Unbeatable bonuses with your first deposit
Terms & Conditions apply · Play responsibly
BCgame
Multi-Award-Winning Crypto Casino & Sportsbook with Bonuses up to $100,000
- ✓ 2 USDT free! No deposit required
- ✓ Bonus Code: cas2u2
- ✓ BCgame 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 BCgame
- ✓ Online sports betting
- ✓ Play poker online at BCgame – Online poker room
- ✓ Available in multiple languages, including English
- ✓ Tested and certified by Casino Bonus Center · Rating: 4.3/5
- ✓ 72 Game Providers: BC Originals, Belatra Games, TVbet, Live88, JILI, Habanero, NetEnt, Evolution Gaming, FC, Red Rake, Relax Gaming, Platipus, and others.
Terms & Conditions apply · Play responsibly
GambleZen Casino
Discover Nature’s Hidden Treasures with €3,625 in Your Backpack
- ✓ GambleZen Casino 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 GambleZen Casino
- ✓ Available in multiple languages, including English
- ✓ Tested and certified by Casino Bonus Center · Rating: 4.2/5
- ✓ 86 Game Providers: Platin Gaming, Ezugi, Onlyplay, OctoPlay, Fugaso, Pragmatic Play, LiveGames, XProGaming, KA Gaming, Evolution Gaming, Betsolutions, Playtech, and others.
Terms & Conditions apply · Play responsibly
BetHog
Unlock a $5,000 Bonus, Weekly Lotteries, and the World's First AI Blackjack Dealer
- ✓ 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
Ybets
Taste the Victory with Casino, Sportsbook, Live Betting, and Daily Chances to Win up to 5 BTC
- ✓ 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 Ybets
- ✓ Online sports betting
- ✓ Available in multiple languages, including English
- ✓ Rating: 4.2/5
- ✓ 81 Game Providers: Igrosoft, Hacksaw Gaming, Bang Bang Games, Tom Horn, Thunderkick, 3 Oaks Gaming, Jelly Entertainment, NolimitCity, Amatic, Casino Technology, Booming Games, AvatarUX, 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.
Terms & Conditions apply · Play responsibly
ZotaBet
Dive into a world of unlimited VIP betting with a €6,000 Welcome Bonus + 100 Free Spins
- ✓ Bonus Code: WELCOME
- ✓ 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 ZotaBet
- ✓ Online sports betting
- ✓ Available in multiple languages, including English
- ✓ Tested and certified by Casino Bonus Center · Rating: 4.1/5
- ✓ 132 Game Providers: ReelPlay, AceRun, Gamzix, TrueLab Games, Spribe, Bet2Tech, Playson, Four Leaf Gaming, 4ThePlayer, KA Gaming, Hölle Games, RAW iGaming, and others.
Terms & Conditions apply · Play responsibly
SnatchCasino
Where every spin combines beach leisure with gangster thrills!
- ✓ SnatchCasino 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 SnatchCasino
- ✓ Available in multiple languages, including English
- ✓ 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.
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.
