Best Online Slots 2021

Home » Best Online Slots 2021

Play the best online slots in 2021 at top rated online casinos! Register and claim lucrative welcome bonuses and free spins on desktop or mobile.  

Best Online Slot Games – The Ultimate List!
Age of Asgard Slot Review 2021
3.0/5
Age of Asgard Slot Review 2021
Age of the Gods Slot Review 2021
4.0/5
Age of the Gods Slot Review 2021
Aztec Magic Deluxe Slot Review 2021
4.0/5
Aztec Magic Deluxe Slot Review 2021
Big Bad Wolf Slot Review 2021
3.0/5
Big Bad Wolf Slot Review 2021

The Comprehensive Online Slots Guide 2021

On this page, we will help you find top rated slot games to play. Find out which slot titles offer the highest RTP, payout rates, and the largest number of free spins. Don’t waste your time trying to find quality slot machines, as we researched more than 20,000 slot games and handpicked the absolute best titles available in 2021!

Our online slot reviews will help you find out everything you need to know before you start playing. We cover all the crucial aspects of every slot machine and unveil all secrets that will help you maximize your chances to win at your favorite online casino.

Before you start reading this article and browse through our top rated slot games list, you should pick one of the best slot sites we have checked for you. All of those operators on our list are licensed, safe, and fair to their players. Also, they offer a vast selection of various casino games that will provide you a fantastic extended playing experience!

The Best Slot Sites to Play with Real Money 2021

Get up to:
€200 + 60FS
on 1st deposit
€12 credited for every €10 deposit, up to €200 (or 1 BTC). In addition you receive 20 Free spins weekly, for 4 weeks.
2 games
5.0 rating
5.0
T&Cs Apply
New customers only

Once the player receives the bonus in order to withdraw the winning coming from this bonus he/she has to wager the deposit amount 50 times.

*In order to fulfil the wagering requirements, both bonus and real money funds can be used, however, please note that real money funds will be used first. Winnings from all bets are credited to the bonus account while the bonus is active.
Get up to:
€500 + 200FS
on 1st deposit
€10 credited for every €10 deposit, up to €500.
2 games
5.0 rating
5.0
T&Cs Apply
New customers only

Cras in nisi id turpis cursus vulputate. Aliquam at sapien non tellus congue efficitur. Nam scelerisque quam quis link turpis pellentesque, in placerat.

*Integer porttitor malesuada ante, nec aliquet dui pellentesque sit amet. Fusce non pretium lacus.
Get up to:
€200 + 80FS
on 1st deposit
€12 credited for every €10 deposit, up to €200 (or 1 BTC). In addition you receive 20 Free spins weekly, for 4 weeks.
2 games
4.8 rating
4.8
T&Cs Apply
New customers only

Once the player receives the bonus in order to withdraw the winning coming from this bonus he/she has to wager the deposit amount 50 times.

*In order to fulfil the wagering requirements, both bonus and real money funds can be used, however, please note that real money funds will be used first. Winnings from all bets are credited to the bonus account while the bonus is active.
Get up to:
€500
Welcome package
€10/€15 credited for every €10, up to €500.
3 games
4.8 rating
4.8
T&Cs Apply
New customers only

The promotion is open to all players who can lawfully place real-money wagers on the EnergyWin website and are aged 18 years or over and only have one account open with EnergyWin, as per the General Terms and Conditions found on site.

*In order to redeem each Welcome-Offer Bonus, you must wager the bonus and amount deposited and assigned to the bonus 35 times.
Get up to:
€600
Welcome package
€10 credited for every €10 deposit, up to €600.
2 games
4.5 rating
4.5
T&Cs Apply
New customers only

Claim your 100% Welcome Casino Bonus AND THEN place your 1st deposit. The Welcome Casino Bonus can only be wagered on Slots and Live Casino games of Netent, Playn'Go, Playson, Pragmatic Play, and Microgaming, and the wagering contributions towards the bonus requirements are: 1. Slots: 100% (except Netent) 2. Netent slots: 50% 3. Live Casino games: 25%.

*Casino Bonus AND Deposit are subject to wagering requirement of forty (40) times.
Get up to:
€500 + 200FS
on 1st deposit
€10 credited for every €10 deposit, up to €500 + 200 Free Spins.
2 games
4.5 rating
4.5
T&Cs Apply
New customers only

Cras in nisi id turpis cursus vulputate. Aliquam at sapien non tellus congue efficitur. Nam scelerisque quam quis link turpis pellentesque, in placerat.

*Integer porttitor malesuada ante, nec aliquet dui pellentesque sit amet. Fusce non pretium lacus.
Get up to:
€500 + 200FS
on 1st deposit
€10 credited for every €10 deposit, up to €500.
3 games
4.3 rating
4.3
T&Cs Apply
New customers only

The promotion is avaiable to all registered users at ZetCasino. In order to obtain bonus, you need to contact supoort via Live Chat or e-mail: support@ZetCasino.com

*The wagering requirements at ZetCasino are 30 times the initial amount of deposit and bonus received. The wagering requirements of winnings from free spins are x40.
Bonus up to:
€1.600 + 100FS
Welcome Bonus
* New customers only. Match bonuses based on first, second, third and fourth deposit of €10 or more.
1 game
4.3 rating
4.3
Bonus up to:
100€ + 200FS
Welcome Bonus
* New customers only. Match bonuses based on first deposit of 10€ or more.
2 games
4.3 rating
4.3
Get up to:
€500 + 200FS
on 1st deposit
€10 credited for every €10 deposit, up to €500 + 200 Free Spins.
3 games
4.3 rating
4.3
T&Cs Apply
New customers only

Cras in nisi id turpis cursus vulputate. Aliquam at sapien non tellus congue efficitur. Nam scelerisque quam quis link turpis pellentesque, in placerat.

