Best Online Slots Bonuses for 2018

Bonuses for online slots are great for real-money players looking to earn something extra.

Online slots bonuses can come in various forms, but they all require playing top slots and hitting the big combos. If you're looking to play online slots that offer the best payout rates and massive jackpots, then be sure to join the number one ranked casino on this page, , featuring the very best, multi-payline video slots as well as renowned, three-reel slot machines. Of course, you'll get to keep your slots winnings when you trigger a bonus. The hardest choice you'll have to make is what to do with all that lovely cash.

At we find the best online slots bonuses for you. All of our recommended sites carry regular promotions and attractive welcome bonuses to get you playing and winning right away.

Get the best real-money slots online bonuses:

  • The biggest slots bonuses for new players
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  • Grab free spins when you open an account
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The Best Casinos for Bonuses

  • Our top rated casino
    • Payout %
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  • #1
    Welcome Bonus
    4.75 out of 5 stars
    T&Cs apply
    • 97.55%
    • 520 +
    • Progressive, Traditional, 3-Reel, 5-Reel, 7-Reel
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    Welcome Bonus
    4.5 out of 5 stars
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    • 97.43%
    • 490 +
    • Progressive, Traditional, 3-Reel, 5-Reel, 7-Reel
  • #3
    Welcome Bonus
    4.35 out of 5 stars
    T&Cs apply
    • 97.25%
    • 400+
    • Progressive, Traditional, 3-Reel, 5-Reel, 7-Reel
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Why Bonus Offers?

Why you should read this page

As an online casino player bonuses matter a whole lot. This page walks you through why that is, what type of bonuses are out there and how you can find the best casinos based on the bonuses that they offer. It lists off some of the leading options that you can play, and makes finding quality bonuses a whole lot easier online.

Casinos love to dish out free cash to players. Bonuses are a good way of attracting new customers, and keeping them.

To keep things interesting, sites find weird and wonderful ways to get slots players gambling with them. At the best websites in 2018, you'll find a range of slots bonus promotions. With a little homework, you can find one that works for your budget and playing habits.

Types of Bonuses

If you're looking for good bonuses, online slots can be used to win hundreds of dollars in free cash. But picking the right one is your first task. Let's take a look at the kinds of real-cash slots bonuses you'll find on the net.

No-Deposit Bonus

If you're short of cash and want to access bonuses online, slots players can sign up for a no-deposit bonus.

No-deposit bonuses let you play slots for a day or two. Once your total "winnings" have been calculated, you'll have to keep playing in order to release the money. Typically, you'll have to "wager" the winnings a certain number of times. However, if you play a lot of slots, clearing this type of bonus can be easy.

What's the best online slots bonus for you will depend on many factors, including the size of your bankroll, how much cash you can risk over the course of a month, and what types of online casino games you play.

Free Spins

Types Of Online Slots Bonus

New casino customers can sometimes enjoy free spins on popular slots. The offer is usually introduced when a big new slot is released too.

With free spins, players have 50 or 100 spins to play without charge. The total amount you "win" must then be gambled many times over before it's released. So, if you have $50 of winnings and the wagering requirement is 20x, you'll have to gamble another $1,000 of slots play before the $50 is paid out.

Welcome Bonus

New depositors at an online casino can also use slots to work off a welcome bonus. A welcome bonus is a "match deposit" paid by the casino. If you deposit $100, and the casino matches it 100%, you can win back $100 absolutely free.

You will have to wager the $100 first, usually 20-40 times, but most online slots contribute 100% of their play towards the bonus amount.

Leaderboard Tournaments

Casinos love to pit slots players against each other. In a standard tournament you may have to accumulate the most profit from 20 consecutive winning spins. Whoever gets the most "profit" wins the leaderboard. A real-cash jackpot will be spread out among the top five or ten leaderboard finishers.

Discover the difference between welcome bonuses, free spins, no-deposit bonuses, and tournament leaderboards, and how they can offer you more playing power at your online slots casino.
Finding The Best Slots Bonuses

Finding the Best Slot Bonuses

If you're into bonuses, online slots are great for earning some free real money. Top casino sites on the Internet boast the latest 3D and 5-reel slots, all packed with exciting graphics and bonus features.

At, we only feature the sites that score best in our reviews. Our team loves its slots. Online bonuses can add a serious top-up to anyone's bank balance, and that's why we scour the web to find the best.

All of our casinos have generous welcome bonuses and regular slots promotions to keep things fresh. Try a site today and spin your way to big profits.

Best Bonus Slot Casinos


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What are online slots bonuses?
Slots bonuses award free real cash if you play enough slots over a set time period. Bonuses vary from site to site, but most offer free spins or match a deposit.
How do they work?
Bonuses reward free money if players wager enough cash on online slots.
Are they worth it?
For players who put in the time playing slots, online bonuses can reward some big prizes. It's worth checking the bonus terms and conditions to make sure you can realistically work off the bonus.
How am I eligible to get a bonus?
Welcome bonuses are reserved for players making their first deposit. However, good casinos will offer regular deposit bonuses and free spins promotions for loyal customers.
What types are available?
Free spins and no-deposit bonuses don't require real-cash play to earn money. Leaderboard bonuses are like competitions that reward cash prizes if you accumulate the most winning spins. Finally, a deposit bonus matches a player's first deposit. If you play enough games, the slots sites will pay out the same as you put in. Find out more in our online slots bonus guide.
How much do I need to deposit?
It differs from casino to casino, but you can qualify for a bonus with just $5. No-deposit bonuses require no real-money but you will usually have to register a credit card.
How are they paid?
Bonuses are usually paid out in increments over a few months. Again, sites vary on payout timeframes so check the terms and conditions before you activate a bonus.