A picture showing a Norse God with the Thunderstruck 2 Logo
The Thunderstruck II Online Slot from Microgaming

Thunderstruck II Slot Review

Game Type:
Video slot

Microgaming was one of the first game providers to create quality slot games in the iGaming industry. The company that was started several years ago now offers a vast portfolio with lots of games appreciated by all players. Thunderstruck II is a follow-up of the first Thunderstruck game that was a huge success. It was released in 2004 and is still enjoyed by casino players from all over the world. The game consists of 5 reels and 3 rows, together, they compile 243 paylines. When you play Thunderstruck II, the RTP is set to 96.65%, a great number. With high volatility and a hit frequency of almost 1/3, you’ll undoubtedly get some wins. The max win is 8,000x your stake. Let’s find out more in our Thunderstruck II review below.

Last updated on September 2nd, 2022

Thunderstruck II Demo

Here is a demo of the online slot so that you can try it out before spending any real cash on it.

Thunderstruck II RTP and Wagering

The first Thunderstruck game to enter the markets was released back in 2004, almost 20 years ago. Since then, a lot has happened in the gaming scene. Due to this, Microgaming felt the need to update one of its most popular casino slots.

Thunderstruck II was released to enable gameplay from all devices as mobile slots were the new thing. It’s a slot that keeps most basic features from the first game with some exciting updates and great casino bonuses.

A screenshot of the Thunderstruck II base game
Thunderstruck II Base Game

Canadians trying the game will be able to win from the 243 paylines that the 5×3 grid offers. To create a winning combination, you’ll have to win from left to right, but only the highest win per way is paid.

Thunderstruck II offers players an RTP of 96.65% with high volatility. This means that it’s very generous in rewarding its players, as a matter of fact, the hit frequency is about 32% so you might win on every third spin.

Lucky players can get a maximum win of 8,000x the stake. The only way to get such a high potential win is through the Wildstorm feature, which is randomly triggered. We will discuss this in more detail below. The bet level ranges from $0.30 to the possible max bet of $75.

Symbols and Audio & Video Design

The graphics of the game are very basic. They have kept the slot very similar to its predecessor, and why shouldn’t they with the success it had? Less is more, as they say. However, the bonus features in the game certainly go for a more is more approach instead.

While enjoying the slot game, Thunderstruck II offers a soothing soundtrack reminiscent of old Viking-movie-soundtracks. As commonly experienced, the music intensifies when you enter the free spins features.

If you manage to get into the free spins bonus features, the colour of the symbols and the grid change depending on which type of Great Hall of spins feature you activate.

In the Thunderstruck II slot machine, you’ll come across a couple of known symbols that make up the game. The low-paying symbols are as follows: 9, 10, J, Q, K and A. Landing 3 or more of these can pay you anything from 0.2x your stake and upwards.

A screenshot showing the paytable for Thunderstruck 2 for the symbols A, K, Q, J, 10, 9
Thunderstruck II slot Paytable – Royals

The higher-paying symbols are Viking-themed with Thor being the most valuable symbol. First out is the Viking Longship, then Valhalla, where the gods meet, and you can land wins from it as well as from the gods Loki, Valkyrie, Odin and Thor.

Thunderstruck II also has special symbols featured, the Wild symbol doubles any win it creates and the Scatter symbol (Thor’s Hammer) will take you to the bonus features as well as give you wins.

A screenshot of the Thunderstruck 2 paytable for all the special symbols
Thunderstruck II Paytable – Special Symbols

During the free spins features, you’ll notice an extra symbol, the Wild Magic symbol. We’ll take a closer look at it further down.

Check the table below to see all payouts:

Max Win
3, 4 or 5 = 0.2, 1 or 2x stake
3, 4 or 5 = 0.2, 1 or 2x stake
3, 4 or 5 = 0.2, 1.2 or 4x stake
3, 4 or 5 = 0.2, 1.2 or 4x stake
3, 4 or 5 = 0.3, 1.33 or 6x stake
3, 4 or 5 = 0.3, 1.33 or 6x stake
Viking Longship
3, 4 or 5 = 0.5, 1.66 or 8.33x stake
3, 4 or 5 = 0.5, 1.66 or 10x stake
3, 4 or 5 = 0.66, 2.66 or 11.66x stake
3, 4 or 5 = 0.66, 2.66 or 13.33x stake
3, 4 or 5 = 1, 3.33 or 15x stake
3, 4 or 5 = 1, 3.33 or 16.66 x stake
Wild Symbol
3, 4 or 5 = substitutes for all paying symbols, pays 2.5, 6.66 or 33.33x stake
Scatter Symbol
Land 3 or more to activate free spins. 2, 3, 4 or 5 = 1, 2, 20 or 200x stake

Mobile Features

Thunderstruck II was freshly released to include players of all sorts. The first version was created in 2004, meaning an update was certainly in time. Microgaming slots are among the most popular slot games and Thunderstruck is one of the top ones. Therefore, the new release will include all features regardless of whether you’re playing from a mobile device or a desktop.

When playing Thunderstruck 2, make sure to keep your battery charged and your connection stable. Although graphics aren’t too advanced, they might still require quite a bit of your battery life.

Bonus Features

Thunderstruck II is famous for all the exciting features it has. With free spins and a Wildstorm feature and more free spins, anyone will get excited. It offers players several ways to win, not only from the regular base game.

