Best Bonus Feature Slots 3,8/5 7482 votes
  • Some of the latest free slot machines games 2021 from Bally, IGT, and other top developers have low to medium RTP with attractive casino bonus features. Top among the poker machines to play new free slot games online include Retro Rush from IGT (96.10% RTP) and Tiger Stacks from IGT.
  • Feature drop slots are online slot machines that allow you to enter the slot's free spins bonus round automatically. The cost varies between different slot machines. Usually, you have to pay between 50x and 100x your stake to buy a feature drop. » Bonus buy casino is an online casino that has feature drop slots on their game selection.

Somehow we all get over excited from the words like Free or Bonus, but truth must be told – most casino bonus give no advantage to players. In fact the opposite. Therefore, you must be very picky while choosing to redeem a certain bonus.

We have rated here the best slots bonuses available online. Our rating is based on two main parameters:

Free bonus round slots

Immortal Romance. And coming in fiercely as the number 1 slot game with bonus. Vikings Unleashed MegaWays. This one is from BluePrint Gaming and offers up to 117649 bet.

Alphabetical List of Slots with Bonus Games you can Buy. 300 Shields Extreme, Acorn Pixie. Big Bounty Bill, Bonus Bunnies, Book of Gods, Book Of Rebirth, Buffalo Rising Megaways. Champions of Rome, Curse of the Werewolf. Dark Vortex, Dead or Alive 2 Feature buy, Diamond Mine Extra.

Best Bonus Feature Slots

  1. Winning odds: the edge the bonus gives the player over the casino.
  2. The level of the casino itself.

If you are familiar with online casinos and the way slots bonuses work, you can go ahead and pick the one you like from the table below and have fun! If you would like to get some additional info about casino slots bonuses – general rules, how to redeem them, specific terms that you should notice and how to increase your chances of winning, please keep reading. It’s not long- the most important rules, the MUST know details, are listed below. Three minutes tops and you are ready to go.

Best Casino Bonuses 2021

CasinoBonusUSA
Best USA Casino
$5,000 Bonus

RTG+BetSoft+ Rival
Fastest Withdrawals
+No Deposit Bonus

Slots LV Review
Best UK/CA/AUS Casino
100% up to $/€/£ 100

WR: x15, Cashable
Terms Apply New customers only. £10 min deposit. Bonus 100% up to £100. 35x bonus wager in 30 days. Skrill, Neteller, PaySafe excluded. Play Responsibly 18+ begambleaware.org Full T&C's Apply

Guts Review
100% up to $1,000
WR: x25
Cashable

Ignition Review
100% up to $/€/£ 100
WR: x17.5, Cashable
Terms Apply First deposit only. Deposits with Skrill, PayPal, Neteller and Paysafecard not eligible. Min. dep. £10, max bonus: £100. Free spins: no deposit required, expire after 7 days, Starburst only. Bonus/free spins winnings wagering requirement: x35. Max. bonus bet: £5, can vary. Play Responsibly 18+ begambleaware.org Full T&C's Apply - Full Terms Apply

RP Review
$/€/£ 1000 Bonus + 100 Free Spins
WR: x20 (x40 times the bonus)
Cashable

SPINiT Review
250% up to $2500
WR: x30

Uptown Review
$/€/£ 400 plus 200 Free Spins
WR: x25 (just the bonus amount)
Terms Apply First Deposit Only. Min. deposit: £10, max. Bonus £50. Game: Rich Wilde and the Book of Dead, Spin Value: £0.10, Max Extra Spins:50. WR of 30x Deposit + Bonus amount and 60x Extra Spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the extra spin winnings and bonus amount or £5 (lowest amount applies). Extra Spins must be used before deposited funds. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Play Responsibly 18+ begambleaware.org Full T&C's Apply

Which slots bonuses you should avoid?

The first thing you need to know about different slot bonuses, or any casino bonuses for that matter, is that although bonus always sounds great, not all bonuses are really beneficial for you. Why? The main reason is that all bonuses have certain limitations, the most important ones are the playthrough and the maximum cash out. (Don’t worry, we will explain in a second).

