Thunderstruck II

Our Review

Thunderstruck II

Thunderstruck II is a sequel to the 2010 Microgaming slot that took the industry by storm at that years iGaming conference. Despite the length of time this game has been around, the graphics have aged well and the game still draws interest from both new and experienced gamers. 

The Norse Mythology themed video slot has a wealth of bonus features on offer and plays at low volatility which brings frequent low-level wins. The 5 reel, 3 row, 243 ways to win slot is a classic for a reason and players can win big by matching 3 or more symbols from left to right on a single payline. 

Land the logo Wild and watch as it substitutes for other symbols to form a winning combinatiowhile securing at least 3 symbols that feature Thor’s hammer will trigger The Great Hall of Spins.


  • Slot Type: Video Slot 
  • Features: Free Spins, Wild Storm 
  • Progressive – No
  • Jackpot – Yes
  • Theme: Norse Mythology
  • Provider: Microgaming 
  • Release date: 2010 
  • RTP: 96.65% 
  • Volatility: Low
  • Paylines: 243 Ways to win 
  • Reels: 5 
  • Rows: 3 
  • Min/Max bet: $0.30 – $15 
  • Max Win: 8,100x 


  • 243 winning combinations
  • Great bonus features
  • One of Microgaming finest video slots


  • Takes time to hit the Great Hall of Spins

Themes and Audio-Visual Design

The userfriendly design with an iceblue backdrop will get your pulse racing as you spin the reels to win cash prizes and free games. Stunning Norse god symbols are pleasing to the eye while the original soundtrack gets you in the mood to stay and listen a while longer. 

The slot features five reels with 243 ways to win and a slew of bonus features. Keep your eyes peeled for symbols displaying the Thunderstruck II logo, Thor, Valkyrie, Loki, Odin, Raven, Mjolnir (Thor’s hammer), Longships, and the Rainbow Bridge, plus the standard 9, 10, J, Q, K and A symbols which complete symbol line up. 

  • 5x Thunderstruck II logo will net you 1,000 coins
  • 5x Thor pays 500 
  • 5x Valkyrie adds 450 to your bankroll 
  • 5x Loki pays 400 
  • 5x Odin adds 350 to your total 
  • 5x Rainbow Road nets you 300
  • 5x Longships will pay 250 
  • 5x Mjolnir nets you 200 

Paylines are fixed and always active while you toggle the coin values to play between $0.30 and $15 per spin. Winning spins are built on combinations of any of the symbols, however, scatters and wilds offer more bang for your buck. 

  • The Thunderstruck II logo is a wild symbol and can be swapped for all other symbols, except Mjolnir. Winning spins that include this symbol receive a 2x multiplier for that round. 
  • The Mjolnir symbols are key to entering the Great Hall of Spins, where players earn free spins with big multipliers. 

The visuals and original score make it very easy to see why this slot continues to feature on the most popular game lists despite how long it has been around. Microgaming is an old hand at creating memorable casino games and this one is way up on the charts as it appeals to a wide range of players.

Thunderstruck 2 Online Slot

Special Features

Special features are what turns this good game into a great one. The Wild Storm feature takes some patience but when it triggers, expect to be blown away with storm clouds and lightning bolts heralding the appearance of Thor himself gracing the reels to turn them all Wild.  

Simply land a winning combination with these wild reels to land as much as 8,100x your stake. 

This low volatility game comes with a theoretical return to player (RTP) of 96.65% and offers the players an opportunity to win cash prizes in a wide range of sizes. 

The Great Hall of Spins

To activate this bonus feature, simply land 3, 4 or 5 Mjolnir symbols to launch the bonus round where each of the 4 levels is hosted by a highpaying god symbolValkyrie ushers you through the doors first and awards you with 10 free spins where every win comes standard with a 5x multiplier. Of course, these free spins could be retriggered and lead to further wins. 

Once you have triggered the bonus feature a fifth time, Loki plays host to your 15 free spins and a Wild Magic Feature. This Wild Magic symbol randomly transforms into other symbols when it lands on reel 3. Two, three, four and five Wild Magic symbols will earn you 1, 2, 3 or 4 free spins respectively. 

Trigger the bonus round 10 times and say hello to Odin who awards you with 20 free spins through the Wild Raven feature. Ravens are incorporated into the reels and may randomly descend to boost symbols with a 2x or 3x multiplier. Land both ravens and celebrate with a 6x multiplier for that spin. 

Finally, Thor takes over once The Great Hall of Spins has been triggered 15 times and gives you 25 free spins with Rolling Reels. When the Rolling Reels are activated, they unlock further wins through the dissolving of winning symbols and random placement of new symbols for the chance at even greater wins. Each win is awarded a 2x, 3x, 4x and 5x multiplier with each Rolling Reel win and continues until the next free spin is triggered. 

Should you land 2, 3, 4 or 5 Mjolnir scatters during these rounds, you may be awarded a 1, 2, 20 or 200x multiplier when they land anywhere on the reels. 

