Top 10 best bonus rounds in online slots
Unique bonus rounds are essential for a great online slot - here are some of the best
There’s a common misconception that online slots are cash grabs with no exciting features or bonus rounds - this couldn’t be further from the truth. Bonus rounds are ultimately the highlight of online slots that can both entertain and provide big wins for players. From the typical wheel of fortune style bonus to more creative boss battles, there’s genuinely so much variety in how bonus rounds are presented.
It can be hard to find the absolute best of the bonus rounds with thousands of online slots available. We at Slot Gods are dedicated to providing you with the best online slot experience possible. If you are on the hunt for the best bonus rounds, you are in the right place.
Here are 10 of the finest slots with the greatest bonus rounds to ensure you have a memorable experience from start to finish.
Dead or Alive 2 - Multiple Free Spins bonuses
- Name:
- Dead or Alive 2
- Developer:
- NetEnt
- RTP:
- 96.82%
- Max payout:
- 111,111x stake
- Volatility:
- High
- Reels:
- 5
- Win lines:
- 9
- Theme:
- Action, Wild West
- Release date:
- 20th Apr 2019
The first Dead or Alive slot is a fan favourite amongst enthusiasts, but Dead or Alive 2 really stepped up the features to the next level. There are 3 different free spin bonus rounds available in this wild west slot, all players need to do is roll 3 scatter symbols during the base game. They are transported to another screen to decide on Train Heist Free Spins, Old Saloon Free Spins or High Noon Free Spins.
Each selection will give players 12 free spins but have their own individual specialties. Train Heist Free Spins has an increasing multiplier, Old Saloon Free Spins wins are multiplied by 2 and High Noon Free Spins transforms symbols in double multiplier wilds or even triple multipliers. Dead or Alive 2 is the sharpest slot in the wild west for unbeatable free spins with multipliers. It shows that bonus rounds don’t have to be overly complicated to be rewarding and sometimes the basics are the best.
Vikings Go To Hell - Bezerk Free Spins
One of the best Viking slots out there, Vikings go to Hell is without a doubt one of the most visually stunning online slots ever created. Not only that, but it has an unbeatable bonus round called Berzerk Free Spins. In this bonus round, players collect rage points by defeating Demons and collecting Treasure for specific characters. Once players reach 100 rage points, level 1 free spins is unlocked.
During this section, players must defeat the Lord of Chains by rolling winning spins and destroying a portion of his health bar. Players who destroy all 3 portions win 2 random wilds and ascend to the level 2 free spins. This leads to 7 free spins and an overall multiplier of 3x. Vikings go to Hell’s Berzerk Free Spins is absolutely incredible - It’s cinematic, epic and full of chances to win. The Vikings Go series has some grand titles but none quite have the bonus round found in Vikings go to Hell.
Street Fighter II: The World Warrior Slot - Beat the Boss Free Spins
- Name:
- Street Fighter II: The World Warrior Slot
- Developer:
- NetEnt
- RTP:
- 96.06%
- Max payout:
- 7,142x stake
- Volatility:
- Medium-High
- Reels:
- 5
- Theme:
- Action, Gaming
- Release date:
- 17th May 2020
Video game adaptations are often a mess - thankfully Street Fighter II: The World Warrior Slot is a masterclass of how to do gaming themed slots right. Eight of the most iconic Street Fighter characters are featured and are available to choose from with their own perks. With the Beat the Boss Free Spins bonus round, you can select one of these characters to take on the final 4 bosses.
Choose from Ryu, Chun Li, Ken, Dhalsim, E. Honda, Guile, Zangief and Blanka to take on the boss. There are 4 bosses to face off with no fixed amount of free spins - but it’s an unpredictable ride. It brings in the nostalgia of arcade players to emulate the feeling of playing on an old arcade machine but with the chance to win cash prizes. With each boss defeated, players receive free spins with an increasing multiplier. The Beat the Boss Free Spins is undeniably unique with one of the coolest bonus rounds out there.
Sausage Party - Wild in the Aisle
- Name:
- Sausage Party
- Developer:
- Blueprint Gaming
- RTP:
- 95.95%
- Max payout:
- 50,000x stake
- Volatility:
- Medium
- Reels:
- 5
- Win lines:
- 20
- Theme:
- TV/Movie, WTF
- Release date:
- 1st Jan 2020
Now this slot may be crude and crass - but it’s unbelievably entertaining with a bonus round that’ll leave you as speechless as the film did. You’d have to have been living under a rock to not know of the legend of Sausage Party. A film that turned everyday items into something more raunchy and unexpected.
