Latest Casino Bonuses for July 2025

William Hill Casino & Sports

Iconic Brand with Trusted Casino Games & Sports Betting

Welcome offer:

100% Bonus up to

$300

Bonus on first deposit

Significant Terms: 18+ · Opt in required · Promotion can only be claimed once per account · Max bonus $300 · Min buy in $10 · 25x wagering applies · Terms & Conditions apply  ·  Play responsibly

William Hill Casino & Sports

Iconic Brand with Trusted Casino Games & Sports Betting

July 15

  • 100% Bonus up to $300 with your first deposit (New customers)
  • Japanese players are accepted
  • Play instantly in your browser – No installation required
  • Mobile-friendly games · Enjoy playing on smartphones and tablets
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  • Online sports betting
  • Play poker online at William Hill Casino & Sports – Online poker room
  • Over $12,465,515 in Jackpots by Games Global
  • Available in multiple languages, including English
  • Tested and certified by Casino Bonus Center · Rating: 4.1/5
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ReloadBet

Online Sports and Casino Betting · $1,000 Welcome Bonus!

Welcome offer:

100% Bonus up to

$300

Bonus on first deposit

Terms & Conditions apply ·  Play responsibly

ReloadBet

Online Sports and Casino Betting · $1,000 Welcome Bonus!

July 15

  • 100% Bonus up to $300 with your first deposit (New customers)
  • Bonus available on your second and third deposit
  • ReloadBet 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
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  • Online sports betting
  • Over $12,465,515 in Jackpots by Games Global
  • Available in multiple languages, including English
  • Tested and certified by Casino Bonus Center · Rating: 3.9/5
  • Popularity: This offer has been claimed by 323 visitors so far this month.
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Red Stag Casino

Catch the Winning Spirit with Daily Bitcoin Offers and a $2,500 Welcome Bonus!

Free Bonus:

$10

No deposit required

Terms & Conditions apply ·  Play responsibly

Explore bonuses at Red Stag Casino

Red Stag Casino

Catch the Winning Spirit with Daily Bitcoin Offers and a $2,500 Welcome Bonus!

July 11

  • $10 free! No deposit required
  • Bonus Code: TENNER
  • 275% Bonus up to $550 + 100 Free Spins with your first deposit (New customers)
  • Bonus available on your second and third deposit
  • Red Stag 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
  • Red Stag Casino is available in English
  • Tested and certified by Casino Bonus Center · Rating: 3.1/5
  • Popularity: This offer has been claimed by 84 visitors so far this month.
  • Game Providers: DragonGaming, Arrows Edge, and WGS Technology

SlottoJAM

Exclusive $500 Bonus Pack · Daily Rewards & VIP Program

Welcome offer:

200% Bonus up to

$200

Bonus on first deposit

Terms & Conditions apply ·  Play responsibly

SlottoJAM

Exclusive $500 Bonus Pack · Daily Rewards & VIP Program

July 5

  • 200% Bonus up to $200 with your first deposit (New customers)
  • Bonus available on your second purchase
  • SlottoJAM 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
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  • Online sports betting
  • Over $12,465,515 in Jackpots by Games Global
  • Available in multiple languages, including English
  • Tested and certified by Casino Bonus Center · Rating: 4.1/5
  • Popularity: This offer has been claimed by 112 visitors so far this month.
  • 99 Game Providers: Yggdrasil Gaming, Neko Games, Push Gaming, Casino Technology, OnAir Entertainment, Ortiz, Salsa Technology, Swish Games, King Show Games, High Limit Studio, Fortune Factory, Amatic, and others.

Sloto Cash

Start with $31 Free – Then Unlock Big Bonuses & Monthly Treats!

Free Bonus:

$31

No deposit required

Terms & Conditions apply ·  Play responsibly

Explore bonuses at Sloto Cash

Sloto Cash

Start with $31 Free – Then Unlock Big Bonuses & Monthly Treats!

July 3

  • $31 free! No deposit required
  • Bonus Code: 31FREE
  • 200% Bonus up to $2,000 + 100 Free Spins with your first deposit (New customers)
  • Bonus Code: SLOTO1MATCH
  • Bonus available on your second and third deposit
  • Sloto Cash offers exclusive bonuses for CasinoBonusCenter visitors
  • Japanese players are accepted
  • Biggest jackpot available: $1,684,882.83 | Game: Aztec's Millions
  • Accepts Bitcoin and other cryptocurrencies
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  • Mobile-friendly games · Enjoy playing on smartphones and tablets
  • Live Casino · Play against real croupiers at Sloto Cash
  • Sloto Cash is available in English
  • Tested and certified by Casino Bonus Center · Rating: 3.4/5
  • Popularity: This offer has been claimed by 57 visitors so far this month.
  • Game Providers: SpinLogic and Visionary iGaming

Merlin Casino

Feel the Spell of Big Wins with Wager-Free Bonuses, Free Spins & Daily Promotions

Sign-up Bonus:

20

Free Spins

No deposit required

Terms & Conditions apply ·  Play responsibly

Merlin Casino

Feel the Spell of Big Wins with Wager-Free Bonuses, Free Spins & Daily Promotions

June 17

  • 20 Free Spins · No deposit required
  • Bonus Code: SPINS20
  • 120% Bonus up to $240 + 100 Free Spins with your first deposit (New customers)
  • Bonus available on your second and third deposit
  • Merlin 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 Merlin Casino
  • Online sports betting
  • Available in multiple languages, including English
  • Rating: 3.9/5
  • Popularity: This offer has been claimed by 109 visitors so far this month.
  • 125 Game Providers: Wizard Games, Peter and Sons, Betsolutions, Aviatrix, Yggdrasil Gaming, Eurasian Gaming, Nemesis, SpinLogic, Red Rake, Mr Slotty, UpGaming, Fazi Interactive, and others.

BetHog

Unlock a $5,000 Bonus, Weekly Lotteries, and Original Games at a Trusted Crypto Casino

Welcome offer:

100% Bonus up to

$5,000

Bonus on first deposit

Terms & Conditions apply ·  Play responsibly

BetHog

Unlock a $5,000 Bonus, Weekly Lotteries, and Original Games at a Trusted Crypto Casino

June 12

  • 100% Bonus up to $5,000 with your first deposit (New customers)
  • 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.

Top 10 Online Casino Bonuses in Japan (July 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 July 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 JapanWelcome Bonus

Claim up to ¥50,000 in Bonuses

Bonus of 100% up to ¥10,000 + 180 Free Spins

80チャンスは億万長者になるために!

80 Free Spins

Casino Fun, Beach Vibes, Gangster Style

Bonus of 225% up to $1,000 + 100 Free Spins

Daily slots tournaments

Bonus of 100% up to $400

$900 Welcome bonus + 110 extra spins!

Bonus of 100% up to $300 + 100 Free Spins

Get a Free Spin on the Wish Wheel

Bonus of 100% up to $1,000

Sportsbook, casino, live casino

Bonus of 100% up to $100 + 50 Free Spins

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

The best games, all in a safe place

Bonus of 100% up to $200 + 200 Free Spins

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.