Play Thunderstruck 2 by Microgaming for Free

Click to play Thunderstruck 2 in demo mode for free
4.7 / 5
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05 May 2010

Features & Themes

  • Autoplay
  • Bonus feature
  • Free spins
  • Quick spin

Thunderstruck 2

Thunderstruck II is a classic online slot game developed by Microgaming that was revolutionary when it was first released. While not overly flashy, the game's graphics are still well-designed and offer a small thematic frame that adds to the game's overall appeal. With its five reels, three rows, and 243 ways to win, players must only place three or more matching symbols in succession from left to right on any row. This format may not seem extraordinary today, but it was groundbreaking when Thunderstruck II was first released, and it's one of the reasons why the game is so popular.

  • Thunderstruck 2: Welcome Screen
    Thunderstruck 2: Welcome Screen
  • Thunderstruck 2 Base Game
    Thunderstruck 2 Base Game
  • Thunderstruck 2 Big Win
    Thunderstruck 2 Big Win

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Thunderstruck 2 Review

The game quickly gained a reputation as a legendary game due to its impressive aesthetic solutions and attractive bonuses. It's easy to see why Thunderstruck 2 is beautifully presented and offers high payouts and exciting rewards. The game is heavily influenced by Norse mythology, one of the fascinating mythologies. Unsurprisingly, Microgaming was inspired to adopt Norse characters for the Thunderstruck sequel. The original game was released six years before its sequel, but Thunderstruck 2 quickly surpassed its predecessor in popularity thanks to its improved graphics and gameplay.

Theme and Graphics

Thunderstruck II boasts top-notch graphics and striking aesthetics, a hallmark of Microgaming's game development. The game's developers have excellently blended fast-paced action with new bonus features, stunning colors, and music. The game's graphics are even more spectacular, and the theme is more complex than its predecessor. As expected, the game features Norse gods such as Thor, Odin, Valkyrie, and Loki on the reels.

In addition to the Norse gods, other symbols associated with the game's theme include Viking ships, Thor's hammer, Thor's house, and regular playing cards, which serve as the game's lower symbols. The game's reels are designed to look like they are carved into huge slabs of stone, and the background features a stone pattern in different shades of blue and gray. To tie everything together, the game's creator has included an epic mythological soundtrack that plays in the background, adding to the game's immersive experience.

RTP and Volatility

Thunderstruck II has a respectable RTP (return to player) of 96.65%. The high RTP means that for every $100 wagered, the game will pay an average of $96.65 in winnings. This RTP rate is slightly above average for online slots and is considered a fair return for players.

The game has medium volatility, which means that the game pays out moderate-sized prizes regularly rather than infrequent large payouts, making the game suitable for players looking for a balance of consistent payouts and the potential for big wins.

The medium volatility level of Thunderstruck II also makes it a suitable choice for players with different types of bankrolls. High rollers can enjoy the potential for bigger payouts, while players with smaller bankrolls can still enjoy the game with a more moderate betting strategy.

Special Features

Free Spins

Thunderstruck II offers a variety of free spin options for players to choose from. The Great Hall of Spins feature is triggered when players land three or more bonus hammer symbols anywhere on the reels. If players are lucky enough to activate the Great Hall of Spins feature five times, they will receive a new free spin option in future free spin rounds. All scatter and bonus wins are multiplied by the player's total bet, and all wins from the free spins are calculated based on the player's original bet from the main game.

The Valkyrie Bonus Game

The Valkyrie Bonus Game is the first of four free spins options and is the only one available initially. Players will receive ten free spins in the Valkyrie game. During the free spins game, three or more Bonus Hammer symbols anywhere on the reels can trigger additional free spins. Each win during the Valkyrie game is increased by five, offering many winning potentials for players.

The Loki Bonus Game

Once this game is unlocked, players can choose between the free spins with Valkyrie and Loki. After players have triggered the free spins round five times, they can access the second free spin option. The Loki game offers 15 free spins, five more than the Valkyrie game. However, unlike the Valkyrie game, this game does not have a multiplier. Instead, the Loki game features the Wild Magic emblem. On random spins, this symbol appears on the center reel, and if players are lucky enough to land it, up to 14 regular symbols will also become wilds, leading to massive payouts. The Wild Magic symbol pays out the same as the base game's Wild symbol but without the base game's multiplier. Players can retrigger the free spins by landing two or more Bonus Hammer symbols on the reels.

The Valkyrie Bonus Game

The Valkyrie Bonus Game is the third free spins option players can unlock after ten visits to the Great Hall of Spins. Once unlocked, players can choose between the Valkyrie, Loki, and Odin bonus games when they trigger the free spins round. The Odin game offers 20 free spins and features the Wild Raven symbol, randomly transforming symbols into wild multipliers. If players win a spin, they will receive a 6x multiplier that can lead to incredible wins. Unlike other free spins options, the Odin game does not allow players to retrigger the free spins.

