A Japan-targeted offshore casino with a genuine unresolved licensing discrepancy and documented unresolved player complaints
Not available lawfully hereIs Casino Secret legal in Japan?
No. Real-money gambling is banned in Japan. Under the Penal Code gambling offences and the revised Basic Law on Measures against Addiction, in force since the revised law took effect in September 2025, Casino Secret cannot lawfully offer you a welcome bonus here, and you cannot lawfully claim one.
Only public pari-mutuel sports and lotteries are legal in Japan; offshore online casinos are not. Online casino-related arrests hit a record 196 in 2025, up more than 38% on 2024. The revised law also criminalises intermediary 'reach' sites and social media promotion that funnel players to offshore casinos, and the first arrests over an affiliate site followed in September 2025. source
Any Casino Secret bonus you see advertised for Japan is offered from an offshore site operating against local law. Your payments can be blocked, your account can vanish with a mirror domain, and no Japan regulator can help you recover funds. We therefore show no offer and no sign-up link on this page. See every licensed betting site in Japan →
Pros
- A genuine, real-standout first-deposit cashback with no wagering requirement on losses
- Large operator with substantial estimated revenue
- High 8.3 casino.guru Safety Index headline score
Cons
- Genuine, unresolved licensing discrepancy - Curacao (casino.guru) vs. Malta (AskGamblers) - could not be independently reconciled
- Documented unresolved complaint: a $10,400 balance withheld over an unsubstantiated 'scripted play' allegation, casino uncooperative
- AskGamblers complaint describes stall tactics after a $55,000 win, with the winnings ultimately lost
- Withdrawal-limit dispute - applied more broadly than the casino's own T&Cs describe, per a documented complaint
- Illegal/unregulated for Japan-based players - no licensed Japanese online casino framework exists
Our verdict
Casino Secret is a large offshore casino, owned by Niollo BV with estimated annual revenues over $100 million, offering new players a genuinely sizeable first-deposit cashback (up to roughly $1,000-1,500) with no wagering requirement on losses, plus up to 100-1,000 free spins - a real standout offer. However, we found a genuine, unresolved licensing discrepancy worth reporting directly: casino.guru states it holds a Curacao Gaming Control Board licence, while AskGamblers states it is regulated by the Malta Gaming Authority - we could not independently reconcile which is currently accurate. casino.guru gives it a High 8.3 Safety Index but also documents 4 complaints (4,553 black points) and a Mixed user-feedback score from a thin sample of just 17 users. One specific, unresolved complaint describes a Japanese player's account being closed over an unsubstantiated 'scripted play' allegation, with a roughly $10,400 balance never returned and the casino uncooperative during casino.guru's complaint-resolution process. Separately, AskGamblers documents a complaint describing stall tactics after a $55,000 win (with the winnings ultimately lost) and a dispute over withdrawal limits applied more broadly than the casino's own Terms and Conditions describe. Casino Secret is illegal/unregulated for Japan-based players, since Japan has no licensed online casino framework of its own. A large operator with a genuinely attractive cashback offer, but the licensing discrepancy and documented unresolved complaints are serious concerns worth weighing carefully.
How we rated it
Bonuses & value (18%)7.5
A genuine, real standout: a first-deposit cashback (up to ~$1,000-1,500) with NO wagering requirement on losses, paid on net losses, plus up to 100-1,000 free spins.
Casino (36%)6.5
A large offshore casino operator (Niollo BV) with estimated revenues over $100 million, offering a genuinely sizeable first-deposit cashback offer.
Customer support (18%)4
casino.guru's own Complaints Team found the casino uncooperative and unable to substantiate its allegations in a specific, unresolved case; user feedback is a thin, Mixed sample (17 users).
Trust & licensing (27%)3.5
We found a genuine, unresolved licensing discrepancy - casino.guru cites Curacao, AskGamblers cites Malta - which we report directly rather than resolve without evidence. casino.guru also documents 4 complaints (4,553 black points), including one unresolved case where a $10,400 balance was withheld over an unsubstantiated 'scripted play' allegation, with the casino uncooperative during the complaint process. AskGamblers separately documents a $55,000 stall-tactics complaint and a withdrawal-limit dispute. Illegal/unregulated in Japan itself, per our own research.
Quick facts
| Owner | Niollo BV (~$100m+ estimated annual revenue) |
| Licensing discrepancy | casino.guru cites Curacao; AskGamblers cites Malta - unresolved, reported directly |
| casino.guru Safety Index | 8.3/10 (High), but 4 complaints / 4,553 black points, Mixed feedback (17 users) |
| Documented unresolved complaint | $10,400 balance withheld over unsubstantiated 'scripted play' claim; casino uncooperative |
| AskGamblers complaint | $55,000 win lost after stall tactics ('gamechecks'); withdrawal-limit dispute |
| Japan legal status | Illegal/unregulated - offshore operator, no Japanese licensing framework exists |
How we verified this
We specifically flag a genuine, unresolved licensing discrepancy: casino.guru states a Curacao Gaming Control Board licence, while AskGamblers states Malta Gaming Authority regulation - we could not independently confirm which is currently accurate and report the disagreement directly rather than assert either as settled fact. The documented complaints (the unresolved $10,400 account-closure case on casino.guru, and the $55,000 stall-tactics/withdrawal-limit complaints on AskGamblers) are drawn directly from each platform's own published complaint records, not operator marketing. The Japan legal status (illegal/unregulated offshore operator) matches our own bonuses.json entry for this brand.
Where Casino Secret is licensed
Casino Secret appears on the official register in 1 countries. Highlighted countries have a full local review — pick yours for its welcome bonus and licence details.
Asia (1)
About Casino Secret
Casino Secret is a large offshore casino (Niollo BV) targeting Japan-based players, illegal/unregulated there since Japan has no licensed online casino framework. We report a genuine, unresolved licensing discrepancy (Curacao vs. Malta) and documented unresolved complaints - including a withheld $10,400 balance and a $55,000 stall-tactics complaint - directly rather than present it as trouble-free.
Casino Secret FAQ
Is Casino Secret licensed?
We found a genuine, unresolved discrepancy: casino.guru states a Curacao Gaming Control Board licence, while AskGamblers states Malta Gaming Authority regulation. We could not independently confirm which is currently accurate.
Is Casino Secret legal in Japan?
No - it is an offshore operator targeting Japan-based players, but Japan has no licensed online casino framework, making it illegal/unregulated there.
Does Casino Secret have complaints?
Yes - casino.guru documents 4 complaints (4,553 black points), including one unresolved case where a $10,400 balance was withheld over an unsubstantiated 'scripted play' claim. AskGamblers separately documents a complaint about a $55,000 win lost to stall tactics, and a withdrawal-limit dispute.
What is the Casino Secret welcome bonus?
A genuinely notable first-deposit cashback (up to roughly $1,000-1,500) with no wagering requirement on losses, plus up to 100-1,000 free spins.
Who owns Casino Secret?
Niollo BV, with estimated annual revenues over $100 million.