Best Free Spins Bonus Codes for September 2021

Welcome to the CasinoMentor free spins bonus page! Here you will have access to the latest online casino deals and authentic reviews. Have you made your choice yet? If the answer is no, take a moment to read through the information we provide below. Don't worry - it's free!

Showing bonuses: Bonuses valid for players from United States (CHANGE) which were Published in the last 6 months
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Wagering requirements: 40WR
T&C's apply

Bonus Terms and Conditions

18+.New players only. No deposit required. Up to 50 locked free spins (FS18p) on sign up, usable on Rainbow Slots only. Expires 7 days after registration. All winnings paid as bonus credit. Bonus credit has 40x wagering requirement. Max withdrawal without depositing is £50. You may withdraw the funds in your cashable credit account. T&Cs apply, BeGambleAware.org

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Wagering requirements: 30x bonus
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Wagering requirements: 30x bonus
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Wagering requirements: 30x bonus
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Wagering requirements: 30x bonus
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Wagering requirements: 30x bonus
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Wagering requirements: 30x bonus
NO CODE REQUIRED
Wagering requirements: 30x bonus
NO CODE REQUIRED
Wagering requirements: 30x bonus
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Wagering requirements: No

What Are Free Spins Bonuses?

If you have ever tried playing slot games from different online casinos, you must have heard the phrase "free spins" at least once. So, what are they? 

They are lucky bonuses that appear when you hit certain game conditions, such as three special symbols on reels 1, 3, and 5. They will give you the opportunity to continue playing without wagering, and even increase the prize by many times! Sounds interesting, doesn't it? However, they are not easy to achieve because of that considerable value, and often you have to spin hundreds of times to have a chance for those free spins.

Free spin bonus
Free spin bonus (Source: Adobe Stock)

Many online casinos are now offering free spins as a bonus for new signups or for depositing a certain amount. And there are also many of those free spins bonuses that are fake or unusable, especially when they are masked behind very complicated rules. However, we guarantee that all the no deposit free spins offered are authentic and updated regularly. The only thing you need is to visit our website and choose your preferred bonuses.

Types of Free Spins Bonuses

Like other bonuses, free spin bonuses are also very diverse in form and usage. However, they all serve the same purpose: to give you an extra chance of winning real money playing slots at your favorite casino. Read through the overview of free spins bonus offers below to choose the right one for you.

Free Spins Deposit Bonus

This is probably the most popular free spins bonus for punters. Every time you deposit at a particular online casino, you will have the opportunity to receive free cash or a corresponding number of free spins. They are usually only usable in fixed slots; However, do not worry because those slots are often very popular such as Starburst or Book of Dead. Be sure to read the wagering requirements carefully before playing; Otherwise, you won't be able to withdraw your winnings.

Free spin slots
Free spin slots (Source: Freepik)

Free Spins No Deposit Bonus

Another equally popular offer is the no deposit free spins. Unlike the free spins deposit bonus, this offer does not require you to cash in. Instead, they are given away for free to new players and usually do not require high rollovers. However, their main disadvantage is the small value because of their “no deposit” nature. You can find all the best free spins no deposit bonuses on our website here.

Free Spins Promotion

Besides appearing in the welcome offers, free spins also appear in regular casino promotions. In fact, nearly all free spins casinos offer a wide variety of free spins promotions to their members, and no offer is the same. These offers often change, be it weekly or monthly, but they all serve players’ interests. Be sure to read the terms and conditions carefully before redeeming because you may need to deposit before using them.

Free Spins Prize

One of the other popular offers is the free spins prize. Usually, if you participate in the casino's VIP system, you will get free spins as part of the perks. You can also get free spins by winning tournaments and lotteries, completing challenges, unlocking specific achievements, and so on.

How to Redeem Free Spins Bonus

Now that you understand what free spins bonuses are, the next thing you need to do is redeem them at your favorite online casino. Again, we recommend using our list of offers for the most reputable deals. The three steps below will guide you through how to redeem those lovely bonuses:

Choose Your Favorite Reward

Free spin mega wheel
Free spin mega wheel (Source: Freepik)

The list we provide will show you a lot of different free spins offers. All that's left is to filter out what you're interested in, read the online casino review carefully, go through the terms and conditions, and sign up. Our special slot promotions are all tested for quality and reliability, so feel free to use them. You can choose between free spins deposit bonus or no deposit free spins - totally up to you!

Create an Account With the Casino

Signing up for an account is easy; It only takes a few minutes before you can start playing. You need to fill in the username, password, personal information, phone number, email, bank account for deposit and withdrawal, and some other authentication information. The online casinos we offer are all tested, thus you don't have to worry about scams and fraudulence.

Use the Free Spins Bonus Code

After successfully registering an account, you still need a special free spin code to activate the offer. You can find them right on our review page, very simple and convenient. All of them are linked to the best deals, possibly even exclusive to CasinoMentor. If you don't like the hassle, we also have code-free promos for you.

Claim Your Free Spins Bonus Now

After going through this article, you will know better what you need in a free spins bonus. If you're still wondering, let our list of the best free spins bonuses 2021 save you some time. All of them are safe, reliable, and are perfect for a relaxing gambling night. Good luck, and have fun!