The features blend seamlessly with the theme to create a wellrounded gaming experience where the excitement is kept at an alltime high while playing. 

How to play Thunderstruck II

Get started with Thunderstruck II by toggling the buttons to increase or decrease your bet value between $0.30 and $15. Once you’re happy with your stake per spin, hit that spin button to start your journey to winning. After you have a feel for the game, make use of the Autoplay feature to have the game spin automatically while you sit back and watch those wins roll in. 

Microgaming offers players a wide range of betting options to suit every budget. Newer and more reserved players will enjoy having the chance to spend a few cents while more experienced players will be more comfortable risking it all to maximise their chances of a big win. 

Reputable online casinos also encourage their players to set daily, weekly or monthly deposit limits to promote responsible gambling. Strategically considering how much you can afford to spend, will ensure that you can enjoy games of chance for a long time as a pleasant pastime. 

Experience Thunderstruck II on Mobile

The clean lines and userfriendly navigation of Thunderstruck II translate into a smooth and easy to use mobile experience. Players relish the opportunity to spin the reels using the convenience of their touchscreen and enjoy the fullscreen appeal of the game when played in landscape mode. 

Every player has a casino in their pocket thanks to the mobilefriendly innovations of Microgaming and only requires an Android or iOS smartphone or tablet with a steady internet connection to play casino games for real money while on the go.

How to Play Thunderstruck 2

The slot game features five reels, with 243 winning combinations and a slew of bonus features. The slot icons include a Thunderstruck II logo piece, Thor, Valkyrie, Loki, Odin, Raven, Mjolnir (Thor’s hammer), longships, and rainbow road, plus the standard 9, 10, J, Q, K and A symbols. Players can’t change the number of pay lines they play, but they can adjust the number of coins wagered per play, with coin sizes ranging from $0.30 to $15. Winning spins can be built on combinations of any of the symbols, but there are a few special combinations players should keep an eye out for:

  • The Thunderstruck II logo is a wild symbol and can be swapped in for all other symbols, except Mjolnir. When winning spins include the logo, all earnings for that spin are doubled.
  • The Mjolnir symbols are key to entering the Great Hall of Spins, where players earn free spins with big multipliers. There are four levels within the Great Hall of Spins, each represented by a different character. More on that under the Special Features section.

Graphics and Sounds

Graphics: Few games are more likely to get your adrenaline flowing. The reels are easy to see and understand, and the graphics for many of the characters are incredibly detailed and well done. The board is an icy blue color, and the graphics for pieces landed as part of a winning spin are pretty cool. The letter/number symbols explode amid a tangle of electric surges. The various characters each have their own reactions, too, with various zooms and pans within the symbol that let you know you’ve put together a winning spin.

Sounds: The sounds are the big sell here. The background music during regular gameplay is a little stale and quiet, but that only makes the transition into the Great Hall of Spins all the more exhilarating, as players are greeted by a blood-pumping guitar riff. Journeys into the Great Hall are a thing that should be celebrated and enjoyed, and even if you don’t come away with a digital pocket full of coins, you’ll at least enjoy the experience and atmosphere.


Some players — especially those who were fond of the original Thunderstruck — may be disappointed to find out there isn’t a true jackpot to be won on the Thunderstruck II slot. That doesn’t mean there aren’t big paydays to be found. Players can bring down up to 2.4 million coins with a lucky enough journey through the Great Hall of Spins, although that payday doesn’t come in one lump-sum winning, like standard jackpots.

Less Volatility: The bright side is that the Great Hall structure leads to less volatility. Players won’t have to spin dozens or hundreds of times before earning any semblance of a payday. The result is a steadier game that’s more fun to play for hours at a time.

Special Features

Okay, slot games have some cool features sometimes (e.g. The Dark Knight is featuring mini clips from the movie for some combinations), but nothing beats the Great Hall of Spins. You’ve been promised a breakdown of the Great Hall of Spins before, so here it is. Players can earn entry into the Great Hall of Spins multiple times, and as they earn more entries, they unlock different levels within the Great Hall, each of which has its own special features. There are four levels within the Great Hall of Free spins, each represented by a different Norse character:

  • Valkyrie: Available the first four times the Great Hall is triggered, this level gives players 10 free spins.
  • Loki: Triggered with five or more Great Hall entries, Loki gives out 15 free spins as well as a Wild Magic feature, which will randomly transform symbols into additional substitutes.
  • Odin: Once players have entered the Great Hall 10 times, they’ll be given 20 free spins by Odin. There is also a Wild Raven feature, in with Odin’s Ravens can randomly turn symbols into 2x and 3x multipliers.
  • Thor: Lastly, there’s Thor. Triggered with 15 entries into the Great Hall, Thor gives players 25 free spins with the excellent Rolling Reels feature. Players can earn multipliers up to 5x with Rolling Reels, which can give players consecutive wins on the same spin with big rewards.


Want to play Thunderstruck II? Use the link below to visit Royal Vegas, or play Thunderstruck 2 for free in the Flash game featured at the top of this page!