Best online slots & Best slot sites 2022

Netent launched Gonzo's Quest in November 2013, and despite all that time, this “ancient civilization” themed slot is still on most sites' best casino slots lists. While there are many reasons for this, the most important thing that makes this 20-line game famous is its use of the "Avalanche Reels" mechanic. This feature simply works like this:

• When a win is made, all symbols included in that combination disappear
• New symbols appear in place of disappearing symbols, without the player having to make a new spin
• These new symbols can also trigger a new winning combination

So if you are lucky enough, you can win multiple times in a row with a single spin. Moreover, Gonzo's Quest has tied this feature to a multiplier system: when Avalanche Reels triggers a new win, the multiplier also increases, and the payout gets bigger. The game also has classic slot features: if you land three of the "free fall" symbols, you can win 10 to 20 free spins. You can trigger this feature multiple times along with the 15x multiplier. Gonzo's Quest has an RTP of 95.97% and offers MED-HIGH volatility, meaning the main game has medium and the bonus feature has high volatility. The game runs on web browsers and works on all mobile devices.

There is a simple reason why Mega Moolah is one of the top slot games of all time: it pays big. And when we say “big”, we mean it: this game can make you a millionaire. In fact, it has the World Record of being the slot game with the highest payout: €17,879,645 ($20,062,600, £13,209,300). That’s why all of the best slot sites offer you the chance to play it. Mega Moolah is developed by Microgaming, and while it was released in 2006, it is still the world’s biggest online progressive jackpot, even after all those years.

Mega Moolah is based on “wildlife”: it has 25 betlines, medium volatility, and 88.12% RTP. While this is a low value, remember that this is a progressive jackpot: their RTPs are always lower than video slots. There is no maximum win limit in this game: the money in the jackpot keeps increasing until someone wins, and sometimes it reaches millions. In addition to this jackpot, you can still win multipliers (up to 600x) and 15 free spins with a 3x multiplier. Statistics show that someone wins the jackpot every 6 weeks on average, and maybe it is your time to win. You can play on iOS or Android without a download.

2013 was a very productive year for Netent, as two of its famous slots were launched this year, which helped the studio to enter almost all the best online slots lists: Gonzo's Quest and Starburst. The studio tried new things with both games and managed to create some of the best slot machines to play. Starburst may seem like a simple game with a space theme at first glance, as it only has 10 lines and does not include the "free spins" bonus. However, this is a deliberate choice, because Netent used the "re-spin" feature, which offers much more dynamic gameplay.

The wild symbol of this game has "expanding" and "sticky" features. This means that when it appears on the screen, it expands to cover the entire reel and triggers a re-spin. It doesn't disappear on the screen (sticky) during this spin either. With this feature, you can trigger three consecutive re-spins. Although there is no separate free spin round, you can win even more with this feature: re-spins allow you to win up to 50,000 coins by paying multipliers. The RTP of the game is 96.09% and it has low volatility, so the payout frequency is quite high. You can play on mobile without a problem.

Among the most popular games of the best slot sites, you can always find a slot with the theme of ancient Egypt: this is among the most popular themes. As might be expected, some studios are more adept at using this theme, and Green Tube (Novomatic), known for its classic slots, is the best: the company has dozens of games with an ancient Egyptian theme, most of which are on the best slots to play lists. Book of Ra, which was released in April 2008, was one of these games, and a modernized version called "deluxe" was developed later due to the interest it received: this version works on all mobile platforms.
The modernized version also has a higher RTP (95.10%) and high volatility. However, it still has 10 lines, the same symbols, and the same payouts. You can trigger 10 free spins (with a 2x multiplier) by landing three scatter symbols anywhere on the screen. During this bonus round, one of the symbols becomes “expanding”, meaning it can feel the entire reel it landed on. There is also a risk game that can be manually activated after each winning spin, which gives you the chance to double the payout. The maximum win of Book of Ra Deluxe is 10.035x total bet.

Thunderstruck II is one of the best slot machines to play if you enjoy classic video slots with exciting & profitable features. Microgaming has released this game in May 2010, so it works on any device with a browser – no download is needed. As the name suggests, it is the sequel to the famous slot of the same name (which was among the best slots in the early 2000s) with “upgraded” features. This time, you get 243 paylines, high volatility, and an RTP rate of 96.65%. The theme is “Scandinavian Gods”, as you can guess.

You can trigger the “Great Hall of Spins” feature by landing three “Bonus Hammer” symbols on the reels. This is the free spin round of the game, and it comes with four different bonuses:

• 10 spins with a 5x multiplier
• 15 spins with wild symbols on the middle reel
• 20 spins with random multipliers (up to 6x)
• 25 spins with a 5x multiplier

You can use these features after triggering the previous one at least 9 times, i.e., after using “10 spins” nine times, you are allowed to advance to “15 spins”. The maximum win is 2.4 million coins.

UggaBugga looks quite different: this is a slot with 10 reels, instead of the usual 5. There is a total of 10 paylines and a win can happen on any of them: all you need is to land three same symbols next to each other. There is also a “hold and respin” feature which resembles video poker games. The maximum payout is a 1.000x line bet and the volatility is low. In other words, you can expect to win pretty often.

This is a classic video slot with 10 lines and medium volatility. It's not just the high RTP rate that makes it one of the best casino slots: this game features two different modes, "hi-roller" and "normal". When you activate the hi-roller mode, the min/max bet limits increase, but the RTP also goes up to 99% (it is only 96% when this mode is not on). In the bonus round of the game, you have to choose between a single wild symbol and 15 spins or two wild symbols and 10 spins.

This is one of the top slot games of Netent: since its release in 2013, the game gained the interest of many players due to its high RTP and interesting theme (vampires). It comes with low volatility and 25 betlines. The maximum win is 900x total bet, which can be won only in the free spins round. Speaking of which, you can trigger this feature by landing three “Vampire Bride” symbols: doing so will award 10 free spins. These symbols will also award up to 100x total stake if you manage to land more than three.

What makes this game one of the top online slots is its “Jokerizer” mode. This is actually a classic fruit slot with 10 lines, and its RTP is actually 88.80% during the normal gameplay. However, any win triggers the “Jokerizer Mode” automatically and asks you to increase the bet amount until you win 1.000 coins. If you agree, any two Joker symbols that appear anywhere on the reels award up to 6.000 coins while this mode is active. This feature increases the RTP to 106%, and the average of both values is 98.00%. In other words, make sure to use this mode.

Starmania was one of the first games of Nextgen and it is still among the best online slots you can play. It only has 10 paylines but they pay both ways (not only from left to right). You can win up to 500x total stake and take advantage of 10 free spins with 30 extra wild symbols. The volatility is low for the main game and medium for the bonus round. The special symbols of the game also pay with multipliers, between 50x and 100x.

White Rabbit was once the most popular game at the best slot sites, especially the UK online casinos. This is mostly because it is one of the original slots that made the “Megaways” feature famous: this game has dynamic paylines, which can go up to 248.832 per spin. The fact that it also has high volatility makes the overall payouts quite satisfying: you can win up to 6.220.000 coins in this game. There are random multiplier Wilds that will further enhance the payouts and during the free spinbonus, the reels themselves extend. White Rabbit is still one of the best casino slots to play, especially in the “Megaways” category.