Bonus Slots US 2022

Slots remain one of the pillars of both online and brick-and-mortar casinos, as both aficionados and casual players enjoy them with a vast variety of options on the table. There are thus many features which are put under the microscope in an attempt to revise the winning potential of a specific machine but there is ultimately no denying that bonus rounds largely increase it when offered.

This has many casino-goers on the lookout for great bonus slots and constantly switching between them, we now compiled a list of fan favorites when it comes to best bonus game slots – offering an insight into their salient features but also linking you to in-depth reviews available with Gambling Hero.

Main Bonus Slots Points

  • Bonus rounds can largely increase the overall winning potential
  • Quality bonus games don’t always mean best slot games
  • Check out all the important features and aspects of the top bonus slots online
  • We also list fan favorites with great bonus rounds to check out
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Important Features of Best Bonus Slots Online

The prime focus here are obviously the bonus games and these often make the core of the winning potential with any slot offering it. However, there’s a lot more to think about when picking one’s new favorite.

RTP & Variance

RTP can be indicative of the winning potential of a game and while it’s largely based on long-term results with a slot, it’s important for the players to make sure they’re enjoying slots with high returns to the player regardless of the fact it holds no promise of wins even during the longest of sessions.

This is closely connected to variance, where volatility can also influence how often one can get a chance to enjoy the bonus games they wanted to take advantage of. A higher volatility means bigger winning but also takes away on frequency players can actually win. Take a look at our guides on whether or not PokerStars is a scam and our FanDuel rating to see if these providers are trustworthy with their RTP rates.

Bonus Game Rules

It can’t be stressed enough how significant knowing the rules of both base game and the bonus features is, including triggers, paylines, winning potential, and more. Paytable will often provide players with all the necessary info but getting one’s head around it is of crucial importance.

Stakes & Winnings

Moving into further detail once invested in a specific game, it’s important to know the possibilities and the limitations of it. Whether you’re a novice player wanting to use your no deposit bonus for slots or a high-roller, minimum and maximum stakes as well as winning are crucial – largely adding to the way gameplay works.


Trying the bonus slots free of charge through demo versions is probably the best piece of advice one can give to all enthusiasts, as even the best bonus slots free can be either a hit-and-miss or a perfect fit. Checking out the game with no pressure of your own investment – or with Free sign-up bonuses – is paramount before spinning the reels for real.


Lastly, it’s just as important where players take their bankroll in search of a specific slot machine. Renowned casinos will always be the best choice with regard to one’s preferences, usually offering a regulated and legal way to enjoy gambling. It’s important to devote great care to casino investigation if a player decides to take up a new casino, again covered to a great degree in our online casino reviews. This means taking a look at security standards, customer care, deposit bonuses, banking options, login security, and many other aspects guaranteeing quality experience once you take your bankroll.
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The Finest Bonus Slots Uncovered

Wheel of Fortune: A Top Gameshow Slot

Wheel of Fortune largely takes its player pool from the show’s popularity and IGT’s slot still attracts attention together with the long-running NBC/CBS production. The popular slot offers an RTP of 96.6% and features five reels in three rows to produce 30 paylines, with a unique approach of opening possibilities the more you play it.

On Tour Bonus is a unique features which plays a huge part of such a concept, fueled by landing scatter on reels two, three, and four to go through six levels – offering Free Spins and enlarged Highest Prize on Bonus Wheel, Letter Board Picker, extra spins, Spin To Win, and ultimately Bonus Wheel trigger with just a single scatter.

Gonzo's Quest: The Quest for El Dorado

Gonzo’s Quest is one of NetEnt’s best-known titles and as such, needs no in-depth introduction. The stylish graphics and animation reminiscent of many flash games and the slot features a number of ways to increase the payout potential with an RTP at 95.97%.

Free Fall symbols take the gold-digging explorer into El Dorado, as the huge door opens and a special set of reels kicks off the free spins. Interestingly, these can be retriggered and even have an increased multiplier of up to 15x, which makes the bonus game very important in the overall gameplay. Even eight years after its initial release, Gonzo’s Quest remains one of NetEnt’s most loved titles with most of the casinos offering it.

