Top casinos with bonuses on second deposit · Page 12 of 15
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WinUnique Casino
25 Free Spins + $2,000 in Bonuses + 100 Free Spins on first deposit!
- ✓ 25 Free Spins · No deposit required
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- ✓ Japanese players are accepted
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- ✓ Mobile-friendly games · Enjoy playing on smartphones and tablets
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- ✓ Available in multiple languages, including English
- ✓ Rating: 3.1/5
- ✓ 42 Game Providers: Playson, LuckyStreak, Red Rake, Triple Cherry, Kalamba Games, Arrows Edge, Reevo, Belatra Games, NetEnt, Endorphina, Evolution Gaming, Tom Horn, and others.
Terms & Conditions apply · Play responsibly
WinMaChance
Welcome Bonus Package Up to $2,500 – Start Winning Today!
- ✓ 10 Free Spins · No deposit required
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- ✓ Available in multiple languages, including English
- ✓ Rating: 3.1/5
- ✓ 42 Game Providers: Fugaso, Evolution Gaming, Rival, Kalamba Games, Playson, Reevo, Gaming Corps, Pragmatic Play, Triple Cherry, Belatra Games, Caleta, StakeLogic, and others.
Terms & Conditions apply · Play responsibly
Casino Extreme
Up to $5,000 Bonus with your first deposit · $150 Free Sign-Up Bonus!
- ✓ $150 free! No deposit required
- ✓ Bonus Code: KINGS150
- ✓ Japanese players are accepted
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- ✓ Tested and certified by Casino Bonus Center · Rating: 3.1/5
- ✓ Games Provider: SpinLogic
Terms & Conditions apply · Play responsibly
PlayRegal
A generous $3,000 welcome package + 100 Free spins
- ✓ Japanese players are accepted
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- ✓ Available in multiple languages, including English
- ✓ Rating: 3.1/5
- ✓ 42 Game Providers: Booming Games, NetEnt, Gaming Corps, Games Global, Booongo, Fugaso, Platipus, Wazdan, Eurasian Gaming, Arrows Edge, Play n GO, RubyPlay, and others.
Terms & Conditions apply · Play responsibly
WinVegasPlus
Over 700 Games with Bonuses on Every Deposit!
- ✓ Japanese players are accepted
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- ✓ Mobile-friendly games · Enjoy playing on smartphones and tablets
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- ✓ Available in multiple languages, including English
- ✓ Rating: 3.1/5
- ✓ 42 Game Providers: Platipus, Mancala, Merkur Gaming, Arcadem, Pragmatic Play, Aviatrix, LuckyStreak, Spinomenal, SmartSoft Gaming, Play n GO, Wazdan, Kalamba Games, and others.
Terms & Conditions apply · Play responsibly
Phoenician Casino
Unlock a $1,200 Triple Bonus Treasure and Begin Your Expedition
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- ✗ Not available on mobile devices
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- ✓ Tested and certified by Casino Bonus Center · Rating: 3.1/5
- ✓ 39 Game Providers: Almond Gaming, PearFiction, Blue Ring Studios, Fortune Factory, Rabcat, Crazy Tooth, Switch Studios, Gong Gaming, Buck Stakes, Oros Gaming, Area Vegas, Flip Five Gaming, and others.
Terms & Conditions apply · Play responsibly
Europa777
Join Today – No-Deposit Free Spins and $8,000 in Bonuses Await
- ✓ 25 Free Spins · No deposit required
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- ✓ Bonus Code: BONUS1
- ✓ Europa777 offers exclusive bonuses for CasinoBonusCenter visitors
- ✓ 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 Europa777
- ✓ Available in multiple languages, including English
- ✓ Rating: 3/5
- ✓ 114 Game Providers: Fugaso, ReelPlay, Kalamba Games, Hölle Games, Kajot Games, Concept Gaming, Lucksome, Interjuegos, Spinomenal, Felix Gaming, ZeusPlay, Super Spade Games, and others.
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. 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.
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
- JackpotCity Casino – Holds the second spot in popularity with Japanese players for December 2025. See Current Bonuses at JackpotCity Casino
- 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 |
|---|---|
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 Casino Fun, Beach Vibes, Gangster Style | Bonus of 225% up to $1,000 + 100 Free Spins |
Casumo Daily slots tournaments | Bonus of 100% up to $400 |
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 |
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 |
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.
