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 directly in your browser – No software installation needed
- ✓ Downloadable games are also available
- ✓ Games for mobile devices · Play casino games on your smartphone or tablet
- Live Casino · Play against real croupiers at 888Casino
- ✓ Online sports betting
- ✓ Play poker online at 888Casino – Online poker room
- Tested and certified by Casino Bonus Center · Rating: 4.9/5
- 26 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 directly in your browser – No software installation needed
- ✓ Games for mobile devices · Play casino games on your smartphone or tablet
- Live Casino · Play against real croupiers at Betsson
- ✓ Online sports betting
- ✓ Play poker online at Betsson – Online poker room
- 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 directly in your browser – No software installation needed
- ✓ Downloadable games are also available
- ✓ Games for mobile devices · Play casino games on your smartphone or tablet
- Live Casino · Play against real croupiers at betsafe
- ✓ Online sports betting
- ✓ Play poker online at betsafe – Online poker room
- 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 directly in your browser – No software installation needed
- ✓ Games for mobile devices · Play casino games on your smartphone or tablet
- Live Casino · Play against real croupiers at NordicBet
- ✓ Online sports betting
- ✓ Play poker online at NordicBet – Online poker room
- 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
KikoBet
Unlock a €450 Welcome Package – Your Gateway to Premier Casino and Sports Betting Thrills!
- ✓ Japanese players are accepted
- Accepts Bitcoin and other cryptocurrencies
- ✓ Play directly in your browser – No software installation needed
- ✓ Games for mobile devices · Play casino games on your smartphone or tablet
- Live Casino · Play against real croupiers at KikoBet
- ✓ Online sports betting
- 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!
- ✓ Japanese players are accepted
- ✓ Play directly in your browser – No software installation needed
- ✓ Games for mobile devices · Play casino games on your smartphone or tablet
- Live Casino · Play against real croupiers at Rollino
- ✓ Online sports betting
- 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.
Terms & Conditions apply · Play responsibly
Guts
A $100 bonus plus a guaranteed reward on the "Game of Guts"
- ✓ Japanese players are accepted
- ✓ Play directly in your browser – No software installation needed
- ✓ Games for mobile devices · Play casino games on your smartphone or tablet
- Live Casino · Play against real croupiers at Guts
- ✓ Online sports betting
- ✓ Play poker online at Guts – Online poker room
- Over $18,024,212 in Jackpots by Games Global
- Tested and certified by Casino Bonus Center · Rating: 4.1/5
- 44 Game Providers: StakeLogic, Yggdrasil Gaming, Playson, Novomatic, Red Tiger, Blueprint Gaming, Push Gaming, Relax Gaming, Kalamba Games, Thunderkick, Gaming Realms, Wazdan, and others.
Top 10 Online Casinos in Japan (April 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 April 2025. bitStarz, Zodiac Casino, and King Billy Casino 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 | Bonus of 100% up to ¥10,000 and 180 free spins |
Zodiac Casino | 80 free spins |
King Billy Casino | Bonus of 100% up to $500 and 100 free spins |
SnatchCasino | Bonus of 200% up to €1,000 and 100 free spins |
Casumo | Bonus of 100% up to $400 |
InterCasino | Bonus of 100% up to $300 and 100 free spins |
888Casino | Bonus of 100% up to $1,000 |
Betsson | Bonus of 100% up to $100 and 50 free spins |
betsafe | Bonus of 100% up to $200 and 200 free spins |
Grand Mondial | 150 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.