On top of the vibrant visuals and entire aesthetic, Sausage Party has a Wild in the Aisle bonus round that takes you into a different screen. All you need to do is spin 3 or more bonus symbols to unlock this bonus round.
In this bonus round, you’ll have the chance to pick on a wheel of fortune style game that has 6 randomly triggered bonuses. There are 3 different free spins, 2 different multipliers and a cash prize round all to be selected during this bonus round. It’s a meaty package that is a gift that just keeps on giving.
King Kong Cash - Wheel of Fortune
- Name:
- King Kong Cash
- Developer:
- Blueprint Gaming
- RTP:
- 95.76%
- Max payout:
- 10,000x stake
- Volatility:
- Medium
- Jackpot:
- Jackpot King
- Reels:
- 5
- Win lines:
- 20
- Theme:
- Animal
- Release date:
- 6th May 2016
It’s not very often that you’ll find a slot with both an impressive array of modifiers and bonus rounds to match. In this animal themed slot, you literally get both. Modifiers can trigger at any moment in King Kong Cash, but it’s the bonus round that will make you go bananas. As soon as 3 or more bonus symbols appear on the reels, you’ll be taken to a wheel of fortune game to decide on the bonus.
There are 4 selections available: Barrel Blast, King Kong Trail, Empire Free Spins and Golden Kong Free Spins. King Kong Cash literally has something to please everyone with in this bonus round. A pick and click game with a cash prize, a Donkey Kong inspired cash trail, King Kong inspired free spins round and a super free spins round! There’s no monkey business in the game and you’ll soon be the king of the jungle with this beastly bonus round.
Age of the Gods Glorious Griffin - 100 Free Spins
- Name:
- Age of the Gods: Glorious Griffin
- Developer:
- Playtech
- RTP:
- 96.08%
- Max payout:
- 40,960x stake
- Volatility:
- Medium
- Jackpot:
- Age of the Gods Jackpot
- Reels:
- 6
- Win lines:
- 4,096
- Theme:
- Animal, Mythical
- Release date:
- 25th May 2020
Everyone within the slot community has heard of the magnificent Age of the Gods series with the mighty progressive jackpot. The most impressive title in the series has to be Age of the Gods Glorious Griffin that has an unbelievable free spins bonus round with up to 100 free spins to be won!
Triggered by landing between 3 and 6 scatter symbols anywhere on the reels, the Glorious Free Games is activated. A measly 3 scatters awards 8 free spins, 4 triggers 15, 5 activates 25 but 6 scatters unlocks the supreme 100 glorious free spins. Even better, there are absolutely no limitations to how many free spins - which means you could win even more than 100 free spins.
During this bonus round, you even have 3x more chance of activating the Ways Plus feature for expanding symbols. The Glorious Free Games bonus round is a gift from the Ancient Greek Gods themselves and is unmatched by any other slot.
The Goonies - One Eyed Willy’s Bonus
- Name:
- The Goonies
- Developer:
- Blueprint Gaming
- RTP:
- 96.00%
- Max payout:
- 500x stake
- Volatility:
- Medium
- Jackpot:
- Jackpot King
- Reels:
- 5
- Win lines:
- 20
- Theme:
- Adventure, Pirate, TV/Movie
- Release date:
- 23rd Oct 2018
There’s no denying that The Goonies is a cult classic, both in the film and the NetEnt slot game. Encompassing the mystery and adventure of being a kid whilst facing the unknown is something that everyone can relate to. This combined with 12 different features and modifiers makes The Goonies a slot that is instantaneously iconic.
Perhaps the biggest draw is the One Eyed Willy's bonus round that is triggered by the One Eyed Willy's bonus boost or by players landing 3 or more scatter symbols anywhere on the reels. Naturally, a wheel of fortune opens up giving players 6 different extra bonuses. Half of these bonuses give free spins, whilst the others have pick and click options with cash bonuses.
Some online slots don’t even have a single bonus feature, but The Goonies offers you 6! With the help from One Eyed Willy, you’ll have the precious treasure in no time. The Goonies is not only a masterclass of how to do a branded TV/Movie slot well - but how to have one of the best bonus rounds.
