Live casinos: Play against real croupiers! · Page 3 of 19
Terms & Conditions apply · Play responsibly
Rabona
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KikoBet
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LSbet
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Rollino
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Top 10 Online Casino Bonuses in Japan (December 2025)
Expert-Rated Real Money Casinos with Top Bonuses
Looking for the best online casinos in Japan? Our expert team has tested and reviewed hundreds of real money gambling sites to bring you the top 10 choices for December 2025. Zodiac Casino, BitStarz, and SnatchCasino lead our rankings, standing out for their extensive selection of high-paying slots, immersive live dealer tables, exclusive bonuses, and lightning-fast payouts.
Most Popular Online Casinos in Japan
Curious which brands stand out among Japanese players right now? Here are the top 3 most popular online casinos in the last 30 days—each trusted for their excellent bonuses, diverse games, and reliable payouts:
- Gday Casino – Ranked as the #1 most popular online casino among Japanese players this month. Check why Gday Casino is so popular in Japan
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- MrGreen – Currently ranked #3 among Japan’s most played online casinos. View Available Promotions at MrGreen
Browse our expert-ranked list below and claim your exclusive welcome bonuses today!
| Online Casinos Japan | Welcome Bonus |
|---|---|
Zodiac Casino 80チャンスは億万長者になるために! | 80 Free Spins |
BitStarz Claim up to ¥50,000 in Bonuses | Bonus of 100% up to ¥10,000 + 180 Free Spins |
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InterCasino 50 Free Spins — No deposit required | Bonus of 100% up to $500 |
888Casino Get a Free Spin on the Wish Wheel | Bonus of 100% up to $1,000 |
Betsson Sportsbook, casino, live casino | Bonus of 100% up to $100 + 50 Free Spins |
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betsafe The best games, all in a safe place | Bonus of 100% up to $200 + 200 Free Spins |
EnergyCasino Triple-Powered Welcome Bonus | Bonus of 100% up to ¥25,000 + 400 Free Spins |
* Terms & Conditions Apply · Play responsibly
With nearly two decades of experience in the industry, CasinoBonusCenter.com has been analyzing and comparing online casinos since 2006. Our dedicated team of professionals has handpicked the most trusted casinos for Japanese players to ensure you get the biggest sign-up bonuses, top-tier games, and the most rewarding loyalty programs.
