Best online gambling sites for May 2025
You can play at the best online casinos for online gambling today. Check out our shortlist to find secure sites that offer real money gambling, big bonuses, hundreds of games, and more. This month, our top spot goes to RealPrize.
Our top recommended casinos
#1 Top rated casino
- Get 5,000 Coins free every day
- Start earning VIP points from sign up
- Play your way with 24/7 support
2
- Exclusive promo code: CORGBONUS
- 1300+ Slots, Live Casino, and Bingo
- Redemptions available
3
- Crown Coins Loyalty Program
- FREE Daily Rewards & Weekly Challenges
- Mobile App for iOS Available
4
- Exclusive promo code: CORGBONUS
- 3,000+ games inc. Stake originals
- Weekly slots battles for 50M GC
5
- 1500+ Games, Slots & Live Dealer Games!
- FREE Daily Rewards
- Authentic brand, Made in the USA
6
- Exclusive promo code: CORGBONUS
- Win cash prizes on the MCJACKPOT
- Get free GC every time you log in
7
- Exclusive promo code: CORGBONUS
- Top-tier gaming providers
- Win huge CASH prizes
8
- Exclusive promo code: CORGBONUS
- Get rewarded with daily bonuses
- Play your way with no redemption cap
9
- A 200M jackpot on every game
- Get 1,500 free gold coins daily
- Enjoy 700+ exciting games
10
- Generous Welcome Bonuses
- Extensive Game Selection
- Daily Rewards and Promotions
Features of top gambling sites
💲Real money gambling sites | 100+ |
🎮Top gambling games | Blackjack, slots, roulette, video poker, baccarat, poker, keno |
💳Minimum deposit | $1 |
⚖️Gambling licenses | MGA, GRA, UKGC, iGO |
⭐Best gambling app | RealPrize |
Play free casino games today
Looking to test your skills before signing up to an online gambling site? You can practice for fun with our free games library. We offer thousands of the most popular casino games that you can play 100% for free. To find even more titles and top slot games, head to our free casino games hub.
Buffalo
Cleopatra
88 Fortunes
Roulette
Cash Eruption
Expert online gambling game guides
Casino match
Not sure where to play? Find your perfect place with our casino match tool.
The latest gambling sites to avoid
Our review process is carefully designed to make sure every casino we recommend is of the highest quality. We look at data protection and regulation, bonus terms and conditions, game variety and progressive jackpots. You can check out all the casinos that failed to make the grade right here on our list of sites to avoid.
- Why you should avoid
- Unprofessional customer support
- Site operators linked to questionable practices
- Not paid players their winnings
- Why you should avoid
- Reports of players not receiving winnings
- Misleading claims of licensing
- Unresponsive to customer complaints
- Why you should avoid
- 18+ months for withdrawal
- Locked-out accounts
- Slow response times
How we rate the top online gambling sites
Every online gambling site goes through our 25-step review process. Below is a snapshot of our criteria for ranking gambling operators.
Safety and security
We start by ensuring that the site has a proper license from a respected jurisdiction. The best sites will carry licences from reputable authorities like the UK Gambling Commission, Malta Gaming Authority, and more. We also like to know that every casino site is secure and has fully encrypted software using SSL. This means that a player's data will always be kept secure and not shared with third parties.
Games and software
A top online gambling site will offer a range of new and classic casino games. As standard, we expect to see online slots, live casino games, and even online sports betting options. In general, we look for over 750+ casino games, though the very best gambling sites will feature over 1,000 titles to choose from. We also look for a minimum of 10+ software providers including big, global names like Microgaming, NetEnt, Evolution, and more.
Banking and payments
A top gambling site will offer quick and easy casino payments. Most gaming platforms will have a range of deposit options including Visa, Mastercard, PayPal, e-wallets, and more. In our opinion, the best sites will offer 10+ payment choices, all with reasonable deposit and cashout limits. High limits should cover around $5,000 and processing times should be less than 24 hours.
Bonuses and promotions
No gaming site is complete without a range of casino bonuses and promotions. We look for welcome bonuses (typically deposit bonuses) that are generous and that have fair wagering requirements. We look at industry averages and only recommend justified welcome offers. In addition, we investigate the range of promotions for existing players including free spins, VIP schemes, bonus bets, rewards, and more.
App and mobile casino
Nowadays, any top online casino operator needs to work on mobile. We look for sites that function seamlessly in a mobile browser. We like to see popular casino games are optimized for mobile, and that 90% of all desktop games are available on the mobile casino. Bonus points go to the brands that have a dedicated gambling app which is regularly updated for iOS and Android. In our casino reviews, we also like additional extras such as mobile-accessible live chats or even app-specific bonuses.
Best gambling apps and mobile sites
Around the world, you'll find most top gambling websites will be fully accessible on mobile devices. Top online casino sites have built some of the best gambling apps around that include highly unique features. You'll commonly find two-factor security, unique mobile bonuses, plus app-exclusive casino games. Below are just a handful of some of our best gambling apps for 2025.