Gonzo’s Quest Megaways - Free Fall Bonus
- Name:
- Gonzo's Quest Megaways
- Developer:
- Red Tiger Gaming
- RTP:
- 94.66%
- Max payout:
- 20,000x stake
- Volatility:
- High
- Reels:
- 6
- Win lines:
- 117,649
- Theme:
- Adventure
- Release date:
- 21st Jul 2020
Now the original Gonzo’s Quest drew fans in with the impressive Free Fall bonus round that has a multiplier that goes up to 15x. This is essentially a free spins round but symbols fall freely rather than gaining free spins. It’s only natural that the sequel, Gonzo’s Quest Megaways, improves on everything almost every way. The Free Fall bonus round is back but with a facelift this time. It can still be activated if 3 free fall symbols land on the reels with a multiplier that still goes up to 15x.
However, there is now a Royal Wheel to gamble on winning even more free spins but it comes at a risk. The more reserved addition to the Free Fall bonus round is the introduction of unbreakable wilds that can fall onto the reels and remain indestructible when new symbols fall. This seems like a simple addition to the bonus round, but it completely changes the game as you get even more ways to win. Gonzo’s Quest Megaways is a legendary slot with an outstanding bonus round that gives players all they need to find the gold of El Dorado.
Rick and Morty Wubba Lubba Dub Dub - Wubba Lubba Dub Dub Bonus
- Name:
- Rick and Morty Wubba Lubba Dub Dub
- Developer:
- Blueprint Gaming
- RTP:
- 96.11%
- Max payout:
- 50,000x stake
- Volatility:
- Medium
- Jackpot:
- Jackpot King
- Reels:
- 5
- Win lines:
- 20
- Theme:
- TV/Movie, WTF
- Release date:
- 26th Nov 2020
Everyone’s favourite grandfather and son duo are back - this time in Blueprint Gaming’s slot Rick and Morty Wubba Lubba Dub Dub. Based on the adult cartoon, this slot is as bonkers and bizarre as you’d expect. The visuals, sounds and general gameplay fit the wacky aesthetic given from the series - but the added Wubba Lubba Dub Dub bonus round is the icing on the cake.
All that is needed is to land 3 bonus symbols anywhere on the reels to kickstart this bonus round. Players will be randomly awarded one of the 6 bonus features from this round - but you do have the option to gamble for a different one if you aren’t happy. One bonus round has the potential to lead to 6 amazing features. Mr Meseeks Free Spins and Anatomy Wild Monster Spins give players 10 free spins, whilst Evolution of the Picke Wild Spins gives you the unlimited free spins that ends once the syringe is filled.
The Pilot bonus and Rick, Rattle & Roll bonus have a pick and click mini-game that rewards cash prizes with multipliers. The Rick N Roll Mega Bucks bonus feature gives players the chance to land on character jackpots with multipliers ranging from 2x to 5x. The entire feature is astonishing but shows exactly why it’s one of the best bonus round slots out available online.
Immortal Romance - Chamber of Spins
- Name:
- Immortal Romance
- Developer:
- Microgaming
- RTP:
- 96.86%
- Max payout:
- 12,150x stake
- Volatility:
- High
- Reels:
- 5
- Win lines:
- 243
- Theme:
- Horror
- Release date:
- 5th Dec 2011
A cult classic with unforgettable features, Immortal Romance is a triumph in slot history. Despite being released in 2011, it stands as one of the great slot games created with a bonus round that is revolutionary. Whilst it may have a horror theme about vampires, Immortal Romance is all about the Chamber of Spins bonus round. It can be triggered by seeing either 3, 4 or 5 lion scatter symbols anywhere on the reels. The bonus feature from the Chamber of Spins depends on different active modifiers and characters depending on which one triggers it.
Amber’s Free Spins unlocks immediately with 10 free spins and possible triggers. Troy’s Vampire Bat Free Spins unlocks after the 6th bonus trigger with 15 free spins and 6x multipliers. Michael’s Wild Vine Free Spins is activated after the 20th bonus trigger and gives the players 20 free spins with cascading reels. The final free spin feature within the Chamber of Spins is Sarah’s Wild Vine Free Spins where players can gain 25 free spins with wild symbols and retriggers after the 16th bonus trigger.
Retriggers, cascading reels and multipliers mixed with free spins makes for an epic bonus round. All of this can happen within the Chamber of Spins! Other online slot bonus rounds will come and go, but Immortal Romance will forever be enshrined as one of the best.