Top casinos with bonuses on second deposit · Page 4 of 9
Terms & Conditions apply · Play responsibly
N1 Casino
200 Free Spins plus €4,000 in Bonuses for all New Players!
- ✓ Bulgarian players are accepted
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- ✓ Tested and certified by Casino Bonus Center · Rating: 3.9/5
- ✓ 39 Game Providers: Spinomenal, Evoplay, Swintt, Amusnet, Push Gaming, Booming Games, 1X2gaming, Playson, Amatic, NextGen Gaming, Endorphina, High 5, and others.
Terms & Conditions apply · Play responsibly
Merlin Casino
Feel the Spell of Big Wins with Wager-Free Bonuses, Free Spins & Daily Promotions
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- ✓ Bulgarian players are accepted
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- ✓ Rating: 3.9/5
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Terms & Conditions apply · Play responsibly
Blackjack Ballroom
Step into the Ballroom with a €500 Bonus Boost Reserved for You
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- ✓ Tested and certified by Casino Bonus Center · Rating: 3.9/5
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Terms & Conditions apply · Play responsibly
AllStarz Casino
Start Your Gaming Journey with a Stellar €1,200 Bonus + 300 Free Spins!
- ✓ Bulgarian players are accepted
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- ✓ Over €17 Million in Jackpots by Games Global
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- ✓ Rating: 3.9/5
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Terms & Conditions apply · Play responsibly
Loki Casino
Up to €21,000 bonus & cashback in casino games!
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- ✓ Tested and certified by Casino Bonus Center · Rating: 3.9/5
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SpinStar
Race to Win a BMW and enjoy Huge Bonuses on Casino Games and Sports Betting!
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- ✓ Tested and certified by Casino Bonus Center · Rating: 3.9/5
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Terms & Conditions apply · Play responsibly
Spinarium
Claim Up to €1,938 Instantly or Enjoy a Four-Step Bonus Package
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- ✓ Rating: 3.9/5
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Top 10 Online Casino Bonuses in Bulgaria (October 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 October 2025. GambleZen Casino, Zodiac Casino, and Grand Mondial 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 second spot in popularity with Bulgarian players for October 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 |
|---|---|
GambleZen Casino €3,625 in Bonuses + 350 Free Spins | Bonus of 200% up to €500 + 100 Free Spins |
Zodiac Casino 80 chances to be a millionaire for €1 | 80 Free Spins |
Grand Mondial Get 150 chances to become a millionaire | 150 Free Spins |
SnatchCasino Casino Fun, Beach Vibes, Gangster Style | Bonus of 225% up to €1,000 + 100 Free Spins |
Immerion Casino & Sportsbook Built for Winners | Bonus of 100% up to $1,000 + 100 Free Spins |
SpinCity 30 Free Spins for Bulgarian Players! | Bonus of 200% up to €300 + 100 Free Spins |
Tsars An adventure-packed online сasino! | Bonus of 100% up to €300 + 100 Free Spins |
Captain Cooks Casino Get 100 Chances to be a Millionaire! | 100 Free Spins |
Luxury Casino Five Exclusive Bonuses up to €1,000 | Bonus of 100% up to €150 |
BetHog Get ready for a wild ride! | Bonus of 100% up to $5,000 |
* 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 Bulgarian players to ensure you get the biggest sign-up bonuses, top-tier games, and the most rewarding loyalty programs.