So what does maximum cashout means? Exactly as it sounds- it means that if you take the bonus, there is a limit to what you can actually withdraw. For example: you used a $/£/€ 100 bonus with maximum cashout of $/£/€ 500. You hit the jackpot and win 25,000 $/£/€. Congrats! Now you go to the cashier to withdraw your winnings- the amount that you will get is not 25k, but the maximum cashout amount, which is 500. Bummer…

Rule #1: Do not take bonuses with maximum cashout limitations. The only exception is in case you are getting them for free, like a $10 casino no deposit bonus.

What is PlayThrough

Second important parameter of slots bonuses is the playthrough. Playthrough, also refered as wagering requirements (PT or WR), is the amount you need to bet to “clear” the bonus, i.e., before you can cash out. When you get a bonus from a casino, you cannot cash it out immediately. If that was the case, it would make no sense for the casino to give it to you. You need to bet a certain amount of $/€/pounds before it becomes cashable. That amount is called the playthrough. The most common way to calculate this amount is by multiples of the deposit + the bonus (b+d).
For example if the playthrough is 25 times (b+d) and you make a deposit of $100 and get $200 bonus. The playthrough will be (100+200)*25 = $7,500. It means that you need to make $7,500 worth of bets before you can withdraw your winnings. Therefore, when we are looking for a bonus, we want the lowest possible playthrough.

Rule #2: Best Slots Bonuses have low playthrough

Additional details that you should check when redeeming casino slots bonus is the games that you are allowed to play: some slots bonuses are open for other games as well, blackjack for example, while some are limited to different types of slot machines only, like video slots, 3D online slots, classic slots, bonus slots, etc… It’s very important to know which games you can play while using the bonus- in many online casinos, if you break this rule, your winning will be negated and you will have to start all over again (with your original deposit) and it doesn’t matter if you just played few hands of blackjack- breaking the rule is breaking the rule.

Cashable vs Non Cashable

Most online casino bonuses are given only for wagering purposes. Meaning that after completing the bonus terms, the casino will take back the bonus amount that you were previously given. These bonuses are called phantom, sticky or simply non-cashable. This is the industry default and unless it’s stated otherwise, you should refer to bonuses as non cashable. Cashable bonus, as the name implies, are those that you can keep and withdraw after completing the wagering requirements. Please check our Cashable Bonuses page for more details.

Slots Bonuses Terms

Rule #3: If you are playing on a bonus that is slots only, stick to slots. If you like to mix, slot machines, blackjack, video poker- please choose a bonus that is open to these games as well.
In the table above, we state which bonuses are limited to slots only and which are open to other games as well, so pick the one that suits you best.

Best Slots Bonuses – Summary:

  1. No maximum cashout rule.
  2. Check if the bonus is cashable.
  3. Look for bonuses with lowest playthrough (wagering requirement)
  4. Know which games you can play and which games are restricted.

We have a lot more to say about best slots bonuses and the ways to use them to increase your winnings, but you are probably eager to start. Just remember the rules we listed here and you are good to go. Choose one from the table above and have fun.

For those of you who want to know more, you are welcome to check our Slots Guide section.

Best of luck!

Best Slots Bonuses was last modified: February 24th, 2021 by

Bonus rounds are a real highlight of video slots. They can really pack a punch, both in terms of big wins and entertainment. There are many different types of bonus available. From pick and win features to free spins, you know that when triggered, you are about to experience the best of what the game has to offer. There are some slots however, that take the entertainment to whole new levels thanks to the innovative, unique and exciting bonus features. In this article, you will find out about the top 10 online slots with the most exciting bonus rounds. If that’s not enough for you, we have a whole other page dedicated to the best bonus slots as well! Below you can see our selection of the most exciting bonus slots and by clicking on any of them you’ll jump straight to the bonus description.

