3-5 business days (card/bank);
£10-£20 GBP equivalent
500+
35x-40x bonus amount
Curacao eGaming
2016
18+ | T&Cs Apply | BeGambleAware.org
This report examines the corporate network behind Monster Casino sister sites, a gambling brand operated by ProgressPlay Limited. Our investigation focuses on ownership transparency, licensing validity, regulatory compliance history, and operational patterns across the network. The findings reveal a UKGC-licensed operator with documented regulatory failings that players must weigh against the protections afforded by Tier-1 licensing.
When investigating gambling operations, the first question is always: Who profits when you lose? For Monster Casino sister sites, the trail leads to ProgressPlay Limited, a Cyprus-registered entity that has operated since 2012.
We accessed corporate registries and found ProgressPlay Limited maintains a physical office address in Limassol, Cyprus. Cyprus serves as the corporate headquarters, but ProgressPlay’s UK-facing operations are fully regulated by the UK Gambling Commission under Account #39335. This dual structure is common among international gambling operators: corporate registration in a tax-efficient EU jurisdiction, operational licensing in target markets.
The UKGC license fundamentally changes the risk profile compared to purely offshore operators. UK licensing requires substantial capital reserves, segregated player funds, mandatory responsible gambling tools, and access to independent dispute resolution through IBAS (Independent Betting Adjudication Service). Players at Monster Casino sister sites operating under UKGC authority receive genuine regulatory protection—though as we’ll examine, ProgressPlay’s compliance record raises concerns about how that protection functions in practice.
ProgressPlay does not operate Monster Casino sister sites in isolation. Our investigation identified approximately 130+ sister sites running on the same platform infrastructure. This includes brands like JeffBet, Betarno, Slotavia, and numerous other themed properties. Independent reviews note that these sites share:
This factory-model approach is the definition of white-label casino operation. When a single corporate entity manages 130+ gambling brands, resources become diluted. Customer support quality suffers. The focus shifts from player experience to volume-based revenue extraction. Players seeking operator networks with more focused brand portfolios should consider Genting Casino sister site alternatives under tighter operational structures.
ProgressPlay provides significantly more transparency than Curacao-only operators. The UKGC Public Register entry is accessible, corporate ownership is disclosed, and regulatory accountability exists. However, beneficial ownership details remain limited, and the sheer scale of the network creates opacity about which specific entity handles player disputes.
We conducted a forensic examination of the licensing claims made by Monster Casino sister sites. The findings confirm Tier-1 regulatory coverage with significant compliance concerns.
Monster Casino sister sites operating for UK players hold UK Gambling Commission Account #39335. This license has been active since 2017 and is verifiable through the UKGC Public Register. Clicking the license seal in the website footer links directly to the Commission’s database entry—meeting the validator link standard that offshore operators typically fail.
The UKGC license provides:
In addition to UKGC coverage, Monster Casino sister sites now hold a Malta Gaming Authority license. The MGA represents Europe’s most established gambling regulator with rigorous technical standards, RTP auditing requirements, and cross-border enforcement mechanisms. Dual Tier-1 licensing from both UKGC and MGA places ProgressPlay’s regulatory standing well above Curacao-only competitors.
Licensing alone does not guarantee ethical operation. In August 2025, the UKGC imposed a £1 million penalty on ProgressPlay Limited for serious failings in anti-money laundering (AML) controls and social responsibility obligations. This was ProgressPlay’s second major regulatory action, following a settlement with the Commission in 2022.
The 2025 enforcement action identified:
This regulatory history is critical context for any Monster Casino sister sites assessment. The UKGC license provides recourse mechanisms that Curacao operators cannot offer, but ProgressPlay has demonstrably failed to meet the standards that license requires. Players benefit from the safety net of UKGC oversight, but should understand they’re engaging with an operator whose compliance has been formally found wanting—twice. For operators with clean compliance records, Lottomart sister sites maintain UKGC licensing without documented penalty history.
Monster Casino sister sites hold genuine Tier-1 licensing from both UKGC and MGA. This places them categorically above Curacao-only operators in terms of player protection. However, the August 2025 £1 million fine demonstrates that licensing and compliance are not synonymous. ProgressPlay meets minimum regulatory thresholds while repeatedly falling short of best practice.
Corporate forensics requires looking beyond aggregate star ratings. Five-star reviews can be purchased from click farms. What matters is the pattern of substantive negative reviews and how the operator responds to criticism.
Monster Casino sister sites carry a Trustpilot rating of approximately 1.3 out of 5 stars—placing them in the lowest tier of player satisfaction. The recurring complaint categories include:
Multiple reviewers report verification processes that feel deliberately obstructive. While KYC is legally required and legitimate, the pattern of complaints suggests ProgressPlay implements verification at withdrawal rather than deposit, creating friction at the exact moment players want their funds. Document rejection rates and resubmission requests appear higher than industry norms.
Unlike most UKGC operators who absorb withdrawal costs, Monster Casino sister sites charge a £2.50 fee per withdrawal transaction. For recreational players making frequent small cashouts, this fee erodes winnings meaningfully. The practice is legal but player-unfriendly, and contributes significantly to negative sentiment.
The 130+ site network means players encounter virtually identical experiences across supposedly different brands. Customer support responses appear scripted, bonus terms are copy-pasted, and the “choice” between Monster Casino sister sites is largely illusory. This factory approach prioritises operator efficiency over player satisfaction.
