Best Online Casinos in Japan – Updated May 2025
Terms & Conditions apply · Play responsibly
bitStarz
Claim up to ¥50,000 in Bonuses + 180 Free Spins!
- ✓ Japanese players are accepted
- ✓ Exclusive biggest bonuses for Japanese players
- Accepts Bitcoin and other cryptocurrencies
- ✓ Play instantly in your browser – No installation required
- ✓ Mobile-friendly games · Enjoy playing on smartphones and tablets
- Live Casino · Play against real croupiers at bitStarz
- Over $19,486,399 in Jackpots by Games Global
- Tested and certified by Casino Bonus Center · Rating: 4.6/5
- 91 Game Providers: BitStarz Originals, Slotopia, Big Time Gaming, Playson, Boomerang Studios, NetEnt, Blue Guru Games, Playtech, VIVO Gaming, Gaming Corps, Booongo, Onlyplay, and others.
Terms & Conditions apply · Play responsibly
SnatchCasino
Where every spin combines beach leisure with gangster thrills!
- ✓ 50 Free Spins · No deposit required
- Bonus Code: CBC50FS
- ✓ Japanese players are accepted
- Accepts Bitcoin and other cryptocurrencies
- ✓ Play instantly in your browser – No installation required
- ✓ Mobile-friendly games · Enjoy playing on smartphones and tablets
- Live Casino · Play against real croupiers at SnatchCasino
- ✓ Online sports betting
- Tested and certified by Casino Bonus Center · Rating: 4.1/5
- 80 Game Providers: Play n GO, Ezugi, Triple PG, OneTouch, Push Gaming, Hacksaw Gaming, Yggdrasil Gaming, Evoplay, Evolution Gaming, NetEnt, Fugaso, PG Soft, and others.
Terms & Conditions apply · Play responsibly
Zodiac Casino
80チャンスは億万長者になるために!
- ✓ Japanese players are accepted
- Accepts Bitcoin and other cryptocurrencies
- ✓ Play instantly in your browser – No installation required · Optional game downloads available
- ✓ Mobile-friendly games · Enjoy playing on smartphones and tablets
- Live Casino · Play against real croupiers at Zodiac Casino
- Over $10,808,331 in Progressive Jackpots
- Tested and certified by Casino Bonus Center · Rating: 4.6/5
- 39 Game Providers: Just for the Win, Area Vegas, SlingShot, Stormcraft, Blue Ring Studios, Snowborn Games, Triple Edge, Infinity Dragon, All For One, Ino Games, Real Dealer Studios, Barstruck, and others.
Terms & Conditions apply · Play responsibly
InterCasino
$900 welcome bonus plus 110 free spins on different games!
- ✓ Japanese players are accepted
- ✓ Play instantly in your browser – No installation required
- ✓ Mobile-friendly games · Enjoy playing on smartphones and tablets
- Live Casino · Play against real croupiers at InterCasino
- Tested and certified by Casino Bonus Center · Rating: 3.1/5
- 13 Game Providers: NetEnt, BetSoft, Games Global, NextGen Gaming, QuickSpin, Yggdrasil Gaming, IGT Interactive, Pragmatic Play, Thunderkick, Leander Games, Evolution Gaming, Play n GO, and Realistic Games
Terms & Conditions apply · Play responsibly
Casumo
Amazing bonuses and daily video slots tournaments!
- ✓ Japanese players are accepted
- ✓ Play instantly in your browser – No installation required
- ✓ Mobile-friendly games · Enjoy playing on smartphones and tablets
- Live Casino · Play against real croupiers at Casumo
- ✓ Online sports betting
- Tested and certified by Casino Bonus Center · Rating: 4/5
- 35 Game Providers: Merkur Gaming, IGT Interactive, Red Tiger, Thunderkick, Games Global, Playtech, ELK Studios, Slingo Originals, NYX Interactive, Bally Interactive, QuickSpin, Fortune Factory, and others.
