Most Popular Online Casinos in August
Terms & Conditions apply · Play responsibly
GambleZen Casino
Discover Nature’s Hidden Treasures with €3,625 in Your Backpack
- ✓ 50 Free Spins · No deposit required
- ✓ Bonus Code: GZ50
- ✓ Exclusive No-deposit Bonus – Available in Bulgaria and Selected Countries
- ✓ GambleZen Casino offers exclusive bonuses for CasinoBonusCenter visitors
- ✓ Bulgarian 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
Miami Club Casino
Claim 20 free spins, plus a €4,000 bonus on your first deposit!
- ✓ 20 Free Spins · No deposit required
- ✓ Miami Club Casino offers exclusive bonuses for CasinoBonusCenter visitors
- ✓ Bulgarian players are accepted
- ✓ Accepts Bitcoin and other cryptocurrencies
- ✓ Play instantly in your browser – No installation required · Optional game downloads available
- ✓ Mobile-friendly games · Enjoy playing on smartphones and tablets
- ✓ Miami Club Casino is available in English
- ✓ Tested and certified by Casino Bonus Center · Rating: 3.1/5
- ✓ Game Providers: WGS Technology and DragonGaming
Terms & Conditions apply · Play responsibly
KingSpin Casino
Join the Boss’s Inner Circle with a Tripled Starting Balance!
- ✓ Bulgarian players are accepted
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- ✓ Available in multiple languages, including English
- ✓ Rating: 3.8/5
- ✓ 43 Game Providers: Gamomat, BF Games, StakeLogic, BRAGG, Relax Gaming, Leap Gaming, Red Rake, Blue Guru Games, ReelPlay, Skywind, Fantasma, Swintt, and others.
Terms & Conditions apply · Play responsibly
Luxury Casino
Receive Exclusive Bonuses up to €1,000 on your first five deposits!
- ✓ Bulgarian players are accepted
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- ✓ 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 Luxury Casino
- ✓ Over €2,160,004 in Progressive Jackpots
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- ✓ Tested and certified by Casino Bonus Center · Rating: 4.2/5
- ✓ 39 Game Providers: Infinity Dragon, Evolution Gaming, Real Dealer Studios, Stormcraft, Area Vegas, OnAir Entertainment, Alchemy Gaming, Gold Coin Studios, Neon Valley, Oros Gaming, Half Pixel, Almond Gaming, and others.
Terms & Conditions apply · Play responsibly
Slots Capital
Get €100 Free with Your First €25 Deposit!
- ✓ 15 Free Spins · No deposit required
- ✓ Bonus Code: CAPITAL15SPINS
- ✓ Bonus Code: FIRST100FREE
- ✓ Bulgarian players are accepted
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- ✓ Play instantly in your browser – No installation required · Optional game downloads available
- ✓ Mobile-friendly games · Enjoy playing on smartphones and tablets
- ✓ Slots Capital is available in English
- ✓ Tested and certified by Casino Bonus Center · Rating: 2.9/5
- ✓ Game Providers: DragonGaming, Saucify, Arrows Edge, Qora Games, and Rival
Terms & Conditions apply · Play responsibly
DrueckGlueck
Good luck made in Germany | Enjoy 50 free spins on first deposit!
- ✓ Bonus Code: GLUECK
- ✓ Bulgarian players are accepted
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- ✓ DrueckGlueck is available in 3 languages: German, English, and Norwegian
- ✓ Tested and certified by Casino Bonus Center · Rating: 3.9/5
- ✓ 95 Game Providers: Play n GO, Evolution Gaming, Realistic Games, Pragmatic Play, Betterlore, BW Gaming, QuickSpin, Tom Horn, Crucible Gaming, Leander Games, Iron Dog Studio, Golden Hero, and others.
Terms & Conditions apply · Play responsibly
Casinoin
Get an exclusive 120% bonus plus 60 wager-free spins!
- ✓ Bulgarian players are accepted
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- ✓ Mobile-friendly games · Enjoy playing on smartphones and tablets
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- ✓ Rating: 3.5/5
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Top 10 Online Casino Bonuses in Bulgaria (August 2025)
Expert-Rated Real Money Casinos with Top Bonuses
Looking for the best online casinos in Bulgaria? Our expert team has tested and reviewed hundreds of real money gambling sites to bring you the top 10 choices for August 2025. SnatchCasino, Grand Mondial, and Zodiac Casino 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 Bulgaria
Curious which brands stand out among Bulgarian 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:
- GambleZen Casino – Ranked as the #1 most popular online casino among Bulgarian players this month. Check why GambleZen Casino is so popular in Bulgaria
- SpinCity – Holds the #2 spot in popularity with Bulgarian players for August 2025. See Current Bonuses at SpinCity
- Sloto Cash – Currently ranked #3 among Bulgaria’s most played online casinos. View Available Promotions at Sloto Cash
Browse our expert-ranked list below and claim your exclusive welcome bonuses today!
| Online Casinos Bulgaria | Welcome Bonus |
|---|---|
SnatchCasino Casino Fun, Beach Vibes, Gangster Style | Bonus of 225% up to €1,000 + 100 cash spins |
Grand Mondial Get 150 chances to become a millionaire | 150 cash spins |
Zodiac Casino 80 chances to be a millionaire for €1 | 80 cash spins |
GambleZen Casino €3,625 in Bonuses + 350 Free Spins | Bonus of 200% up to €500 + 100 cash spins |
SpinCity 30 Free Spins for Bulgarian Players! | Bonus of 200% up to €300 + 100 cash spins |
Tsars An adventure-packed online сasino! | Bonus of 100% up to €300 + 100 cash spins |
BetHog Get ready for a wild ride! | Bonus of 100% up to $5,000 |
Captain Cooks Casino Get 100 Chances to be a Millionaire! | 100 cash spins |
Luxury Casino Five exclusive bonuses up to €1,000 | Bonus of 100% up to €150 |
Yukon Gold Casino 150 Chances to Win One Million Euros | 150 cash 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 Bulgarian players to ensure you get the biggest sign-up bonuses, top-tier games, and the most rewarding loyalty programs.