The Thor Bonus Game

The Thor game is the fourth and final free spins option players can unlock after 15 visits to the Great Hall of Spins. The Thor game offers an impressive 25 free spins bonus and features the unique Rolling Reels feature. When a winning combination is formed, all the winning symbols are cleared, and the above symbols move down to fill the gaps. This process is repeated when players earn more winning combinations, leading to big wins and more chances to improve their balance. Each rolling reel made during the Thor game will give players a multiplier that increases by one with each additional win, up to a maximum of 5x. The multiplier returns to 1x for the next spin when the Rolling Reel feature ends, and no more wins have been earned. Players cannot retrigger the free spins when playing the Thor game.

Wild Storm Bonus

In addition to the Great Hall of Spins, Thunderstruck II also offers a randomly appearing extra feature called the Wild Storm bonus game. The entire screen darkens, and dramatic storm clouds appear over the reels, signaling the start of the unique quality. This feature can appear on any spin, adding an element of surprise and excitement to the game.

When the feature starts, the words "Wild Storm" appear at the top of the screen, and up to five reels turn into special wild reels. The number of reels affected varies and is randomly selected. This feature can lead to big wins, especially if players are lucky and several reels turn wild simultaneously.

The Wild Storm feature adds an extra layer of excitement to the game and keeps players on the edge of their seats, waiting for the next appearance of this thrilling bonus round. During the Wild Storm feature, neither the scatter nor the standard wild symbols are displayed, so players cannot trigger free spins or get bet multipliers. However, the potential for big wins from the wild reels more than makes up for this.

Strategy Tips

A good strategy for novice players looking to try Thunderstruck II would be to familiarize themselves with the game's features and paytable. This will give them a better understanding the game's symbols, winning combinations, and potential payouts.

Once they understand the game well, they should start with a small bet and gradually increase it as they become more comfortable. It's also important to watch for the Wild Storm bonus, as it can offer massive potential for big wins at any moment.

Another strategy for novice players is to use the Great Hall of Spins feature and try out each free spins option, starting with the Valkyrie game. This will give them a good idea of each option's different features and potential payouts, allowing them to choose the one that best suits their style of play.

Lastly, they should always be mindful of their bankroll and set a budget. It's important to know when to stop and not chase losses. With these strategies in mind, novice players will be well on their way to enjoying and potentially winning big on Thunderstruck II.


In conclusion, it's easy to see why Thunderstruck II is one of the most popular online slots. The game's visuals, animation, music, and overall cinematic quality appeal to the senses, and despite being a little dated, it still holds up against newer, younger competitors. Microgaming has successfully reinvented the slot machine genre with this game, making it a true classic in online gambling.

The gameplay is also a significant factor in the game's success. Microgaming's concept of 243 ways to win was a game-changer, and Thunderstruck II was one of the first games to take full advantage of this concept. The game's features, such as the Wild Storm bonus, add to the game's entertainment and potential for big wins. The way the bonus games are achieved also adds to the game's longevity, making it a rewarding experience for players to stick with Thunderstruck II. Ultimately, personal preference will determine which add-on game is the best, as each offers something unique. Overall, Thunderstruck II is a must-play for any online casino enthusiast.

Free Demo Play

If you want to try "Thunderstruck II," our website offers a free demo version. This allows players to experience the game's graphics, gameplay mechanics, and special features without risking any real money.

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Thunderstruck 2 FAQ

Thunderstruck II boasts an impressive RTP (return to player) of 96.65%, above the industry average. Additionally, the game has a medium volatility level, meaning that players can expect a balance of moderate-sized payouts and the potential for big wins.

No, Thunderstruck II does not feature a progressive jackpot. However, the game still offers plenty of winning opportunities and has a high potential for big payouts.

Yes, Thunderstruck II features the Great Hall of Spins bonus round. This is triggered by landing three or more bonus hammer symbols on the reels, and players can choose from four different free spins options, each with unique features and potential payouts. As players trigger the free spins, more options become available to them.

Players can try out Thunderstruck II for free at select online casinos. This is a great way to test the game and its features without risking any real money.

Before playing Thunderstruck II for real money, trying out the demo version is recommended. Do your research and read reviews before making your final decision. Once you understand the game and its features, sign up with a reputable online casino. DoOnce you've chosen a casino, you can make a deposit and claim any bonuses offered to start playing for real money.

This Thunderstruck 2 review was authored by W.Bergstrom | Last updated on 03 March 2023.