NameBonus roundPlay here
The Invisible Man
Free Spins:10 Free Spins
Play here!
Pharaoh’s Fortune
Free Spins:Random amount
Play here!
Rocky
Multiplier:5x
Play here!
Jurassic park
Free Spins:12 free spins
Play here!
Gladiator Jackpot
Free Spins:12 free spins
Play here!
Game of Thrones
Free Spins:4 choices
Play here!
Hot as HadesPlay here!
Pink Panther
Free Spins:Random amount
Play here!
Family Guy
Free Spins:Random amount
Play here!
Avalon II
Multiplier:Free Spins and more
Play here!

The Best Slot Games with Bonus Rounds

Scrolling through the entire list to find the one game that interests you, can be a hassle. That is why we have prepared a list with links for easier navigation. Find the best slot games with bonus games for you. Here is the list of the top 10 slots with bonus rounds:

  • 10. The Invisible Man (Best Wilds Slot Bonus)
  • 9. Pharaoh’s Fortune (Exciting Two Part Bonus Game)
  • 8. Rocky (Unique Free Spin Bonus)
  • 7. Jurassic Park (Top Bonus Game with Five Random Features)
  • 6. Gladiator Jackpot (Exciting Online Progressive Jackpot)
  • 5. Game of Thrones (Choice of Free Spins Round and Coin Flip)
  • 4. Hot as Hades (Wonderful Free Spins with Several Stages)
  • 3. Pink Panther (Unique Bonus Game and Top Progressive Jackpot)
  • 2. Family Guy (1000x Multiplier to Your Winnings)
  • 1. Avalon II (Amazing Variety of Bonuses)

#10 The Invisible Man Slot’s Bonus Round with Free Spins

This branded NetEnt slot boasts a thrilling array of special bonus features. When the Police and Griffin Walking Wilds merge, 10 free spins are triggered. As the wilds work their way off the reels in the free spins, they are added to the respective meter. If the Police meter is filled first, the Police Spins bonus is activated. Here, you get three free spins where five randomly placed Flaming Wilds appear on the reels. Among bonus slot games, free spins are the most popular.

If the Griffin meter is the first to be filled, Griffin’s Rage bonus game is triggered. The bonus round takes place across 3 locations; the Lion’s Head Inn, the Mansion and Ipping Station. At each, you pick from five items, awarding various coin wins, increasing win multipliers or a police hat, which signals the end of the round. The bonus features in The Invisible Man reflect the film theme perfectly and make for a truly entertaining playing experience. Among the various slots with bonus games, this one is of extremely high-quality.

#9 Pharaoh’s Fortune Slot’s Wonderful Two Stage Bonus Round

Whilst there is no shortage of Egyptian themed slots available online, Pharaoh’s Fortune really stands out from the crowd. It injects fun and comedy into the genre and boasts a unique and invigorating bonus round. The golden Pharaoh’s head is the bonus symbol and 3 on a payline activates the free spins bonus. Before the Pharaoh’s Fortune bonus begins, you enter the Pharaoh’s tomb, where you get the chance to boost your number of free spins and win multiplier by picking from the various tiles.

The bonus game features a different set of symbols, and you’ll see the hieroglyphic-style characters dancing around the reels as the Bangles funky 80’s tune, Walk Like an Egyptian blasts out. Furthermore, every single spin during the bonus round is a guaranteed win of at least 3x the activating bet. The fun and quirky dancing symbols, the upbeat soundtrack and guaranteed wins make this an outstanding bonus round that is sure to make you smile.

#8 Rocky Slot’s Incredible Knockout Bonus

If you are a fan of the legendary Rocky movies then this slot will be right up your street. The Knockout bonus is a true highlight of the game. Get a white boxing glove on the first reel and a red one on the fifth to trigger the bonus. You start by choosing which of Rocky’s opponents to fight in the bonus; Apollo Creed, Ivan Drago or Clubber Lang. You will then see video footage of the fight, taken straight from the film, which takes place over 10 rounds.

