What casinos have the best bonuses on slots? Featuring an RTP of 96.6%, the Magic Portals slot machine game is one of the very best ones on this list. Once Upon a Dime. What better way to begin this list than with one of the most iconic slot machines of all-time? The Egyptian-themed Cleopatra slot is a 5-reel, 20-payline title that is hugely popular for a reason.

Bonuses are the one area where slot players have it good in addition to comps. Slots have a high profit margin so casinos prefer that players clear their bonuses at slots rather than at table games, for example.

This means two things:

1. Casinos compete intensively for slot players.
2. Casinos create bonus offers with slot players in mind.

Slots bonuses are essentially free money if you're going to play slot machines anyway. However, usually you don't actually get to keep the bonus money - just the money you won using it.

Online casinos rarely give the players an edge with bonuses though. House edge in slots is high enough to keep the advantage on the casino's side regardless of how generous the bonus offer may seem. With that said, there are significant differences between online slot machine bonus offers and some of them are much better for the player than others.

Slots Bonuses Compared

Slot bonuses are awarded based on how much players wager so they're easy to analyze; the requirement varies between 2x to 100x the size of the wager, although 2x would be an unusually low requirement and 100x a ridiculously high.

In addition to deposit bonuses, casinos offer other extras for signing-up, such as free spins, cashback or free money. Casinos may also have a Player's Club which provides its members with additional benefits.

If you decide to use online slots bonuses outside of what's been mentioned here, pay close attention to terms and conditions; specifically which games can be played for the bonus and how many times the bonus has to be wagered.

Finally, as you can see, the biggest bonus is not always (or even often) the best one. Size matters, absolutely, but clearing terms matter the most. A huge bonus with impossible terms is worse than a small bonus that's easy to clear.

Getting Bonuses Without Depositing

Every now and then online casinos decide to offer no-deposit slots bonuses, which are hard to come by at casinos with strong track records. I assume this is because a player interested in a no-deposit offer is unlikely to make a deposit, which in turn means little money for the casino.

I don't recommend no-deposit bonus offers to anyone simply because they usually require a deposit at some point anyway. The 'no-deposit' is misleading since most of the time you'll find the mention of a deposit requirement somewhere 'hidden' in the terms and conditions of the offer.

Not to mention, most of the casinos with no-deposit offers are small and have just recently started in the business -- those are the kind that you should avoid depositing money into (suggesting you want to get it back).

Bonuses After Depositing

Online casinos are well aware of that you may be interested in joining another site to take advantage of a new bonus offer, so every now and then they offer reload bonuses to encourage you to keep on playing (or perhaps to get back to playing in case you've been gone for a while).

Another popular way is to offer bonuses for the first X amount of deposits. For example, you may get a 100% deposit bonus for the first three deposits with a maximum limit of $1,000 in bonus money.

Either way, the same applies to slots reload bonuses as deposit offers: reload bonuses are good for you if you're going to play anyway, however, they're never a good enough reason to start playing. They'll simply help you to lose less.

But Remember...

Look at the slot payout comparison as well when choosing a casino since it's easy for online casinos to offer big slot machine bonuses if their slot payouts are low.

For example, if casino A returns 94% instead of casino B's 96%, it doesn't take much for casino A to offer slightly better clearing terms for a slots deposit bonus. (In the long run, payout percentages should be the most important consideration anyway.)

I recommend the following sites for more about casino bonuses:

• Beating Bonuses - A comprehensive list of casino bonuses of all kinds although I wish the site was a little easier on the eye.
• Casino Bonuses - I know the owner of Casino-Bonuses.org and he builds terrific websites - this is another one in the making.

Finding a good bonus offer to play slots games in an online casino is easy. Pretty much every online casino offers a tasty welcome offer to whet your appetite. Once you have signed up, you’ll have even more promotions and special offers thrown at you to keep you there for the long haul. The choice can be a bit overwhelming, so we’ve analysed and compiled the best online slots bonuses out there right here on this page.

What to Expect From a Slots Casino Bonus

Online slot machine players get the best deal when it comes to online casino offers. Generally speaking, all welcome offers can be used to play slots games. Some casinos stipulate that you can’t use the extra cash on other casino games such as roulette and blackjack, or perhaps only a small percentage. However, it’s always wise to pay attention to the terms and conditions.