#1 Top rated casino
- Get 5,000 Coins free every day
- Start earning VIP points from sign up
- Play your way with 24/7 support
2
- Exclusive promo code: CORGBONUS
- 1300+ Slots, Live Casino, and Bingo
- Redemptions available
3
- Crown Coins Loyalty Program
- FREE Daily Rewards & Weekly Challenges
- Mobile App for iOS Available
Benefits of gambling online
A larger variety of gambling options
Gambling online offers a huge selection of games that you can try out for free first. Lots of casinos even have bingo and poker rooms attached. Funds can easily be transferred from one tab to another, giving real-money players in USA even more choice. Simply log into your preferred casino website to play hundreds of slots games, craps, blackjack and roulette.Big bonuses and free bets
Online gambling sites offer lucrative welcome bonuses to new players. These bonuses give you huge amounts free cash in return for choosing them as your number one casino. You may get free spins on the latest slot, which is a great way of earning real money with minimal risk.Great security
All online casinos abide by the strictest security standards. Regulated online gambling sites use industry-standard 128-bit or higher encryption to protect players. They also have independent auditors in place to test the software before it hits the market. Auditors make sure that a casino site's payouts are accurate on a regular basis.Convenience
Players across the globe can log in to a gaming account from their mobile device and access the best in table games and slots. This means you can play for real money at a time and place to suit your needs. All the sites we recommend have optimised their mobile gaming experiences, so check out our shortlist and download the top gambling app for your smartphone, whether you’re playing on iPhone, iPad or Android.Our real money online gambling tips for players
To ensure you get the most out of your real-money casino gaming, we asked our expert reviewers for some top tips…
- 1
Use a trusted site
Don't hand over any money until you've established that you're on a licensed casino site that is independently audited to provide fair games, and which meets all of the industry standards for quality. All of our recommended casinos will fit that bill. - 2
Boost your bankroll with a bonus
Kick-start your gaming with some extra cash. It will make your money go further and give you a bigger sum to start with. Some of the best bonus offers are available at new casinos. - 3
Pick the games you love
Whether it's online poker, roulette, blackjack, baccarat, or jackpot slots, make sure your money goes towards your favorite games. It's important to shop around for the sites with the best choices available before you start laying down your own money. - 4
Choose the best payment options
Always check whether your local currency is available, and make sure you're eligible to make real-money transactions. Now you can even gamble at crypto casinos if you prefer more anonymity and speedy transfers. Some banking options for online gambling are free to use, and the best casinos provide quick deposits and withdrawals. However, there may also be some form of ID verification process before a withdrawal is authorised. - 5
Find top online gambling apps for mobile
Tablet and smartphone gamers can enjoy real-money online casino and sports gambling for Android and iOS devices. Pick a gambling site that offers no-hassle, downloadable apps and instant-play games.
Other gambling types
- Real money
- When you want to play for real money, you can rely on the help of our experts to find you the best deals and best casinos.
- Fastest payouts
- Winning is great, and getting paid out in time and in a safe way is even better. Our payout guide will tell you how to spot casinos with fast payouts.
- Mobile
- Whether you play on an iPhone or Android, mobile gambling apps offer top graphics, smooth software and best of all, you can play everywhere.
Best gambling sites - my final thoughts
There are many high-quality gambling sites to choose from in USA. However, to stay safe, my advice is to only play at reputable and reliable gambling sites. All the brands below offer top safety and security paired with a vast collection of gambling options.
However, my top pick has to be RealPrize for May. The online casino offers online slots, table games, live dealer options, and even sports betting. Plus, the brand has a high level of security, lots of payment options, and a top customer support team. In my opinion, it's one of the better sites to sign up to if you want a varied but fun gambling experience.
| Rank | Casino | Sign up bonus | Win rate | Visit site |
|---|---|---|---|---|
| #1 | RealPrize | 625,000 Gold Coins + 125 SC Free + 1250 VIP Points | 97% | Play Now |
| #2 | WOW Vegas | 1.75 Million WOW Coins + 35 Free Sweepstakes Coins | 97.33% | Play Now |
| #3 | CrownCoins | Get 200% More Coins on First Purchase – 1.5 Million CC + 75 SC | 96% | Play Now |
| #4 | Stake | 550,000 Gold Coins, $55 SC + 5% Rakeback | 96.5% | Play Now |
| #5 | High 5 Casino | Get 700 GC, 55 SC, 400 Diamonds + 1 SC daily | 97.01% | Play Now |
| #6 | McLuck | 57,500 Gold Coins + 27.5 Free Sweepstakes Coins | 96.78% | Play Now |
| #7 | Pulsz | Up to 367,000 Gold Coins + 32.3 Free Sweepstakes Coins | 96.94% | Play Now |
| #8 | Hello Millions | Exclusive Offer: 245,000 Gold Coins + 117.5 Free Sweepstakes Coins | 97.10% | Play Now |
| #9 | Jackpota | 50,000 Gold Coins + 25 FREE Sweepstakes Coins | 97% | Play Now |
| #10 | MegaBonanza | Get Up To 200,000 Gold Coins + 104 SC FREE | 98.40% | Play Now |
Latest gambling news
News
Read all the latest stories from our online gambling industry news team. We work around the clock to bring you the inside scoop.
Responsible gambling
Online gambling should only ever be safe, secure and for entertainment purposes. Most sites will offer several responsible gambling tools to help you stay in control of your gaming like time-outs, deposit limits, self-bans and more. You can head to our responsible gambling hub for help. Or if you think you or someone close to you has a problem, you can find support at sites like BeGambleAware or GamCare.Frequently asked questions
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Alexander Korsager has been immersed in online casinos and iGaming for over 10 years, making him a dynamic Chief Gaming Officer at Casino.org. He uses his vast knowledge of the industry to create content across key global markets.
Ian grew up in Malta, Europe's online gaming hub and home of top casino regulators and auditors such as eCOGRA and the Malta Gaming Authority. After completing his Master's degree in Glasgow, he returned to Malta and started writing about casinos. He's worked on hundreds of casinos across the US, New Zealand, Canada, and Ireland, and is a go-to authority for Casino.org's team.
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