DaVinci Diamonds: A Girl’s Best Friend

Another IGT’s title heavily relying on its free spins bonus feature to provide a quality experience and attract great play pools over the years, DaVinci Diamonds focuses on works of the famous inventor and painter. The game has an RTP of 94.93% and holds Wild scatters together with a Tumbling Reels feature.

While free spins is not a classic bonus game, it has been rated essence of the slot as alternate reels take on the scene and offer improved prizes, as scatter symbols pay anywhere they land and can even be retriggered with up to 15 spins at a time. DaVinci Diamonds has been released in 2012 but still has a lot to offer with its simplicity and cultural references, together with lucrative winning potential.

Jackpot Inferno: Into the Hell’s Fire

Everi’s Jackpot Inferno offers an exciting game released in 2016, with RTP of 95.77% and 50 paylines across five reels and three rows. The game features fruits and more classic casino symbols, including Scatter, Bonus, and Wilds. The slot looks very fun and features an appealing look but the winning potential depends on a great jackpot bonus game.

Jackpot Inferno symbols lead to 40 different levels of Jackpot, which take from the level of one’s bet, and the number of scatters landed on the reels. Up to 12 symbols can appear and this would mean the highest jackpot. More interestingly, this is followed by a Jackpot Jump, where players pick from 20 spots to win next-in-the-line jackpots, coin prizes, or +2 moves while searching for them.

Big Prize Bubblegum: The Silliest Slot Machine

Incredible Technologies released Big Prize Bubblegum Slot Machine in 2015 and went for retro gameplay reminiscent of vending machines with 12 kinds of bubbles as symbols, providing a playful environment and promising an RTP of 94.01%. While the game features 1024 paylines, the payouts only get really significant during the bonus game.

During Free Spins, interesting toy capsules are unlocked when landed on the reels and these offer great payouts by themselves. Toy capsule containing Rubik’s Cube symbol awards a Bonus game, though, where players Pick until they pop – choosing from 30 capsules to bag credit awards, mystery awards, and even multipliers all until the pick out a Toothache symbol.

Cash Wizard: Make the Magic Happen

Cash Wizard was released by Bally in 2014 and offers playful gameplay too, set up against a creek and featuring powerful soundtrack which will keep you on your toes. The game holds an RTP of 93.99% with low volatility across 30 paylines to look out for on five reels. The game also features Free Spins but the thrills of it are largely summoned in the great total of five bonus games!

First worth mentioning, Invisible Ink Bonus randomly lands in the middle of the screen, and the player is to click on it to unveil a special multiplier of up to 20x the stake. Wizard does his bit in the Wizard Wild feature when he turns up to four symbols into Wilds and boosts your winning potential. Additionally, Mystery Wheel Bonus is awarded randomly as players get to spin the wheel and get a number of Free Spins or bag a cash reward. Lastly, Free Spins feature is awarded through Free Games symbols on reels 3, 4, and 5 – adding a 3x multiplier to sweeten the deal.

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Get Started Today!

Now that you’ve gotten first-hand info on some of the fan-favorite bonus slots, you can try out these games for yourself, even blackjack! Pick one that best suits your needs and go through a detailed overview linked, before setting up an account with renowned casinos. It’s important to note the casinos offer Demo versions as well as Welcome packs with Free money, which ultimately secure players access to free bonus game slots online.

We'd also recommend that you pick up a fantastic casino bonus before getting started. The current Golden Nugget promo code gives you up to $1,000 in matching funds, while the Mohegan Sun promo code gives you $20 in additional funds, no deposit needed.

Conclusion: Top Bonus Slots Await

Bonus slots normally offer increased winning potential through bonus features and this adds to the players’ enjoyment, accompanied with interesting graphics and animation more often than not. This has many casino-goers exclusively searching for such machines and for a great reason, as these are usually very entertaining too.

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