Many online casinos match your first deposit up to a specified amount. This money is often added to a separate account so you can play, but not withdraw from it. You may also have to fulfil wagering requirements to unlock the offer (and the winnings made with the bonus money). You’ll find the most common online slots bonus types below.

Free spins are often included as part of a slots welcome package. This is a popular way of enticing new players to a casino because you get a chance to try out the slots games for free while potentially winning real money. There is a slight catch; you’ll still have a number of play-throughs to satisfy even if you get lucky building a bankroll with a promotion such as this.

Online Slots Casino Bonus Codes

Bonus codes are used to distinguish offers from each other – like a no-deposit bonus for new customers or a special online slot machine bonus. Online casinos can also use these codes to determine where a new player has been referred from, and as such, partners can stand to profit from the referral. Many online slots bonus codes have the intention of enticing players to the newest slot sites, but some are incentives for existing players. They can unlock the best bonus slots casinos have to offer.

Bonuses for Specific Payment Methods

All welcome bonuses can be used to play online slot machines, which means it’s rare to find additional offers for this type of game. However, it’s possible to find promotions related specifically to the type of payment method you are using. New payment methods are springing up all over the place, and online casinos are keen to get on the bandwagon to ensure making deposits is as easy for you as possible. Offering an online slots bonus for depositing using a certain payment method is a novel way to encourage your participation. For instance, 888casino offers bonuses for paying with PayPal.

No-Deposit Casino Bonuses

A no-deposit bonus gives you the chance to sign up with an online casino and start playing without depositing money. It’s a great way to get your foot in the door and test out the slots games on offer. This tends to be the best slots welcome bonus you will find, and it’s often a deciding factor when a punter decides to join an online casino.

There are plenty of generous offers out there to choose from, but it’s important to consider the finer details when assessing which no-deposit bonus suits you best. Sometimes the offer doesn’t take the form of real cash, and you may have to wager a minimum amount of times in order to access the money.

Free Spins for Slots Games

No-deposit free spins enable you to play for free after signing up at an online casino. You can play immediately and in order to get your hands on your winnings you may need to match the minimum wagering requirements. Some casinos take a different approach by requiring you to make a deposit before getting your free spins. In this instance, the amount of free spins on offer may be determined by the amount you deposit. Wagering requirements will apply.

Wagering Requirements

Most slots signup bonuses – such as the types on this detailed list on Wikipedia – don’t mention the wagering requirements until you get down to the small print. Keep an eye out for this because it is very common. You will normally only unlock the stated bonus – and the winnings made with the cash– once you have wagered a specified amount of times. If you are told the wagering requirements are 20, and the bonus is £50, you have to wager 20 x £50 = £1000 before you can get your hands on your winnings. Additionally, some casinos insist that you must wager the combined total of the amount and the amount you deposited.

Wagering requirements also tend to apply to free spins. For example, if you win £100 using free spins, a wagering requirement of 30 dictates that you have to wager £100 at least 30 times before being allowed to withdraw your prize. You should always read the terms and conditions to avoid a misunderstanding.

Declining the Bonus Offer

The terms and conditions associated with online casino bonuses are enough to scare some people off. The advantage of playing without a bonus is that you can withdraw your winnings at any time, instead of complying with a wagering requirement you may never meet.

If you are keen to play without the online slot machine bonus then we’d advise you to contact the casino’s customer services before signing up and making a deposit. This is because some welcome bonuses are automatically credited to your account. Most of the time they are not, and in such cases, you simply have to uncheck a box when signing up.

FAQ’s

How Can I Get the Best Slots Signup Bonus?

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Aside from the amount on offer, look for a bonus offer with reasonable playthrough requirements. If you have to wager your deposit amount over 50 times before being able to withdraw any winnings, then you should be sure you are in it for the long haul. Keep an eye out for deals being offered by other online casinos, and always read the terms and conditions. You can also head to our best online casino ranking to further inform yourself about online slots casinos.

What is a Bonus Hunter?

Winorama Casino

A bonus hunter is someone who stalks online casinos and regularly jumps ship to sign up for the best bonus slots offers around. It’s something frowned upon by most casinos, and it can lead you to become blacklisted.