Significant Terms: New Players Only. Wager from real balance first. 50X wager the bonus. Contribution varies per game. selected games only. Wager calculated on bonus bets only. Bonus valid 30 days / Free spins valid 7 days from receipt. Max conversion: 3x the bonus amount or from free spins: $20. Withdrawal requests void all active/pending bonuses. Excluded Skrill deposits. · Terms & Conditions apply · Play responsibly
Hippozino
Claim 55 free spins on signup plus a welcome bonus up to $200
- ✓ 55 Free Spins · No deposit required
- ✓ Japanese players are accepted
- ✓ Play instantly in your browser – No installation required
- ✓ Mobile-friendly games · Enjoy playing on smartphones and tablets
- Live Casino · Play against real croupiers at Hippozino
- Over $19,486,399 in Jackpots by Games Global
- Tested and certified by Casino Bonus Center · Rating: 3.6/5
- 26 Game Providers: NetEnt, QuickSpin, Lightning Box, Games Global, NextGen Gaming, Playson, ReelPlay, Core Gaming, ELK Studios, Extreme Live Gaming, Games Warehouse, Games Lab, and others.
Significant Terms: Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Min. deposit: $10, max. Bonus $100. WR of 60x Bonus amount (Slots count 100% and any other game 10%) within 30 days. Max bet is 10% (min $0.10) of the Bonus amount or $5 (lowest amount applies). Bonus must be claimed before using deposited funds. Welcome Bonus can only be claimed once every 72 hours across all associated Casinos. · Terms & Conditions apply · Play responsibly
Mega Casino
Mega thrills and mega wins! 125 free spins or up to $100 bonus, your choice!
- Bonus Code: 125MEGA
- ✓ Japanese players are accepted
- ✓ Play instantly in your browser – No installation required
- ✓ Mobile-friendly games · Enjoy playing on smartphones and tablets
- Live Casino · Play against real croupiers at Mega Casino
- Tested and certified by Casino Bonus Center · Rating: 4.1/5
- 63 Game Providers: Gaming Corps, iSoftBet, Yggdrasil Gaming, GVG Green Valley Games, NetEnt, Spearhead Studios, Wazdan, Stormcraft, Thunderkick, Gamomat, Zitro, Eyecon, and others.
Top 10 Online Casinos in Japan
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 May 2025. bitStarz, Zodiac Casino, 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.
Browse our expert-ranked list below and claim your exclusive welcome bonus today!
| Online Casinos Japan | Welcome Bonus |
|---|---|
bitStarz Claim up to ¥50,000 in Bonuses | Bonus of 100% up to ¥10,000 + 180 Free Spins |
Zodiac Casino 80チャンスは億万長者になるために! | 80 Free Spins |
SnatchCasino 50 Free Spins – Beach Vibes, Gangster Style | Bonus of 200% up to €1,000 + 100 Free Spins |
Casumo Daily slots tournaments | Bonus of 100% up to $400 |
InterCasino $900 Welcome bonus + 110 extra spins! | Bonus of 100% up to $300 + 100 Free Spins |
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 |
betsafe The best games, all in a safe place | Bonus of 100% up to $200 + 200 Free Spins |
Grand Mondial ジャックポットが当たる150回のチャンスをゲット | 150 Free Spins |
EnergyCasino 30 free spins plus $400 in bonuses! | Bonus of 100% up to $200 |
* 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.
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Explore Online Casinos for Japanese players
Dive into our carefully selected library featuring 142 online casinos available in Japan. Each review is crafted with expertise, offering insights into game quality, bonuses and promotions, casino reliability, and user experience. Make an informed choice and play your favorite casino games, either for free or with real money stakes.
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May 2025's Featured Casinos in Japan
Discover top-rated online casinos with the best offers this month. Our curated list ensures you access the most generous promotions and trusted casinos. From exclusive welcome packages to exciting no deposit offers, start your gaming journey with the finest online casino bonuses available in Japan.
Top-Rated Casino Bonuses in Japan
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