New Slot Games 2021: Play at Top Online Casinos

Casino game developers release new slot games almost every day. Many of them are mobile-optimised, with top-notch graphics and even extra bonuses to get you excited to play them. Read our expert review to find the most exciting new slots you should be playing, and learn how to pick the best one!

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Our Favourite New Free Online Slots of 2021

Many times when you land in a casino, you'll see a “new slot games” section – and it always seems to be full of new exciting titles. That’s because casinos and software providers are working round the clock to churn out many new, inventive real money slots to satisfy the needs of punters.

This leaves us with the question, “where can I find the best new slots of 2021”? Wonder no more, as we bring you the 5 best slot games that you should be playing this year!


Gordon Ramsay Hell's Kitchen™ Slot

Gordon Ramsat Hells Kitchen Slot

NetEnt, being one of the leading casino game developers, have designed this stunning game with 5 reels, 20 fixed paylines, a 96.07% RTP, a 1,000x maximum win and a medium volatility, inspired by the world's most famous chef, Gordon Ramsay.

Gordon's tasty cuisines make up the symbols with the scatter symbol activating the Team Challenge Free Spins bonus game, in which you choose whether to back Team Red or Team Blue.

Should your team win, Gordon’s Bonus Game begins, where you choose different restaurant menus from a grid that can award you payout multipliers or bonus coins.

You’ll also find unique wild symbols of chef’s knives, plates and pots which can substitute non-winning symbols to make winning combinations. Overall this slot is pretty exciting, but even more so if you're a fan of the Gordon Ramsay: Hell's Kitchen TV show.

RankSlot NameRTPGame DeveloperPlay
Gordon Ramsay Hell's Kitchen™
Cashimashi Casino 100% up to €200
SlotsMillion Casino Happy Hour Deposit Fridays
Mr Green Casino Double Deposit + 200 Free Spin

Book of 99

Book of 99 slot screenshot

Perhaps there has been no new slot more anticipated than Relax Gaming's Book of 99. Themed after ancient Greece, this new online slot game has 5 reels, 10 paylines, a flexible 0.10 – 100.00 coin range, a high volatility and an amazing RTP of 99%.

The Book symbol acts as the wild and the scatter, which can trigger two free-spin bonus games.Then, should you get three scatters on the reels at once (or collect 99 scatters while playing), this will trigger a bonus round of 10 free spins.

Its unique “bonus collection” feature, along with the 99% return of this high rtp slot, promises great potential for this slot and future titles like it. Try your hand at winning big with one of our recommended Book of 99 casinos below!

RankSlot NameRTPGame DeveloperPlay
Book of 99
99.00%Relax Gaming
Frank Casino 150% up to €750
Dream Vegas Casino €2500 Welcome Bonus & 50 Spins
Casumo Casino 100% up to €300 + 20 free spin

Power of Thor Megaways™

Power of Thor Megaways Slot

Book of 99 may have a high RTP, but Power of Thor Megaways™ blows the competition away with its 117,649 ways to win and 5000x max win. However, Power of Thor MegawaysTM also has a fair RTP of 96.55% on its 6 reels, and the audio and graphics for this brilliant game from Pragmatic Play are exquisite.

Thor's hammer, Mjolnir, will convert all the symbols below to the wild symbol, while the scatter symbol unlocks the free spins mode with an ever-increasing multiplier.

This is why it’s an exciting new Megaways™ slot that many slot lovers have been looking forward to.

RankSlot NameRTPGame DeveloperPlay
Power of Thor Megaways™
96.55%Pragmatic Play
KatsuBet €500 Welcome Bonus + 100 Spins
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Slingo Starburst

Slingo Starburst slot logo

This low volatility game by NetEnt, in conjunction with Slingo Originals, is stacked to the brim with exciting features, graphics, sound effects, 0.10 – 100.00 coin range, and a 96.50% RTP.

In the first segment, you can match numbers in the 5×5 bingo layout with numbers in a slots reel underneath, or with a Super Wilds or Starburst Wilds to cross off any number of your choice. These numbers are replaced by stars and a complete row, column or diagonal of stars is a Slingo.

You can be the star of the casino if you get the 1,500x max win on Slingo Starburst!

RankSlot NameRTPGame DeveloperPlay
Slingo Starburst Slot
96.50%NetEnt and Slingo Originals
PlayOJO Casino 50 Free Spins on first deposit
Betsson Casino 100% up to €100
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Wild Flower

Wild flower slot screenshot

Big Time Gaming has a knack for high volatility slots with awesome features, and the Wild Flower slot is another great example of this. This new slot game has 6 reels, 4,096 ways to win, 96.52% RTP and a 46,100x max win in the base game.

The key features of this game are the Flower Wild, Ice Wild, Yellow Moon Scatter and the Red Moon Megascatter, which gives you free spins and multipliers up to 800x your bet.

In fact, in the bonus game, you can get up to 114,000x your bet amount! This is perfect for high rollers looking to win big on a sizable bankroll. Check out the YouTube below:

RankSlot NameRTPGame DeveloperPlay
Wild Flower Slot
96.52%Big Time Gaming
Videoslots Casino 100% up to €200
Betsson Casino 100% up to €100
888Casino Up to €1500 Welcome Bonus

How to Choose the Best New Slot Games

Choosing the best new casino slot games needs more than you guessing when a slot game will hit – it's a decision that comes with the right combination of mobile compatibility, RTP and volatility, as well as potential and slot-based casino bonuses.

Mobile Compatibility

It can be quite uncomfortable if you have to sit down at your PC every time you want to play casino games. This is why you should ensure that you can play a new online slot game on your preferred device at mobile casinos, giving you convenient and lag-free mobile playing sessions on the go.

