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Casino slots online – the most popular games of 2021-2022

Starburst slot

You probably know that there is a very wide selection of casino slot games that you can play online. However, which of these would be the most popular? With such a huge offering of casino slots available, it could be useful to know which ones are most liked by players, right? Well, we looked at the stats of people who play casino online slots at and elsewhere to round up the 5 most popular online slots as of 2021 and forecast for 2022. Let’s begin!

Thunderstruck 2

Inspired by Scandinavian mythology and the God of Thunder Thor, the creation of Microgaming has its roots set all the way back in 2003. Back then, the first iteration of the game came out and seven years later, in May of 2010, Thunderstruck 2 was launched across many online casinos.

The numbers for this game are quite decent: RTP is around 96.65%, there are 243 paylines, and a total of 121 500 prize combos with a maximum multiplier of 8 100x. If you uncover three Thor’s hammers during your play, you’ll enter the legendary Great Hall of Spins which grants free spins. The Bonus round also offers awesome prizes.

Book of Ra

There probably isn’t any other game at casino slots that would be as popular, as Book of Ra. Even though it has a little smaller RTP than other games at around 95.1% and just 10 paylines, this doesn’t stop players from being engulfed in the mystique of Ancient Egypt and the legendary Pharaohs.

Developed by Novomatic and launched all the way back in 2008 this video slot game has many exciting features including great multipliers, free spins, a wild card symbol, a scatter symbol and so much more. Each year it is either in the TOP 5 or TOP 10 of most-played video slots.

Goblin’s Cave

Developed by Playtech, Goblin’s Cave is a game with a huge RTP ratio of around 99.32% (in reality, it varies between 94.5% and 99.32%). You can get instant cash wins in the bonus round and have 3 reels, 3 rows with 3 paylines in total. Even though it was launched almost a decade ago, in 2012, it still ranks as some of the most popular casino slots out there.

9 Pots of Gold

Referring to the luck of the Irish, the development of Microgaming has a RTP of around 96.2%. It isn’t the best, nor it is the worst. Revolving around Irish tales, this game has a certain appeal that a lot of players will and can appreciate. There are win multipliers, the game is fairly easy to understand and the maximum win is at 2,000x of your initial stake. There are also free spins that are quite easy to win.


Just as Book of Ra, Starburst from Netent has an almost cult-like following. The low volatility of this game and a RTP of approx. 96.1% are decent enough, but the low variance and no free spins can show some downside. Maximum winnings are capped at 5k coins or 5k EUR, but it’s easy to play and you often get free spins as promos or bonuses from casinos!

So, these are the most popular video slot games of 2021 and 2022. If you want to find more video slots based on cards as well as get more familiar with the card games online, visit to get access to a vast database of fun facts and strategies about slots.

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