The Great Hall of Spins feature has different types of free spins, all adapted to suit the player enjoying them. We’ll take a closer look at all the bonus features immediately.

Free Spin Feature

Most online slots have a bonus game with free spins that all players dream about. Thunderstruck II isn’t any different in that regard, it actually has 4 different types of free spins features.

To get into the bonus games, you’ll have to get 3 or more scatter symbols, Thor’s Hammer. Once you get it, you can get up to 4 options of free spins depending on how many triggers you’ve had. The different options are presented below.

A screenshot of the Thunderstruck 2 Great Hall of Spins showing the different types of free spins that are available in the slot game
Thunderstruck II – The Great Hall of Spins

Valkyrie Free Spins

The first option is the Valkyrie free spins, this feature gives you 10 bonus spins along with a 5x win multiplier. All wins during this free spin feature will be multiplied by 5. You may retrigger free spins while in-game as well.

Loki Free Spins

Loki bonus spins become available on the 5th trigger, these are quite lucrative as you get 15 free spins along with the Wild Magic symbols. The Wild Magic symbol appears on the grid on the third row. While there, they randomly turn symbols into wilds. Retriggering spins is still possible here.

Odin Free Spins

From the 10th trigger, you can activate the Odin bonus features. Here, you’ll get a total of 20 free spins along with the Wild Raven feature. The bonus feature activates when Odin’s Raven symbol appears and turns symbols randomly into 2x and 3x win multipliers.

Thor Free Spins

Lastly, is the Thor bonus spin feature. It’s available from the 15th trigger and rewards you 25 free spins and Rolling Reels. The Rolling Reels feature will remove all winning symbols when you land a winning combination, this in turn paves the way for more wins. Subsequent wins increase the win multiplier up 5x, 1 extra per win.

Wildstorm Feature

What’s really exciting about the Thunderstruck II slot machine is that the base game also has an extra feature to make things even more exciting. You don’t even have to enter the bonus rounds to have a chance of landing the max win.

If the Wildstorm feature is activated, you’ll see a grid where 1 to 5 reels will become fully Wild reels. Should you manage to be so lucky to get a full grid with 5 wild reels, you’d win 8,000x your stake.


Unfortunately, this game does not offer any kind of Jackpot. However, the potential 8,000x max win is high compared to other slot games. Keep in mind that you have a chance of winning if you trigger the free spins.

Thunderstruck II Biggest Wins

Thunderstruck II actually offers several ways to win big. As a result of this, we came across many reports of big wins. One player won as much as 1,210x his stake and others won over $40,000. Obviously, the amount won depends on the stake.

We believe there to have been some even bigger wins in this slot game. With so many ways to get the maximum win, or at least over 1,000x your stake, several players will have to get lucky.

Where can I play the Thunderstruck II online slot?

Here you have the best online casinos in Canada where you can play the online slot game.  

  1. $1500 Casino Welcome Bonus Package
    9.5 /10
  2. $1600 Bonus
    9.4 /10
  3. 88 Free Spins No Deposit Bonus and $1500 Deposit Bonus
    9.0 /10
  4. 100% Deposit Bonus up to $1000 + 200 Free Spins
    8.9 /10
  5. $10 No deposit Bonus + 111% Deposit Bonus + 111 Free Spins
    8.9 /10
  6. $777 Casino Bonus + 250 Free Spins
    8.7 /10
  7. $1000 Casino Bonus No Wagering
    8.5 /10
  8. $1500 Bonus + 150 Free Spins
    8.4 /10
  9. $2,000 Casino Bonus + 200 Free Spins
    8.0 /10
  10. 150 Chances to win $1 Million for $10 + $150 Casino Bonus
    7.9 /10


Summing up this Thunderstruck 2 slot review leaves us excited from the thrill. The game has plenty to offer and is super enjoyable. It’s no wonder the original game became such a success.

The 5 reels and 3 rows might look a bit dull at first, sure, the graphics could have been better. But in the end, who cares? What matters is the thrill while playing the game, and Thunderstruck 2 certainly comes with nearly unmatched thrill.

Getting big wins isn’t impossible, if you’re lucky you can win quite a lot even in the base game. The max win of 8,000x the stake surely requires you to enter either the Wildstorm feature or the free spins. But the high hit frequency and volatility spread out winnings in a nice way

Make sure to try this game to have a chance to enjoy at least one of the several bonus features. The online slot does its best to keep you happy, and an RTP of 96.65% surely proves that.

Stakes range from $0.3 to $75, so players of all sorts can afford a few spins here. Microgaming has come up with yet another success with the Thunderstruck II game. Try it out yourself, maybe you’ll make friends with Thor and reap all the profits!

Thunderstruck II FAQs

Here are the most common questions we get asked about this slot game in Canada. 

About the Author

Michael Vella

Michael has worked in media and publishing for the last 20 years. His first jobs in online publishing were at online tech sites focusing on Microsoft Networking, Security all the way through SaaS and Cloud technologies. In 2016 he started his online gambling journey and since then has worked at Betsafe, Royal Panda, and STS before joining the iBet Network team.

He has also worked as a freelance writer for a number of newspapers and magazines and has interviewed dozens of local authors and celebrities. For seven years he was also the Co-Editor of Shlock Magazine, an online magazine of short fiction.