*Integer porttitor malesuada ante, nec aliquet dui pellentesque sit amet. Fusce non pretium lacus.

Top Rated Slot Games

In this section of our article, you will find a list of the best slot machines to play online. Although every casino player has their preferences regarding slot games, there are several essential aspects of every slot title that distinguish top slot games from average ones.

We will reveal all the essential information of selected slot games, and you will be able in one place to learn about different slots RTP and paylines, the game’s volatility, bonus features, and more. On top of that, on our website, you have an option to try all of these games for free!

When you choose which slot games you will play, one of the most important things is to understand that there are several different types of slot machines. Those differences may impact your playing experience, as different slot titles require different playing approaches.

Here you will find the list of the most popular types of slot machines:

Classic Slots – This type of slot game is the most basic type, and they are sometimes called “the fruities.” They are simple games with limited extra features, and usually, they come with a three-reel or five-reel setup. There are many modern adaptations of Classic Fruit Slots, and all the best slot sites offer this kind of game in free and real money mode.

Video Slots – Video slots are a trendy type of slots nowadays. They are coming in all shapes and sizes and give the players more chances for a win. The most significant advantages of video slots are that they have many additional features, such as bonuses, free spins, and multipliers, and that they give the players a unique playing experience.

3D Slots – Another type of modern slot machine. These slots are similar to video slots, except they are animated and can interact with players during the game. This type of slot is an exciting addition, as they are exciting and fun to play.

Progressive Jackpots – This is one of the most popular types of slot machines, as it can give players huge wins. Every time any player in the world plays a specific progressive jackpot game – the jackpot increases. Once when the lucky winner manages to win a jackpot, it resets and starts again.

On our list of best online slots, you will find those different types of slot games, but they all have one thing in common. They are fun, easy to play, and they are all available at the best slot sites in the demo and real money mode.

1.Mega Moolah

Without any doubt, Mega Moolah is the most popular progressive jackpot game worldwide. The main reason for its popularity is the fact that this Microgaming slot in the past gave several huge jackpots to the lucky winners. With a mediocre RTP of 88.12%, this game is created for those players who dream big. If you prefer to play top slot games with higher RTP, then you should check other games from our list.

2.Thunderstruck II

Another Microgaming title in our list, but with an excellent RTP of 96.65%. Keeping in mind that this is a sequel to a popular game, the developers made an extra effort to make it even better. It is a Viking-themed five-reel slot game, with 243 paylines and medium variance. If you want to start spinning reels on this interesting slot game, you should check our list of best slot sites, or try it in demo mode, here.   

3.Starburst

NetEnt developed Starburst with just one thing in mind. They wanted to have a beautiful looking yet easy-to-play slot game with a solid RTP and low variance. As a result, we can safely say that they did a fantastic job with Starburst. The RTP stands at 96.10% flat, and players have several exciting bonus features, so it is not strange that this title became popular among slot enthusiasts.

4.Dead or Alive II

Dead or Alive II was one of the most anticipated slot titles ever, and NetEnt managed to make a fantastic game. This slot title is regarded to be one of the top slot games in the industry at the moment and has a lot of fans. With a solid RTP of 96.80%, the only downswing of this game is its high volatility, which is something high-rollers like.

5.Book of Ra

This slot game is regarded as one of the best slot machines to play online, although it was released a long time ago (2004). The Book of Ra was developed by Novomatic game provider and has a low RTP of 88.12%, but it manages to keep players happy and entertained with its slick gameplay and a lot of bonus features. If you want to try Book of Ra for free, you can do it on our site.

Pros and Cons of Playing Slots Over Other Casino Games

Top-rated slot games are extremely popular among casino players, as they are easy and interesting to play. But, to be honest, there are the easiest and most straightforward games to play in online casinos. All you need to do is to set your stake and to start spinning the reels.

Some other casino games, such as roulette and blackjack, are also not complicated, but they require a player to have a specific skill set to play effectively. While playing top slot games, you don’t need to have any particular strategies or skills. You just need to have a bit of luck, and you can expect to win nice sums of money.

FAQ   

Which online slots pay the best?

We at TopRated.Casino test every slot and give our readers objective reviews of every slot title. We think that it is best to find slots with high RPT and medium volatility, as those titles give you the best payout ratio.   

Are online slot games rigged?

Online slots developed by respected game providers can’t be rigged. Many third-party companies regularly test those slots. So, to be safe, you should always play your favorite slot games at licensed and respected online casinos.   

Which are the most famous slot titles of all time? 

There are many famous slot games in the casino industry. Still, most certainly, the most popular progressive jackpot is Mega Moolah, while one of the best video slots ever is slot game Starburst. Of course, those are just some of the best slot machines to play online, as there are many other excellent titles.