The Top Online Slots of 2021

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Illustration of a neon-lit set of slot reels showing fruit symbols and ‘2021.’
BetMGM Jun 20, 2022, 1:19 PM

The offering of real online slots gets more exciting every year. With so much at stake in terms of revenue and brand popularity, developers are going above and beyond to create titles that entice the growing number of people who play slots online.

Join us as we take a look at 10 of the best online slot machines of 2021.

1. MGM Grand Millions

If you want an online casino slot that allows you to feast your eyes on gambling riches while trying your luck at the grand prizes associated with the best online slots for real money, then MGM Grand Millions is well worth a few spins.

Symbols on the reels include golden lion statues, casino chips, bundles of cash and gold bars. The action is set against a rich emerald background. This 5-reel “all ways” online slot machine gives players 243 potential ways to win in the base game and 1,024 ways to win in the free-spins mode. In 2021, this slot – with a relatively low RTP (return to player) of 91.81% – made headlines when it paid out a total of nearly $450,000 in two jackpot wins on the same day!

2. Starburst

If you play online slots for money on a regular basis then you’ve probably given this popular title a try (or at least heard about it). Even though Starburst was launched back in 2011, it keeps right on delivering an exceptionally entertaining experience (especially if you love seeing those wonderful sparkly gems on the reels) and a chance for generous payouts.

The cosmic-themed slot with its out-of-this-world soundtrack has a low variance and a high RTP of 96.1%, which typically means players are likely to see more frequent, smaller wins. One of its most exciting features is the wild: a multicolored star symbol which expands to cover the reel and locks in place for up to three respins, giving more chances to potentially win.

3. Divine Fortune Megaways

When NetEnt released the Divine Fortune progressive jackpot slot in 2017, it grabbed players’ attention with the chance to win millions of coins. Then in 2020, the developer brought us Divine Fortune Megaways. While the game has been reduced from a high to medium variance with an RTP of 96.09%, fans of the original game wasted no time spinning the reels of their favorite Divine Fortune title. This time, though, the Megaways engine is in play – which means that instead of 20 ways to win, you now have 117,649 ways to win (and many more chances to hit the jackpot!) Divine Fortune Megaways has continued to delight slot enthusiasts and we’re predicting that the title’s popularity is going to keep climbing through 2022.

4. Gonzo’s Quest

This is another NetEnt creation that keeps making it onto the “most popular slot” lists year after year. This is thanks to the superb design work that instantly transports players to a lush, mythical jungle and the long-lost city of Eldorado – with the humorous Gonzo hanging out at the side of the reels and reacting to the action taking place in the game.

The most exciting feature of Gonzo’s Quest has to be the cascade reel mechanism. This uses software to activate video animation that allows current symbols to disappear and be replaced by a whole new set of symbols, giving players more chances to win when this feature is triggered. The 5×3-reel slot has 20 paylines and an RTP of 96%.

5. Wheel of Fortune

IGT’s Wheel of Fortune is a firm favorite at BetMGM. This online slot machine offers players something that’s a bit different from the usual 5×3-reel game. Reels 2 and 4 have 4 rows, while reel 3 has 5. This presents players with a whopping 720 ways to win! With an RTP of 96%, most wins during standard play have a lower value. But with 250,000 coins up for grabs, the jackpot is worth playing for.

6. Guns N’ Roses

Inspired by the hugely popular 1980s heavy-metal rock band Guns N’ Roses, this NetEnt online slot brings the band’s unique aesthetic to the reels, backed by a cracking soundtrack that gives you a front-row seat to all the action. Winning paylines are cheered by an adoring audience, and a left-of-screen Set List pop-up box gives you the chance to choose from five of Guns N’ Roses hit songs to play along to.

The game has a 5×3-reel format and 20 paylines and there’s a wager to suit most pockets. The slot’s RTP is 96.98%, which means big wins are generally likely to occur when playing the bonus features.

7. Thunderstruck II

Microgaming hit a home run when it brought the original Thunderstruck slot to market. The second title in the series has been even more popular. The gorgeous graphics and mythical symbols bring to life a time when the Nordic gods ruled over humanity – but they’re not the only standout features of this title.

While the 5-reel design is the same as the first installment, this time around, there are no longer traditional paylines. Instead, players are given 243 ways to win without having to specifically activate paylines.

8. Jin Ji Bao Xi Endless Treasure

While 88 Fortunes remains one of our top-played online casino slots years after its release, Jin Ji Bao Xi Endless Treasure is a newer release from SG Digital that takes the much-loved Oriental theme to the next level. This game has become widely popular in land-based casinos from Las Vegas to Macau with online players joining in on the fun in 2021.

Packed with bonuses, Jin Ji Bar Xi is a progressive jackpot that boasts stunning visuals and 243 Paylines. The traditional 5×3 grid features an RTP of 95.73% and the chance to win up to 200,000x the stake. Symbols include a phoenix, tiger, tortoise and koi (all in gold) alongside other lower-value Chinese animals, making for a rich and authentic slot experience.

9. Assassin Moon

This year, the secret agent theme shot to popularity among slot enthusiasts after the successful 2021 release of the latest James Bond film No Time to Die. Assassin Moon, released towards the end of 2020, was just in time to transport players to a luxury villa where they’re given a top-secret mission. This unique slot game by Triple Edge Studios offers a high volatility and the chance to win up to 12,500x the stake on a single spin, making this mission one for the brave. With a smooth electro soundtrack in the background and expensive cars, casino chips and a sniper on the reels, Assassin Moon takes players on a seductive spin with a number of bonus features including a Win Booster mechanic and HyperHold bonus along for the ride.

10. Extra Chilli

Big Time Gaming knows you like it hot, which is why they ushered in 2021 with Extra Chilli. If 117,649 ways to win and a grand prize of 20,000x the wager is your kind of spicy then you’ll want to join the thousands of players who are spinning the reels on this extra hot Megaways slot. Do you prefer green or red chilis? You’ll find both when playing Extra Chilli, along with extra reels, free spins, feature drops and more. A blazing 96.82% RTP and a medium volatility are there to support your gameplay. Players will also enjoy the cascading reels and vibrant Mexican market vibes.

Play all the top slots at BetMGM

Enough reading; it’s time to spin the reels! You can play all of 2021’s top slots right here at BetMGM. Just register with us and you can check them out at your leisure. When you play casino online games with BetMGM you’re spoilt for choice. We’ve got everything from traditional table games to immersive live dealer table games, which bring all the action of a real-life casino to the comfort of your home!

Actress Vanessa Hudgens flipping casino chips next to the text "The King of Casinos"
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Our BetMGM editors and authors are sports experts with a wealth of knowledge of the sports industry at all levels. Their coverage includes sports news, previews and predictions, fun facts, and betting.

Our BetMGM editors and authors are sports experts with a wealth of knowledge of the sports industry at all levels. Their coverage includes sports news, previews and predictions, fun facts, and betting.