Most Popular Online Casinos in January
Terms & Conditions apply · Play responsibly
Rollino
Enter the Fairground with an Exclusive Bonus up to €6,000!
- ✓ Rollino offers exclusive bonuses for CasinoBonusCenter visitors
- ✓ Slovenian players are accepted
- ✓ Play instantly in your browser – No installation required
- ✓ Mobile-friendly games · Enjoy playing on smartphones and tablets
- ✓ Live Casino · Play against real croupiers at Rollino
- ✓ Online sports betting
- ✓ Available in multiple languages, including English
- ✓ Tested and certified by Casino Bonus Center · Rating: 4.1/5
- ✓ 85 Game Providers: 1X2gaming, Platipus, Red Rake, Spinmatic, VIVO Gaming, High 5, Amatic, Pragmatic Play, Playbro, ThunderSpin, Barbara Bang, Thunderkick, and others.
Terms & Conditions apply · Play responsibly
Rockstar Casino
Play to the Rhythm of Big Wins – Get €5,000 in Bonuses and 400 Free Spins
- ✓ 50 Free Spins · No deposit required
- ✓ Bonus Code: CENTER50
- ✓ Rockstar Casino offers exclusive bonuses for CasinoBonusCenter visitors
- ✓ Slovenian 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 Rockstar Casino
- ✓ Available in multiple languages, including English
- ✓ Rating: 3.6/5
- ✓ 37 Game Providers: Pragmatic Play, GameArt, Playtech, Play n GO, Playson, BetSoft, Mascot Gaming, Hacksaw Gaming, NetEnt, Spinomenal, TaDa Gaming, 3 Oaks Gaming, and others.
Terms & Conditions apply · Play responsibly
Jackpot Capital
100 free spins with no deposit required plus a 250% bonus on first deposit!
- ✓ 100 Free Spins · No deposit required
- ✓ Bonus Code: DESTINY
- ✓ Bonus Code: THEJACKPOT
- ✓ Jackpot Capital offers exclusive bonuses for CasinoBonusCenter visitors
- ✓ Slovenian players are accepted
- ✓ Today’s Biggest Jackpot: $1,739,769 · Game: Aztec's Millions
- ✓ 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 Jackpot Capital
- ✓ Jackpot Capital is available in English
- ✓ Tested and certified by Casino Bonus Center · Rating: 3.4/5
- ✓ Game Providers: SpinLogic and Visionary iGaming
Terms & Conditions apply · Play responsibly
KingSpin Casino
Join the Boss’s Inner Circle with a Tripled Starting Balance!
- ✓ 30 Free Spins · No deposit required
- ✓ Exclusive No-deposit Bonus – Available in Slovenia and Selected Countries
- ✓ KingSpin Casino offers exclusive bonuses for CasinoBonusCenter visitors
- ✓ Slovenian 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 KingSpin Casino
- ✓ Available in multiple languages, including English
- ✓ Tested and certified by Casino Bonus Center · 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
Merlin Casino
Feel the Spell of Big Wins with Wager-Free Bonuses, Free Spins & Daily Promotions
- ✓ 20 Free Spins · No deposit required
- ✓ Bonus Code: SPINS20
- ✓ Merlin Casino offers exclusive bonuses for CasinoBonusCenter visitors
- ✓ Slovenian 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
- ✓ 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.
Terms & Conditions apply · Play responsibly
Casino Classic
Enjoy Your First Spin Free — Then Get 40 More Spins for Just €1!
- ✓ 1 Free Spin · No deposit required
- ✓ Slovenian 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
- ✓ Live Casino · Play against real croupiers at Casino Classic
- ✓ Over €6.4 Million in Progressive Jackpots
- ✓ Available in multiple languages, including English
- ✓ Tested and certified by Casino Bonus Center · Rating: 4.2/5
- ✓ 39 Game Providers: Games Global, Pragmatic Play, SpinPlay Games, Evolution Gaming, Blue Ring Studios, NorthernLights Gaming, SlingShot, Alchemy Gaming, Neon Valley, Flip Five Gaming, Wishbone Games, High Limit Studio, and others.
Terms & Conditions apply · Play responsibly
Uptown Aces
$10 Free to try the games · Welcome bonus up to $2,500 whit No-max cashout!
- ✓ $10 free! No deposit required
- ✓ Bonus Code: UPTOWN10
- ✓ Bonus Code: UNPACK
- ✓ Slovenian players are accepted
- ✓ Today’s Biggest Jackpot: $1,739,769 · Game: Aztec's Millions
- ✓ 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
- ✓ Uptown Aces is available in English
- ✓ Tested and certified by Casino Bonus Center · Rating: 3.2/5
- ✓ Games Provider: SpinLogic
Top 10 Online Casino Bonuses in Slovenia (January 2026)
Expert-Rated Real Money Casinos with Top Bonuses
Looking for the best online casinos in Slovenia? Our expert team has tested and reviewed hundreds of real money gambling sites to bring you the top 10 choices for January 2026. Casino Classic, ZotaBet, and Casino Kingdom 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 Slovenia
Curious which brands stand out among Slovenian 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:
- Casino Classic – Ranked as the #1 most popular online casino among Slovenian players this month. Check why Casino Classic is so popular in Slovenia
- KingSpin Casino – Holds the second spot in popularity with Slovenian players for January 2026. See Current Bonuses at KingSpin Casino
- BitStarz – Currently ranked #3 among Slovenia’s most played online casinos. View Available Promotions at BitStarz
Browse our expert-ranked list below and claim your exclusive welcome bonuses today!
| Online Casinos Slovenia | Welcome Bonus |
|---|---|
Casino Classic Get 40 Spins for Just €1 | 40 Free Spins |
ZotaBet Up to €6,000 Bonus · Unlimited VIP Betting! | Bonus of 100% up to €6,000 + 100 Free Spins |
Casino Kingdom 40 chances to become a millionaire for €1 | 40 Free Spins |
Wazamba Big bonuses, Live casino, and Sports | Bonus of 100% up to €500 + 200 Free Spins |
SnatchCasino Casino Fun, Beach Vibes, Gangster Style | Bonus of 225% up to €1,000 + 100 Free Spins |
KingSpin Casino Join the Boss’s Inner Circle for Big Wins! | Bonus of 200% up to €300 + 50 Free Spins |
WildTornado Unleash 200 Free Spins Today! | Bonus of 100% up to €300 + 100 Free Spins |
NetBet €200 bonus + 10 free spins on Vegas | Bonus of 100% up to €200 + 10 Free Spins |
Zodiac Casino 80 chances to be a millionaire for €1 | 80 Free Spins |
BitStarz Claim up to €500 in Bonuses | Bonus of 100% up to €100 + 180 Free Spins |
* Terms & Conditions Apply · Play responsibly
With over 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 Slovenian players to ensure you get the biggest sign-up bonuses, top-tier games, and the most rewarding loyalty programs.
