Online slots bonus (UK)

Are slots bonuses making an online slot a better game? Outstanding design, great graphics, higher RTP and big jackpot also count? The most important factors influencing gaming experience are slots with bonus games and free play features. We have compiled the best online slot bonuses with the coolest and most profitable additions, including free spins.

Best slots bonuses

RankCasino SiteReviewBonusplay
1 Fun Casino
100% bonus up to £123 Play NOW »
2 Flume Casino
£500 Bonus + 150 Spins Play NOW »
3 Deluxino Casino
25 Spins Play NOW »
4 NY Spins Casino
100% BONUS UP TO £100 Play NOW »
5 VoodooDreams Casino
100% BONUS UP TO £100 + 100 Spins Play NOW »

It happens that you play slot and find the bonus rounds really great, but after all, you can’t remember which slot game it was. Here you will find an unbeatable compilation of casinos with the best bonus slot features. Bookmark this guide if you like the overview and it is helpful for you. 

Slots with bonus games

Get first deposit bonus to slots

The slot consists of the main game (base level) and a bonus game/features. Sometimes there is also a free play round.

The base game is the starting point. Here you can win by getting 3-7 matching symbols on a pay line. Some base games have a few extras, but generally, it’s very simple.

However, to make the online slot machine more attractive, game developers invented the bonus features. Additional components fill games with excitement and fun, and most importantly, the chance to hit the jackpot. Usually, the bonus and free spins are triggered by certain symbols, such as the scatter or wilds. 

Often you will be transferred to a new game screen, where you will have to complete various tasks or make decisions to win casino bonuses. There are of course different types of slot bonus games. Some bonuses are advanced more complicated and require extra skills. In addition, analyze our dedicated guide to the best payout slots online with a list of casinos featuring high RTP slots with exclusive casino bonuses.

Best slots welcome bonus

There are two different types of bonuses under a slot machine promotion. On the one hand, casino welcome bonus, which the majority of online casinos offer to new customers upon registration. This usually consists of a certain amount of money. You receive this with your first deposit on your player account from the casino. Some operators have also staggered this bonus on several deposits, such as the Fun casino. Here you receive bonus money on your first two deposits.

Another type of slot machine bonus is free spins, which offer casinos on certain slots. Often these are also part of a welcome package. But also customers who have been playing at an online casino for a longer period of time regularly enjoy such goodies. In the context of tournaments, special slots offers come as free spins or extra money directly on the player account.

Somewhat less common, but by no means unusual, is a type of slot machine bonus where you get money from the online casino as a gift. For this, you do not have to provide anything in return, such as a deposit. This type of bonus is called a no deposit bonus.

200% slots deposit bonus

Most online casinos with slots offer 100% on the first deposit. A 200% casino bonus has become rather rare. But this type of bonus still exists. Operators basically triples your casino balance. Check our top list above and claim the 200% slots bonus on sign up in UK casinos.

Free bonus slots

The free play feature is typically unlocked by 3 or more scatter symbols matched on the pay line. Once this feature is active, you get a specific number of free spins, which often depends on the number of scatter symbols. Free spins here means to play one round at the slot at a time without having to pay for it. With 10 free spins, you are allowed to spin 10 times for free.

The number of free spins ranges from 1-50, but the average is 10-20. In general, the free spins feature is one of the most popular with players, as you can win without paying a single cent. 

What you can win depends a lot on the game. Usually, there are also additional modifiers, such as multipliers or extra wilds that help you to get winning combinations.

Pick and win bonus

A “Click and Win” feature is a special subcategory of the online slots bonus features. Here, you always have to choose from a number of items, e.g. boxes, and then you can see what price is behind them. This may lead to further winnings, or you may be unlucky and choose exactly what will end this feature (dead end).

Wheel of fortune

Wheels of fortune are typical for slots with progressive jackpots. This is often divided into 3 categories, in which there are jackpots of different sizes. In the middle is usually the Mega Jackpot, which can contain incredible winning amounts.

