Top casinos with bonuses on second deposit · Page 4 of 8
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Merlin Casino
Feel the Spell of Big Wins with Wager-Free Bonuses, Free Spins & Daily Promotions
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- ✓ Bonus Code: SPINS20
- ✓ Merlin Casino offers exclusive bonuses for CasinoBonusCenter visitors
- ✓ Bulgarian players are accepted
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- ✓ Online sports betting
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- ✓ Rating: 3.9/5
- ✓ 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.
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Loki Casino
Up to €21,000 bonus & cashback in casino games!
- ✓ Bulgarian players are accepted
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- ✓ Tested and certified by Casino Bonus Center · Rating: 3.9/5
- ✓ 86 Game Providers: Play n GO, Amusnet, ELK Studios, Ortiz, G Games, Kiron Interactive, Booming Games, Nucleus Gaming, Wazdan, Revolver Gaming, Gaming Corps, BF Games, and others.
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Spinarium
Claim Up to €1,936 Instantly or Enjoy a Four-Step Bonus Package
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- ✓ Rating: 3.9/5
- ✓ 165 Game Providers: Games Global, Realistic Games, BBGames, Neko Games, Playson, Spribe, Atomic Slot Lab, Big Time Gaming, CandleBets, Lightning Box, Golden Rock, Spearhead Studios, and others.
Terms & Conditions apply · Play responsibly
SpinStar
Race to Win a BMW and enjoy Huge Bonuses on Casino Games and Sports Betting!
- ✓ Bulgarian players are accepted
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- ✓ Tested and certified by Casino Bonus Center · Rating: 3.9/5
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Terms & Conditions apply · Play responsibly
HotSlots
Double the Heat with €200 Bonuses + 50 Free Spins Not Once, But Twice!
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- ✓ Tested and certified by Casino Bonus Center · Rating: 3.8/5
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KingSpin Casino
Join the Boss’s Inner Circle with a Tripled Starting Balance!
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- ✓ 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
Cosmobet
Your Gateway to Top-Tier Sports Betting and Casino Action
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- ✓ Rating: 3.8/5
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Top 10 Online Casino Bonuses in Bulgaria (July 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 July 2025. SnatchCasino, 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 #2 spot in popularity with Bulgarian players for July 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 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 |
GambleZen Casino €3,625 in Bonuses + 350 Free Spins | Bonus of 200% up to €500 + 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 |
Casino Classic Get 40 Spins for Just €1 | 40 Free Spins |
Yukon Gold Casino 150 Chances to Win One Million Euros | 150 Free Spins |
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.
