May 2025 Best Sweepstakes & Casino Bonuses

Not Sure Where to Start? Let Us Guide You

Choosing an online casino or a sweepstakes casino can be a daunting task. You could spend hours analyzing bonuses, casino game lobbies, promotions for existing players, and player experiences.

But wouldn’t you rather spend that time playing casino games?

Here are some tips to help you find the best online casinos.

Step-By-Step: Claiming a Casino Bonus

Every online casino offers some type of welcome bonus as well as promotions for existing players.

There are two types of casino bonuses: no-deposit bonuses and purchase promos. Many welcome bonuses include both.

Here are the steps you’ll need to take to claim an online casino no-deposit bonus:

1. Click the “Claim Offer” button on our website to be directed to the casino’s signup page.

2. Click “Join Now” or “Sign Up”.

3. Fill out the form with the required information (usually your name, birthdate, address, email address, and phone number.

4. Accept the terms and conditions.

5. Enter a bonus code (if prompted).

6. Confirm your email address and mobile phone number.

Your bonus should be added to your account upon successful completion of the signup process, including any qualifying actions.

Here are some additional steps you may need to take to claim an online casino deposit bonus or first-purchase promo:

1. Click on the “Promotions” page to see all available purchase offers.

2. Choose the promotion you wish to accept to be taken to the cashier section. (You may be able to claim the promotion directly from the cashier page.)

3. Enter how much you’d like to deposit or purchase (you’ll need to make a minimum qualifying deposit).

4. Choose your payment or deposit method.

5. Complete the process with a third-party payment processor or directly with the casino.

Your bonus funds should be available for immediate gameplay.

Bonus Value Rankings

We don’t just rate casino bonuses based on the dollar amount – we consider several factors, including terms and conditions, wagering requirements, average casino game return-to-player percentage (RTP), and game contribution percentages.

Dollar Amount: Obviously, the higher the bonus, the better! Yes, we consider how much you’ll get when you sign up or make a deposit at an online casino because we want you to get the best bonus possible.

Terms and Conditions: We consider bonus expiration dates, qualifying actions, qualifying games, wagering requirements, and game contribution percentages, which we’ll break down in the following sections.

Wagering Requirements: If a bonus comes with 1x wagering requirements (the amount of times you need to play bonus funds and sometimes the deposit before you can withdraw winnings), that’s a pretty good deal!

But if a bonus comes with 30x wagering requirements, you’ll need to play your bonus funds more before you can withdraw winnings.

Qualifying Games: Some online casinos only allow you to play bonus funds on qualifying games. We want to see a good selection of slots, table games, live dealer games, and instant win games that contribute toward wagering requirements.

Game Contribution Percentages: At most online casinos, slots contribute 100% toward wagering requirements but table games, video poker, and live dealer games may not contribute at all or may only contribute a fraction of what other games do.

Average Casino Game RTP: If qualifying games have low RTPs, you don’t have as good of a chance of winning.

This is why we consider each online casino’s average game RTP when rating bonuses.

All of these factors show the true value of an online casino bonus, so we break them down for you to give you a chance of winning real money.

Trending Right Now

Now that you have an understanding of how we rank online casinos, let’s take a look at the sites that are popular with other players!

The table below shows the most popular online casinos in the industry.

Trending Reviews

OddsSeeker’s reviews break down the pros and cons of each online casino. The table below shows which of our online casino reviews are most popular with our readers.

Trending Bonuses

One of the top reasons to sign up for an online casino is claiming the welcome bonus – but not all bonuses are created equally!

The table below shows which online casino bonuses are most popular with our readers.