So now let’s take a look at the best bonus features of our favorite slots.

Casino slots bonus: slot machines with bonus games

Find the recommended selection of the top 6 most exciting bonus rounds in online slots. The special slot level is a true highlight of every serious video slot.

6. Golden Fish Tank from Yggdrasil

Golden Fish Tank has both free spins and bonus features. Between 3-10 free spins, you can get there. It is recommended to play in Golden Bet Mode, as you will be rewarded with lots of feature picks. The feature round is a pick and chooses feature. You see shells and objects from an aquarium lying on the bottom and you have to make a decision by clicking on one of the objects. Among other things, there are Feature Picks, Stacked Wilds, and Multipliers to win!

5. Blood Suckers from NetEnt

NetEnt has developed an extremely cool bonus feature in this bloodthirsty slot with the creative name “Click Me Coffin Stabbing Bonus Feature”. With 3 or more bonus symbols you can trigger it. You are in an old Victorian graveyard with 12 closed coffins. Open one coffin and stake the vampire inside through his heart. Earn you up to 203x of your wager. However, one of the 12 coffins is empty and will end the feature. This is extremely dark, macabre and scary. So don’t say we didn’t warn you. To make it even more attractive, the slot comes with a legendary RTP of 98%!

4. Hugo from Play’N GO

Hugo is one of the most famous slots and is based on a Scandinavian troll, which we Germans know from the 90s of breakfast television, where participants use the keypad to call the little Hugo to jump and duck through a level. The bonus feature of the slot puts you in a golden mood where you have to choose between different doors. Find treasure, and avoid the evil Don Croco. You can win up to x150. Get even free spins if you earn the Witch’s Scatter Symbol. Choose between 3 different free play options.

3. Mega Fortune from NetEnt

Mega Fortune and its successor Mega Fortune Dreams are probably by far the most famous and popular slots with progressive jackpots in the world of online casinos. We are absolute fans, if only for the reason how many players have already made you a millionaire. These slots are stubbornly keeping themselves in the casino news with one mega win after another.

The bonus game in both of these slots is a wheel of fortune with 3 levels with different jackpots. In the middle is the highest jackpot, the Mega Jackpot. You start on the outer ring and can win cash prizes or free spins etc. If you hit the arrow, then you get one level further, and thus into the second ring. The same scheme applies here. The arrow takes you further. And when you reach the middle and you hit the last arrow, your life has just changed.

2. Bridesmaids from Microgaming

This slot from Microgaming is of course based on the famous Hollywood comedy and has so many bonus features that you don’t even know where to start, nor if it’s worth counting them. There is a wheel of fortune with 10 different cash prizes, 4 bonus features, and a jackpot prize. There is also the so-called Cupcake Booster with different multipliers.

The Boutique Bonus feature lets you play Memory with the Bridesmaids and gives you 66x of your wager. The Magic Moment Bonus Feature shows you original scenes from the movie and has a possible win of 350x of your bet for you. The 2 free spins features are called Flying High Free Spins and Friendship Free Spins.

1. Jack and the Beanstalk from NetEnt

This slot is also an absolute classic from NetEnt games, and one of company best developments. In its free play feature, you get 10 free spins for 4 treasure chest symbols. The Treasure Collection feature runs parallel during the whole round. The golden key symbol can open the door to some great bonuses. 3 keys open locked wallets and turn wild symbols into stacked wilds. 6 keys turn Wild Symbols into 3 Golden Hens, and 9 finally reveal the hidden Golden Harp, which makes all reels go wild!

Slots games with bonus offers

As you can see, there are many ways to create bonus features and that’s a good thing. The variety is fun and brings the necessary variety to the world of casinos. We love what the game developers like NetEnt, Play N GO, Microgaming, and others keep coming up with to surprise their players. The above slots with bonus games are definitely worth testing. We wish you a lot of fun!