Top casinos with bonuses on second deposit · Page 5 of 9
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Grand Hotel Casino
A Five-Star Online Casino Experience with €560 in Welcome Offers
- ✓ Bulgarian players are accepted
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- ✓ Mobile-friendly games · Enjoy playing on smartphones and tablets
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- ✓ Over €3.9 Million in Progressive Jackpots
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- ✓ Tested and certified by Casino Bonus Center · Rating: 3.8/5
- ✓ 39 Game Providers: Switch Studios, Infinity Dragon, SlingShot, Fortune Factory, Neko Games, Stormcraft, All For One, Just for the Win, Blue Ring Studios, Hammertime Games, Foxium, Circular Arrow, and others.
Terms & Conditions apply · Play responsibly
HotSlots
Double the Heat with €200 Bonuses + 50 Free Spins Not Once, But Twice!
- ✓ Bulgarian players are accepted
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- ✓ Available in multiple languages, including English
- ✓ Tested and certified by Casino Bonus Center · Rating: 3.8/5
- ✓ 61 Game Providers: NOVAslots, Fantasma, WinFast Games, Booming Games, StakeLogic, Leap Gaming, Blue Guru Games, Pragmatic Play, Gaming Corps, Evolution Gaming, Slotmill, OnAir Entertainment, and others.
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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- ✓ Rating: 3.8/5
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Terms & Conditions apply · Play responsibly
Cosmobet
Your Gateway to Top-Tier Sports Betting and Casino Action
- ✓ Bulgarian players are accepted
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- ✓ Online sports betting
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- ✓ Rating: 3.8/5
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Terms & Conditions apply · Play responsibly
WinSpirit Casino
Embrace the Spirit of Winning with Bonuses for Casino & Sports Betting!
- ✓ Bulgarian players are accepted
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- ✓ Rating: 3.8/5
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Nostalgia Casino
A Glimpse into Gaming's Golden Age
- ✓ Bulgarian players are accepted
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- ✓ Live Casino · Play against real croupiers at Nostalgia Casino
- ✓ Over €3.9 Million in Progressive Jackpots
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- ✓ Tested and certified by Casino Bonus Center · Rating: 3.5/5
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Terms & Conditions apply · Play responsibly
Tsars
200 Free Spins + €2,000 in bonuses · An adventure-packed online сasino!
- ✓ Bulgarian players are accepted
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- ✓ Tested and certified by Casino Bonus Center · Rating: 3.5/5
- ✓ 57 Game Providers: Play n GO, Gamzix, RubyPlay, G Games, Slotmill, Wazdan, Gaming Corps, High 5, Kalamba Games, AvatarUX, ELA Games, Push Gaming, and others.
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, 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 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 |
Grand Mondial Get 150 chances to become a millionaire | 150 Free Spins |
Zodiac Casino 80 chances to be a millionaire for €1 | 80 Free Spins |
SnatchCasino Casino Fun, Beach Vibes, Gangster Style | Bonus of 225% 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 |
Casino Classic Get 40 Spins for Just €1 | 40 Free 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 Free Spins |
Yukon Gold Casino 150 Chances to Win One Million Euros | 150 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 Bulgarian players to ensure you get the biggest sign-up bonuses, top-tier games, and the most rewarding loyalty programs.