For every round Rocky wins, you get a coin win. This is a truly unique bonus feature that captures the spirit of the movie perfectly and can provide some big wins. The slot also includes the ROCKY feature. Spell out the word across the reels for a cool 5x total bet win. In addition to these spectacular bonus features, the Rocky also boasts free spins, with extra wilds and double payouts.

#7 Jurassic Park Slot’s Free Spins Enhancing Bonus Features

The Jurassic park is based on Spielberg’s epic dinosaur movie. It includes a riveting 5-level bonus feature that captures the movie theme perfectly. When you land three amber scatter symbols, you are rewarded with 12 free spins. Yet these are not just any old free spins. One of five dinosaur features will be chosen at random, adding enhanced features to the free spins bonus. The Tyrannosaurus Rex bonus features Wild Reels, where the T-Rex can appear and turn up to five reels entirely wild.

The Velociraptor bonus creates Multiplier and Split Wilds. The Triceratops bonus features Running Wilds. The Brachiosaurus bonus includes Mystery Multipliers. Finally, the Dilophosaurus bonus features Winning Wilds, where the dinosaur turns random positions wild. The variety of innovative features along with the outstanding graphics, animations and sound effects make this an incredibly exciting bonus round.

#6 Gladiator Jackpot Slot’s Incredible Progressive Jackpot

Based on the epic historical drama movie, the Gladiator Jackpot slot boasts two sensational bonus features. For starters, the Coliseum bonus is triggered with three or more scatters. You turn stones at four different levels to reveal the number of free games, the win multiplier and which symbols will become extra scatters and wilds during the bonus.

This unique round can award up to 12 free games with up to a 3x multiplier. Plus, the addition of more wilds and scatters helps to boost your chances of wins. Slot machines with bonus games can offer more than just free spins.

The other exciting bonus feature is the Gladiator Jackpot bonus. Nine helmets are displayed which each award a cash prize. Get nine gold helmets and get ready for the thrill of a lifetime, as you win the huge progressive jackpot.

#5 Game of Thrones Slot’s Immersive Free Spins Feature

Free Slots Games With Bonus

Slot machine bonus rounds have never been this immersive. Once you get three scatter symbols, portrayed by the Iron Throne, you enter the free spins bonus game. Choose one of the four houses to earn fantastic bonuses to your wins. The difference between them is how many free spins you get, the multiplier for your winnings and the number of symbols with the house banners that you get. If you’re lucky, you can even re-trigger the free spins by getting three scatter symbols again.

One other feature is the Gamble Trail. After a big win, you can choose to flip a coin, with 4 progressive levels. Guess right, and you double your win. Guess wrong, and you lose your initial bet. This adds an exciting risk for more experienced players. Microgaming has truly captured the spirit of the series, with risk, adventure and unknown excitement. Slot games with bonus games have never been this immersive.

Party Bonus Slots Free Play

#4 Hot as Hades Slot’s Quest for the Crystal Helm

Hot as Hades is a visually superior Microgaming slot, with exceptional graphical quality and animations. Based on Greek mythology with a fun edge, it boasts a captivating bonus round that draws you right into the action. In the Quest for the Crystal Helm bonus, the flaming-haired Hercules meets his adversaries at different levels. Slots with bonus rounds, sometimes have multiple levels of the bonus.

Outwit Medusa, Poseidon and finally Zeus to enter his chamber and pick from the treasure chests to try and claim the crystal helm. There is plenty of action and adventure as you journey through the bonus game, as well as the potential to pocket some serious cash.

#3 Pink Panther Slot’s Variable and Rewarding Bonus Games

Best Bonus Feature Slots In The Us

This Playtech video slot, based on the fun cartoon-film series, has an impressive four bonus slot games which can be randomly triggered as you play. In the Crack the Pink Code bonus, you open safes to reveal free games with multipliers or expanding wilds. In the unusual, the Colour Pink bonus, the Pink Panther and the Little Man paint a wall of numbers in pink and blue. All the pink winnings are added together and multiplied by your total bet to award a cash prize. You can pocket this cash or choose to try your luck again up to 3 times.

