Top Casinos of May 2025

Curious what are some of the Best Online Casinos to play? Check out our favourite casino sites for May 2025 For this month we have picked the Top Casinos – 4 of them in total – that are packed with some lucrative bonuses, best game providers and payment methods that will allow you to make a deposit and withdrawal with lightning speed. Of course, each online casino we will mention below is fully licensed and regulated – by either Curacao, Malta Gaming Authority or similar legal organization, which means that you can play safely, and with confidence.

Satoshihero Casino: Get 10% Weekly + 10 Min. Wheel

T&Cs Apply

New players only. Welcome Bonus - 100% bonus on your first deposit up to €/$/£100 Unless otherwise stated. This bonus only applies for deposits of €/$/£20 or higher! All you need to do is just deposit the money in your Satoshi Hero account and you will receive this bonus!

*New players only

Betfury Casino: Get $10500 bonus cash + 275 bonus spins

T&Cs Apply

New players only. Welcome Bonus - 590% bonus on your first deposit up to €/$/£2000 Unless otherwise stated. This bonus only applies for deposits of €/$/£20 or higher! All you need to do is just deposit the money in your Betfury account and you will receive this bonus instantly!

*New players only

Bitstarz Casino: Get 5 BTC bonus cash + 180 bonus spins

T&Cs Apply

New players only. Welcome Bonus - 125% bonus on your first deposit up to €/$/£100 Unless otherwise stated. This bonus only applies for deposits of €/$/£20 or higher! All you need to do is just deposit the money in your Bitstarz account and you will receive this bonus instantly!

*New players only

Roobet Casino: 7-day 20% cashback
Up to $1400

T&Cs Apply

New players only. Welcome Bonus - 20% rakeback for 7 days and up to 50% total! All you need to do is just deposit the money in your Gamdom account and you will receive this bonus instantly!

*New players only

TOP 20 Casinos

With so many online casinos out there, it’s often hard to tell the great ones from the mediocre. That’s why SlotWhale has put together a carefully curated list of the Top 20 Online Casinos, giving you everything you need to know in one place.
SlotWhale only recommends the most trusted and reliable online casinos. Every site listed has been tested and reviewed by our team for fairness, security, and overall player experience.

Bonus up to:
$400
$500.000 Wager
* Bonus based new customers only

4.8
*New players only

New players only. Welcome Bonus - 125% bonus on your first deposit up to €/$/£200 Unless otherwise stated. This bonus only applies for deposits of €/$/£10 or higher! All you need to do is just deposit the money in your Stake account and you will receive this bonus instantly!

Bonus up to:
$3000
Welcome Package
* New customers only. 225% match bonus based

4.0
T&Cs Apply
New players only. Welcome Bonus - 100% bonus on your first deposit up to €/$/£1000 Unless otherwise stated. This bonus only applies for deposits of €/$/£20 or higher! All you need to do is just deposit the money in your BitKingz account and you will receive this bonus!

*New players only

Bonus up to:
$1500
Welcome Package
* New customers only. 390% match bonus based

4.8
T&Cs Apply

New players only. 3 Welcome Bonuses - 390% bonuses on your first 3 deposits up to €/$/£1500 Unless otherwise stated. This bonuses only applies for deposits of €/$/£15 or higher! All you need to do is just deposit the money in your Vulkan Vegas account and you will receive this bonus instantly!

*New players only

Bonus up to:
$1000
Welcome Package
* New customers only. 100% match bonus based

4.5
T&Cs Apply

New players only. 40x wagering requirement - 100% bonus on your first deposit up to €/$/£1000 Unless otherwise stated. This bonus only applies for deposits of €/$/£25 or higher! All you need to do is just deposit the money in your 500Casino account and you will receive this bonus!

*New players only

Bonus up to:
$100
Welcome Package
* New customers only. 100% match bonus based

5.0
T&Cs Apply

New players only. Welcome Bonus - 100% bonus on your first deposit up to €/$/£100 Unless otherwise stated. This bonus only applies for deposits of €/$/£20 or higher! All you need to do is just deposit the money in your Satoshi Hero account and you will receive this bonus!

*New players only

Bonus up to:
$10500
Welcome Package
* New customers only. 590% match bonus based

4.8
T&Cs Apply

New players only. Welcome Bonus - 590% bonus on your first deposit up to €/$/£2000 Unless otherwise stated. This bonus only applies for deposits of €/$/£20 or higher! All you need to do is just deposit the money in your Betfury account and you will receive this bonus instantly!

*New players only

Bonus up to:
$500
Welcome Package
* New customers only. 125% match bonus based

4.8
T&Cs Apply

New players only. Welcome Bonus - 125% bonus on your first deposit up to €/$/£100 Unless otherwise stated. This bonus only applies for deposits of €/$/£20 or higher! All you need to do is just deposit the money in your Bitstarz account and you will receive this bonus instantly!