Theme, Graphics and Soundtrack

You should find the right aesthetic that suits you with regards to the theme, graphics and sound effects. It’s important to be careful with your theme choice, though. This is because branded slots and TV slots, for example, have low RTPs. However, you can still win big on low RTP slots – it just all depends on luck.

Bonus Promotions for New Online Slots

In addition to being one of the most important casino features in general, good bonuses and promotions can also help you beat the house edge with new slots.

In fact, some new slot games even have specialised casino bonuses that come with their release, most often free spins. However, you should always read the wagering requirements properly to make sure you know what you’re signing up for.

RTP and Volatility

The RTP and the volatility of new casino slot games tell you how much you can expect in the long run and the size and frequency of wins, respectively. High RTP slots tend to have 97% or higher return to player, which makes the above-mentioned Book of 99 a great choice.

As a general rule, the lower the RTP, the higher the house edge; since statistically less money is being returned to players, it’s important to see how this can affect your gaming over time.

Additionally, be sure to note the volatility of any new slot games you play as well, and choose according to what you prefer – little and frequent payouts (low volatility) or large and sporadic payouts (high volatility).

Special In-Game Bonus Features

A lot of slots have their own form of “bonuses”. This involves wilds, scatter, cascading reels, etc. These are great for new slot games gambling because they can directly increase the frequency and/or limit of the wins you can get on these games.

For example, Wilds will substitute for non-winning symbols in order to create a payout, whereas Scatters will give you free spins or bonus games to further your chances of winnings.

Top New Slots Software Providers

This is probably the most important to look out for. A reputable software provider means a licensed, fair game with great in-game features, device compatibility and even release bonus offers sometimes.

Some of the major names in the industry include the aforementioned NetEnt, Pragmatic Play and Big Time Gaming, as well as Play’n GO and Yggdrasil.

Jackpot or No Jackpot?

Some slots have multiple jackpots that accumulate progressively over time. Jackpot slots provide an opportunity to cash out massively; however, they are difficult to get.

So it's wise to choose a jackpot slot with a rewarding base game. This is important because while you can look forward to a slot with a great jackpot, the odds of winning major prizes are still rather low.

Therefore, you should look for a new jackpot slot that gives you a perfect cocktail of paying out well while keeping you entertained for hours. Take a look at our guide to progressive jackpots slots to find your favourite!


How to Win at New Slot Games

You should know that winning is not guaranteed with new slot games gambling or any other kind of gambling. But here are some tips that can help you have a great time playing games, and a chance at beating the house edge.

  • Select the right casino with a valid license, generous bonus offers, convenient banking methods and reliable customer support.
  • You should set aside a fair sum for your bankroll that will give you enough playing time. However, this is not a call to gamble irresponsibly – think of your bankroll as an investment.
  • Based on your bankroll and the slot’s paytable, volatility and its RTP, you should develop a solid slot strategy for how much you will bet on each spin.
  • Cash out any winnings regularly, so that you don't end up chasing losses or stretching yourself too thin.
  • Practise playing new free slot games in the demo mode at free play casinos. This is always a useful activity, since it helps you understand the payout frequency first-hand, without risking any real money.


New Slot Games Conclusion

Newly-released slots can provide a refreshing take on game design, gameplay and payout. However, you must make sure that you're not walking into a publicity trap by throwing money at an old game in new clothes.

So consult our top lists to find new online slots with great in-game features, plenty of entertainment value, high RTP and real money prizes. Then, once you’ve found one that catches your attention, choose your favourite from our recommended new slot casinos to start playing today!


New Slot Games FAQs

❓ How do I find out about new slot game releases?

Right here on our site! We continually update this article with the newest slots of 2021. But we go a step further by filtering out all the noise, reviewing only the best new slots and recommending great sites where you can play them.

❓ Can you really win money playing slots online?

Absolutely. People have won some of the biggest million-dollar payouts in casino history while playing online slots with progressive jackpots, such as Mega Moolah.

❓ Do new slot games have better payouts?

No, there is no hard-and-fast rule that new slots pay better or worse. This is because every online slot has its own RTP (Return to Player rate), which reflects how much money is statistically given back to players over time. That said, Book of 99 is a great new slot game of 2021 with 99% RTP, so many punters are excited about potentially high and frequent payouts!

❓ Are new slots safe?

Yes, they are. You just have to make sure that it is developed by a reputable slot provider with a verified RNG (Random Number Generator), and that you're playing in a fully licensed casino as well.

❓ What website has the best new slot games?

There are several new slot games websites where you can enjoy brand-new titles to the fullest. We have listed our favourites in the recommended casinos list above, so be sure to check them out!

❓ Is there a trick to winning at slots?

No, there is no trick to ensure that you always win. However, you can implement slot strategies to focus on maintaining your bankroll and maximising your wins.

❓ Which slot games pay the best?

As a general rule, slots with high RTPs – 97% or higher – tend to pay the best. Just keep in mind that this is a statistic taken from millions and millions of simulated spins, and so it will not apply the same to every playing session – luck remains a major factor.

❓ What are the most popular online slots?

There are many slot games out there that are very popular, like Gonzo's Quest and Starburst. However, no one slot has a claim to the title of “best”, so we recommend you try out a variety of games to find your favourite!

❓ What is the best mobile app for playing slot games?

This depends on the casino you play at. Some of the casinos we've listed above have great mobile apps and mobile compatible websites for you to play at. If you love a casino, then you're likely going to love its mobile casino app as well – check out our favourite gambling apps and play on the go easily.




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