promotion. Responsible gambling provisions include deposit limits, cooling-off periods, and GamStop integration, and the platform supports GBP payments via debit card, with e-wallet availability worth confirming directly on the live site.

Bonus Terms: Important Caveats

Because SlotsMillion no longer accepts UK players, there is no active UK welcome bonus to evaluate for this brand — any historic offer details are no longer relevant to a UK audience. For the alternative casinos listed, welcome bonuses do exist, but terms are subject to regular change. Wagering requirements, maximum bet restrictions during bonus play, minimum deposit thresholds, and time limits to clear bonus funds are all standard conditions that vary by operator and by promotional period. Readers should always check the current terms directly on each operator's UK site before depositing, rather than relying on cached bonus figures from any third-party guide, including this one.

Licensing and Safety Review

All the alternative operators featured in this guide hold confirmed UKGC licensing, either exclusively or as part of a dual-licence structure alongside MGA. This is the baseline standard for any UK-facing casino and ensures compliance with the Licence Conditions and Codes of Practice, including mandatory responsible gambling tools, fair game testing, segregation of player funds, and adherence to advertising standards. Specific UKGC licence numbers have not been included in this article for any operator, including SlotsMillion, because a live primary-source verification via the UKGC public register was not completed during this review cycle. Readers should treat any licence number cited elsewhere online as unverified until confirmed at gamblingcommission.gov.uk.

Safety index ratings in this guide reflect a combination of licensing status, operational track record, player review sentiment, and the presence of a comprehensive responsible gambling toolkit. Casumo, LeoVegas, Videoslots, and Mr Green all receive a High rating on the basis of established histories, strong compliance records, and consistently positive independent review coverage. Dream Vegas and Genesis Casino receive a Medium rating — not because of any confirmed regulatory failing, but reflecting either a shorter operational history or documented player complaints that warrant a more cautious approach from new depositors.

Payment, Account, and Mobile Notes

Across the alternatives listed, GBP-denominated deposits via major UK debit cards are universally supported, which is a UKGC requirement for licensed operators serving this market. E-wallet support varies by brand — LeoVegas and Mr Green both confirm PayPal and broader e-wallet acceptance, while Dream Vegas and Genesis Casino's e-wallet ranges should be checked directly on the live site as availability can change. Mobile play across all six alternatives is supported through browser-based access without requiring a dedicated downloadable app, mirroring the mobile-optimised approach SlotsMillion itself took during its UK operation — a legacy that fits naturally given LeoVegas in particular built its brand identity around mobile-first design.

Responsible Gambling Controls

Every UKGC-licensed operator featured in this guide is required to provide a baseline set of responsible gambling tools under LCCP rules: deposit limits, self-exclusion (including integration with the national GamStop scheme), reality checks or session reminders, and access to information about problem gambling support services. Several operators go further than this baseline. Mr Green's Green Gaming tool applies behavioural analytics to flag risk patterns and offer tailored recommendations, while Videoslots' 'Take a Break' feature and layered limit-setting (deposit, wager, loss, and session limits) provide a more granular level of control than the statutory minimum. SlotsMillion's own Lock My Withdrawal feature, while no longer relevant to UK players given the market exit, remains a notable example of operator-led innovation in this space, and it's a feature worth looking for if you ever research casinos in markets where SlotsMillion remains active.

For UK players comparing operators more broadly, it's also worth reviewing how established high-street betting brands structure their responsible gambling and account systems, since many share back-end technology across multiple products. Guides covering Ladbrokes sister sites and William Hill sister sites illustrate how multi-brand operators typically structure shared self-exclusion and account linkage across their portfolios — a useful point of contrast to SLTM Ltd's single-brand model.

Why We Excluded Certain Brands

Three brands — Winoui, Mad Nix, and Wild Sultan — appear alongside SlotsMillion in the Rainmaker Network affiliate programme, and some readers may encounter them described elsewhere as sister sites. We have deliberately excluded them from this guide's sister-site listings because they are operated by The Luck Factory B.V., a Curaçao-registered company with no confirmed formal corporate tie to SLTM Ltd. Curaçao licensing also operates under a substantially different regulatory framework to the UK's, with generally less stringent player protection requirements, and none of these three brands are believed to hold current UKGC licensing. For UK players specifically, this makes them unsuitable recommendations regardless of any affiliate-programme association with SlotsMillion.

Verdict

SlotsMillion stands as a genuinely single-brand operation with no verified sister sites, a position corroborated by multiple independent operator databases and explicitly stated by other industry sister-site trackers. Its March 2023 UK market exit means the brand itself is no longer a viable option for UK players in any case, regardless of the sister-site question. For those who previously enjoyed its enormous slots catalogue, VR novelty, and Lock My Withdrawal feature, the closest match among currently active UK-licensed alternatives is Videoslots, given its similarly vast catalogue and dual UKGC/MGA licensing. Casumo and LeoVegas offer strong, well-established alternatives with excellent responsible gambling frameworks, while Mr Green stands out for its behavioural-analytics-based Green Gaming tool. Dream Vegas and Genesis Casino remain reasonable options but warrant a more cautious approach given their Medium safety ratings. As always, players should independently verify current licensing status for any operator via gamblingcommission.gov.uk before registering or depositing, and should never rely solely on third-party licence numbers or bonus terms without checking the operator's own current UK terms directly. For comparison, readers interested in how other well-known UK gambling brands structure their multi-brand networks may also find it useful to review Betfred sister sites or Coral Casino sister sites, both of which illustrate a contrasting, multi-brand operator model to SLTM Ltd's standalone approach with SlotsMillion.