Thunderstruck II Slot Review

Embark on a mythological journey with the legendary Thunderstruck II game. This Microgaming classic transports players into a realm of Norse gods, where adventure awaits on every spin. Launched with much fanfare in 2010, Thunderstruck II carved out a place in the pantheon of slots, captivating players with its thematic richness and innovative features. Its standout attraction, The Great Hall of Spins, offers a multi-level free spins bonus that still captures the imagination of players, while the random Wildstorm feature promises to turn the reels wild with potential for big wins. The game’s enduring popularity is a testament to its engaging playability and the enduring allure of its Norse mythology theme. Step into this world and witness why this slot remains a formidable presence in online casinos across the globe.

Play Thunderstruck II

Welcome to the Thunderstruck II slot game

Game’s Theme, Graphic and Design

The slot’s visuals may seem subtle initially, with only a hint of thematic design framing the reels. However, the dynamic in-game animations coupled with an immersive soundtrack provide a rich auditory and visual experience that enhances the enjoyment of the activity.

Thunderstruck II Slot – Reel Screen, Symbols and Payouts

At its launch, The game introduced a pioneering format from Microgaming that set new standards in slot design. The playtable features a 5-reel, 3-row layout with an impressive 243 ways to win, where players simply need to align three or more matching symbols from left to right on any row to secure a win. This approach to winning combinations was quite innovative at the time and significantly contributed to the game’s widespread charm.

This slot is centered around Thor, the mythical Norse deity of thunder. The highest rewards come from the Thor symbol, with other divine figures such as Odin, Loki, and Valkyrie offering substantial prizes as well. Symbols of a Viking ship and a Valhalla represent mid-level payouts, while the traditional card deck symbols: 9, 10, J, Q, K, and A, yield the more modest winnings. Additionally, the activity features Thor’s Hammer as a bonus Scatter symbol and the Thunderstruck II game logo as the Wild symbol. Each of these Norse gods plays a pivotal role in their respective bonus rounds, influencing the number of Free Spins awarded and the accompanying multipliers.

Thunderstruck II symbols and playgrid

For example, when your bet is $30 the cards give you 5, 7, or 10 coins for three symbols, but the higher symbols give you payouts of 15, 20, or 30. Under the same conditions of gambling stakes the game logo promises a hefty 1000 coins payout for five on a line, while Thor’s Hammer offers a chance at 200x the bet for a full grid. Nonetheless, a variety of bonuses are available that can grant you free spins and increase your winnings with multipliers.

Symbol Payouts, when Your bet = $30
9 3, 4, or 5 icons pay 5, 10 or 100 coins
10 3, 4, or 5 icons pay 5, 10 or 100 coins
J 3, 4, or 5 icons pay 7, 15 or 125 coins
Q 3, 4, or 5 icons pay 7, 15 or 125 coins
K 3, 4, or 5 icons pay 10, 20 or 150 coins
A 3, 4, or 5 icons pay 10, 20 or 150 coins
Viking ship 3, 4, or 5 icons pay 15, 60 or 250 coins
Valhalla 3, 4, or 5 icons pay 15, 60 or 300 coins
Valkyrie 3, 4, or 5 icons pay 20, 80 or 350 coins
Loki 3, 4, or 5 icons pay 20, 80 or 400 coins
Odin 3, 4, or 5 icons pay 30, 100 or 450 coins
Thor 3, 4, or 5 icons pay 30, 100 or 500 coins
Hammer – Scatter symbol 2, 3, 4, or 5 icons pay 30, 60, 600 or 6000 coins
Thunderstruck II logo – Wild symbol 3, 4, or 5 icons pay 75, 200 or 1000 coins

How to play Thunderstruck II Slot Game Demo

Plunge into the excitement of the slot gaming demo by first acquainting yourself with its user interface, which pays homage to its era with a design that’s both simple and captivating. Start your adventure by clicking the gear icon, opening up a suite of settings such as sound adjustments and the quick spin feature for more rapid playability. To grasp the value of each mythical icon, click on the icon just below to reveal the paytable.

Thunderstruck II bonus Free spins of Valkyrie

The question mark icon reveals the deeper game mechanics and rules, where you learn about the 30x bet multiplier per spin, crucial for calculating potential wins. Setting your bet level is your next step, adjusting the coin level from 1 to 10, and the coin size between 0.01 and 0.20, shaping your stake to anything from $0.30 to $60 per spin.