Player forums frequently express frustration when they discover they have signed up for multiple Monster Casino sister sites without realizing they are the same operator. This creates issues with:
For operators with transparent network disclosure, Betfred Casino sister site options prominently list affiliated brands during registration.
Not all feedback is negative. Once verification is completed, many users report successful PayPal withdrawals within 24 hours. The complaints cluster around the verification process itself rather than post-verification payment refusal. This suggests Monster Casino sister sites do pay verified players—the friction is procedural rather than fraudulent.
A 1.3/5 Trustpilot rating represents genuine player dissatisfaction. The combination of withdrawal fees, aggressive KYC, and generic experiences creates an operator that technically functions but fails to satisfy. Monster Casino sister sites are not scams, but they rank among the least player-friendly UKGC licensees.
We reconstructed the withdrawal infrastructure based on player reports and documented fee structures:
| Withdrawal Method | Advertised Time | Real-World Time (Post-Verification) | Fees | Risk Factor |
|---|---|---|---|---|
| PayPal | 24 hours | 24 hours (confirmed by user reports) | £2.50 | LOW – Fastest option with reliable processing once verified |
| E-Wallets (Skrill, Neteller) | 24 hours | 24-48 hours | £2.50 | LOW-MEDIUM – Reliable but fee reduces value |
| Debit Card | 3-5 business days | 3-5 business days | £2.50 | MEDIUM – Standard timeframe, fee applies |
| Bank Wire Transfer | 5-7 business days | 5-7 business days | £2.50 + potential bank fees | MEDIUM-HIGH – Slowest method with compounding costs |
| Cryptocurrency (Bitcoin) | Not widely offered | N/A | N/A | N/A – ProgressPlay network lags in crypto adoption |
The per-withdrawal fee deserves emphasis. A player who withdraws £50 loses 5% to fees immediately. For £20 withdrawals (common among casual players), the fee represents 12.5% of the amount. This structure discourages frequent small cashouts and encourages players to leave balances on-site longer—a deliberate design choice that benefits the operator.
First withdrawal verification at Monster Casino sister sites typically requires:
Player reports indicate verification takes 24-72 hours when documents are accepted first time. However, the complaint pattern suggests higher-than-normal rejection rates requiring resubmission. Budget 3-5 days for first withdrawal to clear all verification stages.
Monster Casino sister sites process withdrawals successfully once verification completes. The £2.50 fee and aggressive KYC procedures create unnecessary friction, but players do receive their funds. PayPal users experience the smoothest process.
UK Players: MODERATE RISK. UKGC licensing provides genuine protection including GamStop integration and IBAS dispute resolution. However, the August 2025 fine demonstrates that protection has limits when the operator’s compliance culture is deficient.
EU Players: LOWER RISK than Curacao alternatives. MGA licensing provides regulatory coverage, though enforcement mechanisms are less robust than UKGC.
Rest of World: VARIABLE. Players outside UKGC/MGA jurisdictions may be served under different license structures with reduced protections.
Does ProgressPlay meet regulatory standards? Assessment: MINIMALLY. Two significant UKGC enforcement actions in three years (2022 settlement, 2025 £1 million fine) indicate systemic compliance weaknesses. The operator maintains its license but repeatedly falls below the standards that license requires. This is not scam behaviour—it’s corporate negligence that regulators are actively penalising.
Do Monster Casino sister sites exhibit hallmark scam behaviors?
Scam Verdict: NOT A SCAM. ProgressPlay operates legitimately under Tier-1 licensing but with documented compliance failures and poor player satisfaction metrics.
Monster Casino sister sites represent a paradox: genuine regulatory protection paired with genuinely poor player experience. The UKGC and MGA licenses provide safety nets that Curacao operators cannot match, but ProgressPlay’s compliance history and 1.3/5 Trustpilot rating demonstrate that licensing alone doesn’t guarantee quality.
Risk Tier: MEDIUM (6.2/10 safety rating)
Players will receive withdrawals but will experience:
Recommendation: UK players who prioritise regulatory protection over experience quality may use Monster Casino sister sites with appropriate expectations. Players seeking premium experiences should choose UKGC operators with cleaner compliance records such as MrQ sister sites or Virgin Games sister site alternatives. The £2.50 withdrawal fee alone makes alternatives like Jackpotjoy partner sites more attractive for frequent cashout players.
ProgressPlay Limited operates legally and pays verified players, but extracts maximum value through fees, aggressive verification, and volume-focused efficiency. The 130+ Monster Casino sister sites network creates illusion of choice while delivering uniformly mediocre experiences. Two UKGC fines in three years signal an operator meeting minimum compliance thresholds while consistently falling short of best practice.
If you choose to play at Monster Casino sister sites, you’re engaging with a licensed operator whose regulatory standing is secure but whose operational quality ranks among the lowest in the UKGC ecosystem. For support with gambling-related concerns, GambleAware provides free resources and confidential advice.
Jake has been reviewing online casinos since 2021, specializing in bonus analysis and withdrawal testing. Before publishing any review, he deposits his own money to verify bonus terms, wagering requirements, and payout speeds firsthand. His testing methodology focuses on what matters most to players: Can you actually withdraw your winnings, and how long does it take? Jake has completed over 200 successful withdrawals across 45+ different casinos, documenting each one with timestamps and screenshots.
What He Verifies
