It's widely accepted that slots are by far the most popular kind of casino game – at land and online casinos. This is why you'll always find more slot games than any other type of game at online casinos, and the most lucrative bonus offers to match. Gambling fans are drawn to the wide variety of bright and bold themes, graphics, sounds and big pay outs of slots.
The exciting thing about slots bonuses is they give you the chance to sample real money slot games 100% for free (in the case of no deposit slot bonuses or free spins bonuses) or with extra bonus cash from regular welcome bonuses. Either way, slot bonuses allow you to keep your favourite slot reels spinning for longer, ever closer to landing you monster pay-outs.
They're always available to you if you're a first time real money online casino player
You can use them to play some of the best online and mobile slots games on the net
They give you a rare window or demonstration into real money online slot games
In most cases you can bank some if not all of the winnings you accrue from them
To claim a no deposit bonus all you have to do is sign up for a new casino account
When it comes to the most worthwhile slots bonuses, choice always wins out. This is why our team of casino reviewers have compiled a vast selection of the finest online casinos that offer 'cream of the crop' of slot bonuses. By this we mean bonuses with realistic wagering requirements that can be used to access and play the very best quality virtual slots.
The idea is that you have so much fun playing online slots using free casino cash that you'll be only too eager to make your first and/or follow up deposit. In this vein, we've vetted and reviewed each of the casinos below. This is to ensure their bonuses make the grade in terms of being fair, generous and worth the effort of claiming. These are all 5-star bonuses:
If you're a big fan of slots and bonuses you're in luck because there so many different bonus types and individual slot bonuses around that you'll be spoiled for choice. Below you'll find a brief description of the most common online slot bonuses you'll most likely come across at premier online and mobile casinos:
No Deposit Slots Bonus - You don't have to make a deposit to claim this bonus, just sign up for a real money casino account and follow the instructions. Because this bonus is 100% free, it's usually for smaller amounts, typically between $/£/€10 and $/£/€50. You can bank your winnings as per the bonus T&Cs. A deposit will unlock your winnings.
No Deposit Free Spins Bonus - This is similar to a no deposit slots bonus except instead of cash you're awarded a number of free spins (typically between 10 and 50) to use on a prescribed slot game or selection of slots. This is one of the most popular slots bonuses since it's 100% free and purely for slot fans. An initial deposit unlocks your winnings.
No Deposit Free Play Slots Bonus - With this bonus, you're awarded a large amount of bonus cash (that range from $/£/€50 to $/£/€2,500) and 60 minutes (1 hour) in which to win as much as you can with it. Being 100% free, this is a popular slot bonus where, as per the terms and conditions, you can bank your winnings and unlock them with a deposit.
Welcome / Matching / Sign Up Bonus - This is a percentage-based bonus requiring a deposit to unlock it. As such, it is not 100% free like a no deposit bonus. That said, it's a far more generous bonus as you can 'match' your deposit by tens, hundreds, thousands and even more depending on the casino offering it. This translates to even more spins for you.
Deposit Free Play Slots Bonus - With this bonus you're awarded a set number of free spins once you've made a deposit and claimed a welcome bonus. Although not 100% free like its no deposit counterpart, at lease this bonus gives you the chance to play and win on real money slot games. You can even bank all or some winnings as per the bonus T&Cs.
Online slots bonuses each come with a host of terms and conditions designed to explain all of its aspects, from its value, time limit and game restrictions to its maximum pay outs, betting restrictions and, most importantly, its wagering requirements, and more.
These are essentially the rules of the bonus, which if you do not follow to a tee or openly flout, can result in your bonus being cancelled or revoked, your winnings being confiscated or forfeited and even having your membership of the casino permanently revoked.
In other words, online casinos take their bonus offers extremely seriously, especially in the case of no deposit bonuses that are offer 100% free and allow you to withdrawal a portion of your winnings (as long as you meet the respective bonus wagering requirements).
Here are some of the most common slots bonus terms and conditions you should know about:
A bonus wagering requirement is the number of times a particular online casino expects you to play though or wager a bonus before you're allowed to cash out any winnings you may have derived from it.
For instance, if you claim a £25 online slot bonus that has a 20x wagering requirement, this means that you must wager or turn over at least £500 in bets before you are able to make a withdrawal request.
Most online casino bonuses come with game restrictions listed in their respective terms and conditions, which you must adhere to. For instance, you may come across a slot bonus that specifies you can only use your bonus on a specific slot game or list of slots.
Attempting to play restricted games with casino bonus cash can result in the forfeiture of your bonus, your winnings and even your casino membership. This is why it's important to always check the game eligibility before you claim a bonus and start using it.
In order to prevent casinos from being bankrupted by players using freely awarded bonus cash, bonus offers typically have withdrawable limits or, to put it another way, a maximum winnings amount you can cash out from online casino bonus play.
It's always better to know what this amount is before your activate your bonus play to avoid any disappointment down the line if you 'break the bank.' Even if you rack up a big sum, the casino will remove the amount that exceeds its withdrawable limit.
In many cases slot game bonuses come with bet size and type restrictions. In other words, the bonus terms and conditions may dictate a minimum or maximum bet you have to wager per spin, and instruct you not to use the gamble feature to double up. These restrictions are in place to limit the casino's financial liability with bonus cash play.
If you come across online casino bonuses that don't mention slot games specifically upfront before you claim them, be sure to always check their terms and conditions to confirm that slots do in fact contribute to their overall wagering requirements.
Be careful of placing a minimum bet all the time as most online casinos are acutely aware of player betting patterns. For instance, if they notice you betting the absolute minimum on every slot spin, there's a good chance they'll label you a 'bonus hunter' (which they frown upon tremendously) and cancel your bonus and ban you for life.
Make sure that slots count 100% towards the bonus play-through requirements. This is to ensure you can play slots and nothing else in order to meet the bonus wagering requirements. This is important because not all casino games count for 100%. With all other games you may have to play a variety of them to meet the requirement.
While some online gambling fans opt for slot bonuses purely for the opportunity to play slot games for free, others claim them to build up cashable winnings. If you fall within the latter group, always read the bonus terms and conditions before opting in so you don't play the wrong game by mistake and forfeit your bonus and winnings.