Learn How Slots Bonus Codes Work

Learn the secrets of Slots Bonus Codes - where to find them and how they work. Get all the info you need to maximize your slot winnings.

Because Online Casinos need to make money to keep their business thriving, they must keep their clients and come back for more.

This is where promotions and bonuses feature. When it comes to the bonus features, they come in several forms, from welcome bonuses, no-deposit bonuses, free spins, and the rest. How customers can claim them varies.

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One of the popular ways among many casino sites is by giving away bonus codes which are entered as part of a registration process or when making your deposit. These steps qualify players for the retrieval of their bonuses.

From covering the types of bonuses you can expect to be eligible for, to everything you need to know about bonus codes, this article is here to guide you.

When do Bonus Codes apply?

There are generally two instances that will require a bonus code entry:

  • When registering a new account
  • When you’re making a deposit

In the first scenario, the registration form will leave out a blank space for where the registration code should be entered. This is where you’ll use your special qualifying code. The rest of the form needs you to give some personal information, including your banking details.

The second case requires you to enter a code when making a deposit. You’ll have to choose a banking method that best suits you and link it to fund your casino account. After which, you will be asked to enter your bonus code.

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Why do online casinos ask for bonus codes?

Most online real money casinos give out multiple bonuses throughout the day. The bonus code lets them know exactly which bonus you’re applying for when registering or placing a deposit.

The following is an example of a site requiring a bonus code:

  • An online casino has two bonuses running at the same time
  • The first one is 50 free spins, and the bonus code is FS50
  • For the second one, you have to match your initial deposit up to $400 by 100%, the code is DEP400

The two offers are distinct from each other. This is why they need to use separate and unique deposit bonus codes to set them apart. Thus letting the casino know which bonus you’re opting for.

Bonus Codes and affiliate links

Outside of Bonus Codes, casinos use affiliate links to differentiate bonuses. An affiliate recruits potential customers for the casino by employing a website or as an individual. It receives a commission based on the work it does.

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An affiliate entices customers by using bonus codes and inviting new customers to sign up to a casino site. To attract affiliates, casinos will allow them to offer lucrative bonuses to prospective clients. For instance, if a casino gives away 300 free spins for a particular game, they’ll let an affiliate give away that same bonus for 500 free spins.

Online Casinos need to determine which customers come from affiliates. That’s why they use affiliate links to figure out who gets a commission. This is how affiliate links work:

  • A gaming site registers for a casinos affiliate program
  • They get unique links to recommend the casino
  • They add the links to text that promotes bonuses
  • You stop by a casino website and see a no deposit that sparks your interests
  • You decide to click on the link, and it leads you to the casino
  • The gaming website receives credit for any commission tied to your play

The key difference between a bonus code and an affiliate link is that the latter doesn’t need you to signup. Clicking on the link automatically qualifies you for the bonus.

What kinds of bonuses are available through codes?

The gaming world is centred around bonuses and codes. The following are the most common deals you’ll find when it comes to offering bonus codes.

No deposit Bonus Codes

How these bonus feature works are in the name. Most bonuses demand a deposit. Certainly not this one. All that is requested of you with a no deposit feature is registration.

After completing registration for a new account, you receive free spins or a cash amount. Either way, you then play with the offer, in the hopes of generating winnings that you can withdraw later. To withdraw your winnings, you need to meet the terms and conditions.

Deposit Bonus Codes

An online casino will use this bonus to match up a deposit up to a specified amount. The general amount is 100% but goes higher in some cases. Contrary to a no deposit bonus where you’re only allowed to withdraw winnings, with a deposit bonus you can take all your money. Here’s an example of how it works:

  • A gaming site offers a 300% bonus matching up to a $500 deposit
  • When you deposit $500, you qualify for a $1500 bonus
  • If you meet all the terms and conditions, you can draw $1500

Free Spins Bonus Codes

These are a little more flexible as they can come as no deposit or deposit bonus features. In any case, you use them to generate winnings through slots. Let’s take a look at an example of how they work:

  • There are 15 free spins.
  • You use these spins, and they help you generate $100 in winnings
  • After complying with the terms and conditions, you draw whatever amount is left of your winnings

Cashback Bonus Codes

This bonus feature transfers a percentage of your losses back to you. It normally covers a player’s first week of playing games at a new casino site.

  • A casino gives away 20% cashback on losses that occur in the first week
  • You deposit $200 and lose it all
  • 200 x 0.2 = $40

Some instances won’t ask for anything and simply offer the bonus. Others might ask that you first meet their terms and conditions and earn the $40.

Where do you find bonus codes?

Online casinos are creative about their means when it comes to distributing bonuses. The following are places you can expect to find bonus codes:

Affiliate websites

These can be operated by individuals or gaming websites whose purpose is to promote online casinos. They dedicate their sites to casino news, gambling strategy tips, bonus opportunities, and more things to do with the gambling industry.

As mentioned above, they receive commission according to the players they send to online casinos.

They attract players into registering at casinos by boosting bonuses on their platform. Sometimes all they need is for players to follow the links for them to receive their commission. In other instances, they require punters to enter a unique bonus code.

Casino websites

Affiliates are more of an external option for casinos. More often than not, they use their own websites through search engines and social media to advertise their offerings. They also publicise the bonus codes on their websites.

Typically they’ll put a bonus code on their homepage as part of a welcome bonus feature. After which, any other additional special offers are mentioned under the promotions tab.

Casino newsletters

As newsletters go, online casino newsletters relay information or news related to gambling. They also use the platform as a means to promote bonus codes. They will email content to their subscribers, including several bonus deals.

Players can then use the codes when they visit the casino sites they apply to. When it comes to gambling, there’s always a good and a bad side.

Pros

  • They help clarify bonus entries to casinos.
  • They are straightforward in their application.
  • Sometimes all you need is a link to automatically qualify you for a bonus.
  • They can be accessed through various medium.

Cons

  • A few missable ones do exist because of strict terms and conditions.
  • Some require that you signup for an online casino.
  • When making multiple deposits using bonus codes, you have to be accurate and not enter the wrong code.
  • The older generation of slot players is used to mechanical, straightforward slots. Bonus codes tend to put them off as they require steps unfamiliar to their betting process.

FAQs

It depends on the terms and conditions set down by the casino making the offer. That is why it’s advised for players to read through them, to be sure of the deal they’re signing up for. If it’s an offer for a no deposit code, then you won’t have to make a deposit.

No, they don’t. The simplest way to find out if they do is by checking the casino website’s promotions tab. That is where all the bonuses are usually listed.

When registering to a new casino site or making a deposit, there will be an empty space allocated for a player to enter their bonus code. This can be found through other promotions that lead a player back to the gaming site, or the casino site itself will have the code displayed on its homepage.

The chances are that you can’t. It depends on the type of bonus the bonus code qualifies you for. Most terms and conditions make winning a lot of money difficult because of their wagering requirements.

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Chris Grand Casino & Games Reviewer

As a content writer specializing in iGaming, my goal is to keep players informed about the latest industry trends and game releases. I also strive to deliver honest and insightful content that adds value to players' experience.

Last Update: September 22, 2025