This site is not intended for players residing in Japan. It is designed for Japanese-speaking users located outside of Japan.
A trusted online casino comparison and review site for Japanese-speaking players
There's a lot of noise out there when it comes to online casino info — especially in Japanese. We started Japan Bonus because we wanted to cut through the marketing fluff. Every casino here has been tested with real money. We check licenses, try withdrawals, contact support in Japanese, and only recommend places we'd actually play at ourselves.
Editor-in-Chief / Online Casino Expert
I've been in the online casino space for over 10 years now. I know the licensing systems at MGA (Malta), Curacao, and Gibraltar inside and out, and I've personally tested and reviewed over 500 casinos. My thing is digging into license details, breaking down bonus fine print, and checking security setups. What drives me is making sure Japanese players don't get burned by shady operators — so I keep it honest, even when it means giving a casino a bad score.
Here's what we do for every single casino review. No shortcuts.
We look up the license number on the regulator's official site to make sure it's real and active
We verify SSL is working properly and that privacy policies aren't full of red flags
We put in our own money, play, then cash out — timing everything and noting any fees
We message support in Japanese and see how they respond — quality, speed, and hours
We read wagering requirements, expiry dates, game restrictions, and max cashout limits cover to cover
We put it all together and rate overall value for Japanese players on a 5-point scale
We look up every casino's license on the regulator's actual website — MGA, Curacao, Gibraltar. No license? No listing. Simple as that.
We deposit real money, play the games, request withdrawals, and contact support. We also read the full T&Cs to catch anything sneaky.
Payout times, game counts, bonus terms, support response speed — we measure it all. Our rankings come from actual data, not vibes.
Reviews don't stop after publishing. We track license changes, bonus updates, and user feedback every day to make sure nothing goes stale.
We select casinos based on valid licensing, SSL encryption, Japanese support quality, payout track record, and bonus term transparency. Every casino is hands-on tested and ranked using quantified data.
While we earn affiliate revenue, it never influences our review content or ratings. We honestly report low-scoring casinos and refuse to list problematic sites. Editorial policy and affiliate operations are completely separated.
Bonus information is automatically checked daily and updated immediately when changes are detected. Casino license status is verified monthly, and review content is revisited quarterly.
This site contains affiliate links to online casinos. If users register through these links, we may receive compensation. However, this does not affect the cost to users, nor does it influence the fairness of our reviews. Editorial policy and affiliate operations are completely separated.