Sportsbook reviews: Free bets and betting bonuses
Terms & Conditions apply · Play responsibly
888Casino
Get up to $1,000 in bonus with your first deposit
- ✓ 1 Free Spin · No deposit required
- ✓ Japanese players are accepted
- ✓ 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 888Casino
- ✓ Online sports betting
- ✓ Play poker online at 888Casino – Online poker room
- ✓ Available in multiple languages, including English
- ✓ Tested and certified by Casino Bonus Center · Rating: 4.9/5
- ✓ 27 Game Providers: Playtech, Section8, NetEnt, Williams Interactive, Big Time Gaming, Play n GO, Wizard Games, Electracade, GTECH G2, Amaya Cryptologic, GTS, Pragmatic Play, and others.
Terms & Conditions apply · Play responsibly
Betsson
Sports betting, online casino, poker, scratch cards and more!
- ✓ 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 Betsson
- ✓ Online sports betting
- ✓ Play poker online at Betsson – Online poker room
- ✓ Available in multiple languages, including English
- ✓ Tested and certified by Casino Bonus Center · Rating: 4.8/5
- ✓ 95 Game Providers: Light and Wonder, Playson, Blueprint Gaming, Old Skool, Slingo Originals, Gamomat, Leander Games, High 5, Genesis, Side City Studios, iSoftBet, RELIGA, and others.
Terms & Conditions apply · Play responsibly
betsafe
Experience the thrill of sports betting and the excitement of the best casino games
- ✓ Japanese players are accepted
- ✓ 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 betsafe
- ✓ Online sports betting
- ✓ Play poker online at betsafe – Online poker room
- ✓ Available in multiple languages, including English
- ✓ Tested and certified by Casino Bonus Center · Rating: 4.5/5
- ✓ 138 Game Providers: Relax Gaming, TouchStone Games, High 5, Fortune Factory, Playtech, Bad Dingo, WinFast Games, Wizard Games, Skywind, Print Studios, Apollo Games, MahiGaming, and others.
Terms & Conditions apply · Play responsibly
NordicBet
Experience the ultimate Nordic casino and sports betting!
- ✓ 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 NordicBet
- ✓ Online sports betting
- ✓ Play poker online at NordicBet – Online poker room
- ✓ NordicBet is available in 3 languages: Danish, English, and Swedish
- ✓ Tested and certified by Casino Bonus Center · Rating: 4.3/5
- ✓ 143 Game Providers: PG Soft, Playtech, Slotmill, Pulse 8 Studios, Betradar, Switch Studios, Thunderkick, Apollo Games, Rabcat, Endorphina, TouchStone Games, Silverback, and others.
Terms & Conditions apply · Play responsibly
BetHog
Unlock a $5,000 Bonus, Weekly Lotteries, and Original Games at a Trusted Crypto Casino
- ✓ 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 BetHog
- ✓ Online sports betting
- ✓ Available in multiple languages, including English
- ✓ Tested and certified by Casino Bonus Center · Rating: 4.2/5
- ✓ 28 Game Providers: Slotmill, Evolution Gaming, Big Time Gaming, GameArt, OneTouch, VoltEnt, PG Soft, Booming Games, NowNow, NetEnt, BetHog Originals, TrueLab Games, and others.
Terms & Conditions apply · Play responsibly
KikoBet
Unlock a €500 Welcome Package – Your Gateway to Premier Casino and Sports Betting Thrills!
- ✓ KikoBet 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 KikoBet
- ✓ Online sports betting
- ✓ Available in multiple languages, including English
- ✓ Tested and certified by Casino Bonus Center · Rating: 4.1/5
- ✓ 26 Game Providers: Pragmatic Play, Spribe, Vibra Gaming, Salsa Technology, Evolution Gaming, iSoftBet, Yggdrasil Gaming, Casino Technology, Playtech, Gamzix, Play n GO, Foxium, and others.
Terms & Conditions apply · Play responsibly
Rollino
Enter the Fairground with an Exclusive Bonus up to $6,000!
- ✓ Rollino offers exclusive bonuses for CasinoBonusCenter visitors
- ✓ 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 Rollino
- ✓ Online sports betting
- ✓ Available in multiple languages, including English
- ✓ Tested and certified by Casino Bonus Center · Rating: 4.1/5
- ✓ 85 Game Providers: 1X2gaming, Platipus, Red Rake, Spinmatic, VIVO Gaming, High 5, Amatic, Pragmatic Play, Playbro, ThunderSpin, Barbara Bang, Thunderkick, and others.
Top 10 Online Casino Bonuses in Japan (June 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 June 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 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 $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 |
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 30 free spins plus ¥50,000! | Bonus of 100% up to ¥25,000 |
* 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.