*New players only

Bonus up to:
€1200
Welcome Package
* New customers only. 370% match bonus based

4.5
T&Cs Apply

New players only. Welcome Bonus - 370% bonus on your first deposit up to €/$/£250 Unless otherwise stated. This bonus only applies for deposits of €/$/£20 or higher! All you need to do is just deposit the money in your Verde Casino account and you will receive this bonus!

*New players only

Bonus up to:
$400
Welcome Package
* New customers only. 100% match bonus based

4.5
T&Cs Apply

New players only. Welcome Bonus - 100% bonus on your first deposit up to €/$/£100 Unless otherwise stated. This bonus only applies for deposits of €/$/£20 or higher! All you need to do is just deposit the money in your account and you will receive this bonus instantly!

*New players only

Bonus up to:
$11100
Welcome Package
* New customers only. 225% match bonus based

4.3
T&Cs Apply
New players only. Welcome Bonus - 100% bonus on your first deposit up to €/$/£1000 Unless otherwise stated. This bonus only applies for deposits of €/$/£20 or higher! All you need to do is just deposit the money in your CrocoSlots account and you will receive this bonus!

*New players only

Bonus up to:
Up to $1400
7-day 20% cashback

4.0
T&Cs Apply

New players only. Welcome Bonus - 20% rakeback for 7 days and up to 50% total! All you need to do is just deposit the money in your Gamdom account and you will receive this bonus instantly!

*New players only

Bonus up to:
60% rakeback
High Rollers Package
* New customers only. 15% rakeback for 7 days

3.8
T&Cs Apply

New players only. Welcome Bonus - 15% rakeback for 7 days and up to 60% total! All you need to do is just deposit the money in your Gamdom account and you will receive this bonus instantly!

*New players only

Bonus up to:
€800
Welcome Package
* New customers only. 4000% match bonus based

3.8
T&Cs Apply

New players only. Welcome Bonus - 400% bonus on your first deposit up to €/$/£300 Unless otherwise stated. This bonus only applies for deposits of €/$/£10 or higher! All you need to do is just deposit the money in your HitNSpin Casino account and you will receive this bonus!

*New players only

Bonus up to:
€2500
Welcome Package
* New customers only. 250% match bonus based

4.5
T&Cs Apply

New players only. Welcome Bonus - 250% bonus on your first deposit up to €/$/£500 Unless otherwise stated. This bonus only applies for deposits of €/$/£10 or higher! All you need to do is just deposit the money in your King Billy Casino account and you will receive this bonus!

*New players only

Bonus up to:
5 BTC
Welcome Package
* New customers only. 325% match bonus based

4.0
T&Cs Apply

New players only. Welcome Bonus - 325% bonus on your first deposit up to €/$/£200 Unless otherwise stated. This bonus only applies for deposits of €/$/£20 or higher! All you need to do is just deposit the money in your KatsuBet account and you will receive this bonus instantly!

*New players only

Bonus up to:
5BTC
Welcome Package
* New customers only. 325% match bonus based

4.3
T&Cs Apply

New players only. Welcome Bonus - 325% bonus on your first deposit up to 5 BTC Unless otherwise stated. This bonus only applies for deposits of €/$/£20 or higher! All you need to do is just deposit the money in your Mirax Casino account and you will receive this bonus!

*New players only

Bonus up to:
$1500
Welcome Package
* New customers only. 540% match bonus based

4.0
T&Cs Apply

New players only. Welcome Bonus - 550% bonus on your first deposit up to €/$/£2000 Unless otherwise stated. This bonus only applies for deposits of €/$/£20 or higher! All you need to do is just deposit the money in your Ice Casino account and you will receive this bonus instantly!

*New players only

Bonus up to:
500 Free Spins
Welcome Package
* New customers only. 100% match bonus based

4.0
T&Cs Apply

New players only. Welcome Bonus - 500 Free Spins on your first deposit up to €/$/£500 Unless otherwise stated. This bonus only applies for deposits of €/$/£10 or higher! All you need to do is just deposit the money in your Duelbits account and you will receive this bonus instantly!

*New players only

Bonus up to:
$2000
Welcome Package
* New customers only. 200% match bonus based

3.5
T&Cs Apply

New players only. 4 Welcome Bonuses - 200% bonuses on your first 4 deposits up to €/$/£2000 Unless otherwise stated. This bonuses only applies for deposits of €/$/£20 - 30! All you need to do is just deposit the money in your Tomb Riches Casino account and you will receive this bonus instantly!