In the Wheel of Pink bonus, you accumulate prizes by spinning the wheel to determine your win multiplier. In the Pink Trail bonus, Inspector Clouseau follows the footsteps and stacks up prizes. The game also features the Jackpot Adventure, where you open doors to reveal different characters for a shot at winning a progressive mystery jackpot. All these exciting bonus rounds make the Pink Panther a popular choice with players.

#2 Family Guy Slot’s Huge Winnings Multiplier

If you like Family Guy, you will love the Family Guy. Not only does it feature all the favourite characters from the show with slick, sharp graphics, it includes a rich selection of fun and exciting bonus features. Trigger the World bonus, and you’ll see Stewie spin the globe to reveal which bonus will be awarded. There’s the Drunken Clam bonus, where you can win up to 1000x your bet by selecting different characters.

Best Bonus Feature Slots Bonus

The Chicken Fight bonus is highly amusing, as Peter and the Giant Chicken kick each other’s asses all over town, awarding cash prizes along the way. Lois’ Hot Free Spins bonus gives you a chance to accumulate extra wild symbols during the free plays. The game also boasts 4 randomly triggered Griffin Family features, adding even more fun and big winnings as you play.

#1 Avalon II Slot’s Variety of Eight Bonus Games

If you want a slot with exceptional bonus rounds, Avalon II is not to be missed! As you journey through the Kingdom on the quest to retrieve the grail and return it to Avalon, eight possible bonus games await your discovery along the way. Each time you trigger the Grail bonus, you will see the map with all the different locations and bonus rounds laid out.

They are rich and varied; reforge Excalibur in the Lake of Legend bonus, defeat the Black Knight in the Hall of Shadows and Spin the Wheel of Fortune at the Isle of Avalon. The bonus features also include free spins with extra wilds, trailing wilds and rolling reels, as well as pick and win features. The unique multi-level bonus has the feel of a story, and it really draws you into the game. As such, the Grail bonus is by far the most exciting bonus round you will find in a slot. This variety helps it stand out as the king among slot games with bonus rounds.

Conclusion – Bonuses For All

Bonus slot games can be very entertaining and a great incentive to try out slots. Some tell incredible stories, while others offer unique gameplay elements. Fans of casino games love them for the variety it adds to slot machines. That is why you should always see what bonuses a game has to offer.

That’s all for now. We hope you enjoyed this list and make sure to check out our other pages for more top 10 lists and other articles. See you next time!

FAQ Section

We hope to have provided enough information on the various slots with bonus rounds. However, you may have some other pressing questions regarding the types of bonuses or the various slots that have them. We hope to answer any further questions you may have with this short section

❓ What is a free spins bonus?

A free spins bonus means you can play a few rounds of the game, without spending any of your own money. It's a popular type for slot machines with bonus games as they usually come with multipliers for your wins. Game of Thrones offers the most variety and biggest rewards with their free spins.

🏆 Who is the best developer for bonus games?

The best way to find good slot games with bonus rounds is to look for specific games and not developers. However, some developers are more experienced and will naturally provide higher-quality experiences. Microgaming is one such developer and their experience shows with the wonderful Avalon II.

🎰 How frequently do bonus games appear?

Slot machine bonus rounds are dependent on the volatility of the game. High volatility games will have incredible bonuses, but they'll be hard to get. Try out Hot as Hades for a wonderful low volatility slot with frequent bonuses.

✖️ What are bonus features?

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Bonus features are special effects that can accompany bonus games for more rewards. These can be multipliers or more wilds and can also show up in the base game. For slots games with bonus games that have these features, check out the Jurassic Park Slot.

🥊 What is the best slot with bonus games?

So many slots with bonus games offer a variety of wonderful experiences, that can sometimes be even more interesting than the base game. It can be hard to pick just one. We would pick Rocky for its wonderfully unique Knockout bonus.

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