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This list includes the number of casinos powered by each provider, and the number of online casinos where you can play for free. The list is sorted by number of casinos.
* Note: Some casino software providers have restrictions on where their games can be offered.
Top 10 Online Casino Bonuses in Japan (September 2025)
Expert-Rated Real Money Casinos with Top Bonuses
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| Online Casinos Japan | Welcome Bonus |
|---|---|
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EnergyCasino Triple-Powered Welcome Bonus | Bonus of 100% up to ¥25,000 + 400 Free Spins |
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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.