*New players only

Bonus up to:
NFT Deposit
Welcome Package
* New customers only match bonus based

4.0
T&Cs Apply

New players only. Welcome Bonus on your first deposit  of NFTs  Unless otherwise stated. This bonus only applies for deposits of €/$/£10 or higher! All you need to do is just deposit the money in your Rollbit account and you will receive this bonus instantly!

*New players only

Best Casinos, Cheers!

Top Online Casinos

Welcome to Slotwhale.com, your ultimate guide to the Best Online Casinos! We’ve carefully curated a selection of top-rated, licensed casinos that offer thrilling games, generous bonuses, fast payouts, and exceptional customer support. Whether you’re a fan of slots, table games, or live dealer experiences, we’ll help you find the perfect platform for safe, fun, and rewarding online gambling.

Dive in and explore the best in the industry, right here at Slotwhale.com!

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Best New Casinos

Best New Casino Bonuses in May 2025

Discover the latest and most exciting casino bonuses right here! From generous welcome offers to free spins and no-deposit bonuses, we bring you the best promotions from new online casinos. Maximize your gaming experience and boost your chances to win with these exclusive deals, updated regularly for your advantage. Don’t miss out—start playing with the top new bonuses today!

Best Casino Bonuses

Bonuses are a great way to extend your play and increase your chances of winning. The best online casinos offer:

  • Welcome Bonuses: Usually the most generous, these are designed to attract new players. They often include matched deposits and free spins.
  • No-Deposit Bonuses: A rare find but highly sought after, these bonuses allow you to play without depositing any funds.
  • Deposit Bonus Casinos: Casinos that offer matching funds when you make a deposit, typically with percentage matches like 100% or 200%.
  • Exclusive Casino Bonuses: Special promotions and deals available only through specific partners or channels.
  • Rakeback Bonus Casinos: Casinos that return a percentage of your losses or “rake” (house fees) back to you as a bonus.
  • Free Spins: Often tied to slot promotions, free spins give you the chance to play specific games for free while keeping any winnings.
  • Loyalty Programs: Many casinos reward regular players with points, bonuses, and exclusive offers as part of their VIP programs.

Sign up on Tomb Riches Casino and claim 100 free spins. Activate within 24 hours to start playing and potentially win big!

T&Cs Apply

CHECK HERE

*New players only

50WINFS
Bonus Code

Sign up on King Billy Casino and claim 50 free spins using the promo code 50WINFS. Activate within 24 hours to start playing and potentially win big!

T&Cs Apply

*New players only

MX40
Bonus Code

Sign up on Mirax Casino and claim 40 free spins using the promo code MX40. Activate within 24 hours to start playing and potentially win big!

T&Cs Apply

*New players only

ACEBONUS
Bonus Code

Sign up on 7bit casino and claim 50 free spins using the promo code ACEBONUS. Activate within 24 hours to start playing and potentially win big!

T&Cs Apply

*New players only

New Online Casinos

cherry

Best Casino Games in May 2025

Looking for the hottest casino games right now? Our Latest Game Reviews dive into the newest and most popular titles — highlighting gameplay features, bonus mechanics, and what makes them stand out. From top-tier providers to unique bonus rounds, we break down everything you need to know before you hit spin.

The best online casinos offer a wide variety of games to cater to every type of player. Popular choices include:

  • Best RTP Casino Slots: Slots with the highest return-to-player percentages, giving players the best mathematical odds of winning over time
  • Jackpot Slots: Progressive and fixed jackpot slot games offering potentially life-changing payouts as the prize pool grows
  • Online Slots: Digital slot machines ranging from classic fruit machines to elaborate video slots with bonus features and diverse themes
  • Table Games: Traditional casino favorites including blackjack, roulette, poker, baccarat, and craps, offering a blend of strategy and chance.
More Games>>>
Online Casinos, Games, and Bonuses at Slotwhale.com
5.0
Satoshi Hero Casino

Satoshihero Casino: Get 10% Weekly + 10 Min. Wheel

Sign up
T&Cs Apply

New players only. Welcome Bonus - 100% bonus on your first deposit up to €/$/£100 Unless otherwise stated. This bonus only applies for deposits of €/$/£20 or higher! All you need to do is just deposit the money in your Satoshi Hero account and you will receive this bonus!

*New players only

Top Casino Game Providers

A great gaming experience depends on the software behind the scenes. The top casino game providers ensure smooth gameplay, cutting-edge graphics, and fair results. Leading names in the industry include:

NetEnt: Known for its innovative and visually stunning slot games.

BGaming: An innovative iGaming provider known for their high-quality slots and table games

Play’n GO: Renowned for mobile-friendly games and creative features.

Evolution Gaming: The go-to provider for live dealer games, offering high-quality streams and professional croupiers.

Pragmatic Play: Famous for its diverse range of slot titles and fast-growing live casino options.

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