May's most popular casino bonuses
Based on the number of visits received by each gaming site in April, here is the list of the 21 most popular online casinos listed at CasinoBonusCenter.com
Grand Mondial
Get 150 chances to become an instant millionaire for only $10 More about Grand Mondial
- ✓ Bonus up to 150 free spins on your first deposit
- ✓ Games developed by Ino Games, Real Dealer Studios, Infinity Dragon and others
EnergyCasino
Enjoy 30 free spins plus a $400 welcome package More about EnergyCasino
- ✓ A 100% bonus up to $200 extra with your first deposit
- ✓ Games developed by Novomatic, Microgaming, Evolution Gaming and others
TornadoBet
Explore the thrill of sports and casino gaming with a €500 welcome package! More about TornadoBet
- ✓ A 100% bonus up to €200 + 50 free spins with your first deposit
- ✓ Games developed by iSoftBet, Yggdrasil Gaming, Pragmatic Play and others
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Casino Luck
Welcome offer:
100% Bonus up to
$150
+ 150 free spins
Bonus on first deposit
New customer only · 18+ · Gamble responsibly · Terms & conditions apply
Casino Luck
A bonus of $150 + 150 Free spins on Book of Dead - Mobile, tablet and desktop
- ✓ Play directly in your browser – No software installation needed
- ✓ Games for mobile devices · Play casino games on your smartphone or tablet
- Live casino · Play against real croupiers at Casino Luck
- Tested and certified by Casino Bonus Center
Software: NetEnt, Microgaming, Williams Interactive, NeoGames, ELK Studios, Play n GO, Amaya Cryptologic, NextGen Gaming and Evolution Gaming
Spin Casino
Sign-up Bonus:
50
free spins
No deposit required
Spin Casino
Unveil your perfect Welcome Bonus: Free spins, Massive cash bonuses, or 100 chances to win a Millionaire Jackpot
- 50 free spins No deposit required (New customers)
- ✓ Play directly in your browser – No software installation needed
- ✓ Downloadable games are also available
- ✓ Games for mobile devices · Play casino games on your smartphone or tablet
- Live casino · Play against real croupiers at Spin Casino
- Over $20,901,567 in Microgaming Jackpots
- Tested and certified by Casino Bonus Center
Software: Microgaming, NetEnt, OnAir Entertainment, Pragmatic Play, Red Tiger, Ezugi and Evolution Gaming
Guts
Welcome offer:
100% Bonus up to
$100
+ 1 reward spin
Bonus on first deposit
Guts
A $100 bonus plus a guaranteed reward on the "Game of Guts"
- ✓ Play directly in your browser – No software installation needed
- ✓ Games for mobile devices · Play casino games on your smartphone or tablet
- Live casino · Play against real croupiers at Guts
- ✓ Online sportsbook
- ✓ Play poker online at Guts – Online poker room
- Over $20,901,567 in Microgaming Jackpots
- Tested and certified by Casino Bonus Center
Software: StakeLogic, Yggdrasil Gaming, Playson, Novomatic, Red Tiger, Blueprint Gaming, Push Gaming, Relax Gaming, Kalamba Games, Thunderkick, Gaming Realms, Wazdan, Slotmill, NolimitCity, Spearhead Studios, Booming Games, PG Soft, Williams Interactive, iSoftBet, Slingo Originals, QuickSpin, Play n GO, Oryx Gaming, 1X2gaming, PearFiction, NetEnt, NextGen Gaming, NYX Interactive, Hacksaw Gaming, High 5 and more providers.
WinsPark
Welcome offer:
100% Bonus up to
$200
Bonus on first deposit
WinsPark
Up to $200 bonus: More chances of winning the $200.000 jackpot!
- ✓ Play directly in your browser – No software installation needed
- ✓ Games for mobile devices · Play casino games on your smartphone or tablet
- Live casino · Play against real croupiers at WinsPark
- Tested and certified by Casino Bonus Center
Software: NetEnt, Anakatech, SpinOro, Leander Games, Evolution Gaming, Red Tiger and iSoftBet
KikoBet
Welcome offer:
100% Bonus up to
€200
Bonus on first deposit
New customer only · 18+ · Gamble responsibly · Terms & conditions apply
KikoBet
Unlock a €450 Welcome Package: Your Gateway to Premier Casino and Sports Betting Excitement!
- ✓ Play directly in your browser – No software installation needed
- ✓ Games for mobile devices · Play casino games on your smartphone or tablet
- Live casino · Play against real croupiers at KikoBet
- ✓ Online sportsbook
- Tested and certified by Casino Bonus Center
Software: Pragmatic Play, Spribe, Vibra Gaming, Salsa Technology, Evolution Gaming, iSoftBet, Yggdrasil Gaming, Casino Technology, Playtech, Gamzix, Play n GO, Foxium, NetEnt, IGT Interactive, NextGen Gaming, NolimitCity, Microgaming, Bombay Live, Oryx Gaming, BRAGG, VIVO Gaming, 3 Oaks Gaming, PG Soft, Felix Gaming, Red Tiger and Amatic
NextCasino
Welcome offer:
100% Bonus up to
$200
+ 100 free spins
Bonus on first deposit
New customer only · 18+ · Gamble responsibly · Terms & conditions apply
NextCasino
Double welcome bonus: $200 + 100 free spins in "Twin Spin"
- ✓ Play directly in your browser – No software installation needed
- ✓ Games for mobile devices · Play casino games on your smartphone or tablet
- Live casino · Play against real croupiers at NextCasino
- Tested and certified by Casino Bonus Center
Software: NetEnt, Microgaming, Williams Interactive, NextGen Gaming, ELK Studios, Play n GO, NeoGames, Amaya Cryptologic and Evolution Gaming
Uptown Aces
Free Bonus:
$20
No deposit required
Uptown Aces
350 free spins · Welcome bonus up to $8,888!
- $20 free! No deposit required (New customers)
- ✓ Play directly in your browser – No software installation needed
- ✓ Downloadable games are also available
- ✓ Games for mobile devices · Play casino games on your smartphone or tablet
- Live casino · Play against real croupiers at Uptown Aces
- Tested and certified by Casino Bonus Center
Software: SpinLogic and Visionary iGaming