With each spin in the demo, you inch closer to unlocking the mythical powers of The Great Hall of Spins, without the risk, but with all the thrill that made Thunderstruck II a legend in its own right.

Thunderstruck II Bonuses and Features

This game boasts an array of features as vast as Thor’s arsenal of hammers, offering a variety of engaging elements. Some of these features require a buildup over time, while others could burst onto the scene unexpectedly.

Wildstorm Feature

A feature that falls into the spontaneous category is the Wildstorm, which can be triggered during any regular spin of the game. When the Wildstorm is activated, Thor descends upon the reels, charging them with his power and potentially transforming up to five reels into wilds. This electrifying event holds the potential for significant gains, as having all reels turn wild can yield a reward of up to 8,100 times the initial bet.

Thunderstruck II bonus Free spins of Loki

The Great Hall of Spins

The most impotent bonus feature in this gambling is known as The Great Hall of Spins, divided into four distinct levels, each offering unique rewards and game modifiers. These levels are progressively unlocked through repeated activation of the bonus rounds, beginning with the Valkyrie free spins. The catalyst for these rounds are the Scatter symbols, where landing three or more unlocks the ensuing bonuses:

  • Valkyrie, the initial level, is accessible from the very first bonus activation and grants 10 free spins with a 5x multiplier on all wins. These free spins have the potential to be reactivated.
  • Loki becomes available upon the fifth bonus activation, presenting players with 15 free spins coupled with the Wild Magic Feature. In this mode, the appearance of the Wild Magic symbol on reel 3 can transform other symbols into additional Wild Magic symbols. Moreover, landing 2 to 5 bonus symbols during this round can retrigger 1 to 4 extra free spins.
  • Odin is on offer after the tenth bonus activation, providing 20 free spins and introducing the Wild Raven feature. With this, ravens perch above the reels and can swoop down randomly to convert symbols into 2x or 3x multipliers. If both ravens land, they have the potential to combine for a 6x multiplier.
  • Thor is the final tier, unlocked after the 15th bonus activation, and it rewards players with 25 free spins featuring the Rolling Reels mechanism. This mechanism removes winning symbols, allowing new ones to fall into their place, thereby creating additional chances to win within the same spin. Following each successive Rolling Reel win, the multiplier escalates from x2 up to x5. The multiplier resets to x1 with the commencement of a new spin.

Thunderstruck II RTP and Variance

With a return to player (RTP) percentage of 96.65%, Thunderstruck II is categorized as a high-volatility slot. This high variance indicates that while wins may be less frequent, they can be substantial when they do occur. Betting options are highly flexible, starting from as little as $0.30 to a robust maximum of $60 per spin, accommodating both conservative bettors and high-stakes players. In this electrifying Norse-themed adventure, you have the potential to strike a formidable jackpot of up to $480,000.

Thunderstruck II bonus Win


Thunderstruck II stands as a towering achievement in the realm of online slots, merging the mythical charm of Norse legends with cutting-edge gaming technology. Its impressive RTP of 96.65% coupled with high volatility ensures that each spin holds the promise of substantial rewards, mirroring the epic tales of the gods it portrays. The slot’s broad betting range caters to all types of players, from those who tread lightly to the high rollers seeking the thrill of larger bets.

The game’s centerpiece, The Great Hall of Spins, offers a progressive feature that keeps players returning, eager to unlock the successive levels of free spins and the rich rewards they hold. Meanwhile, the random Wildstorm feature adds an unpredictable edge, capable of turning a standard spin into a monumental win.

Despite its age, Thunderstruck II has lost none of its appeal, remaining a favorite among enthusiasts for its dynamic playability and the potential for lucrative payouts. Whether you’re drawn to the game for its storied theme, the anticipation of a hefty jackpot, or the sheer enjoyment of its features, this is a game that deserves its place in the pantheon of online casino legends. As the gods of old once ruled the skies, so does Thunderstruck II continue to reign over the world of slots, promising an experience that is both thrilling and rewarding.

Ajit Bagchi
AuthorAjit Bagchi

Ajit Bagchi stands as a beacon in Bangladesh's online gambling sphere, renowned for his incisive reviews, especially concerning Pin Up online casino. With over a decade in the industry, his expertise has shaped the choices of countless enthusiasts. Beyond the casino tables, Ajit co-owns an animal shelter, showcasing his deep commitment to community welfare. In both domains, he blends professionalism with compassion, marking him as a unique voice in the world of casino reviews and beyond.