Skip to main content

Online Slots Review – Thunderstruck II Slot Review by Microgaming

Trying to find an online slot to play that’s fun and not too complicated isn’t always easy. We find that some of the best slots do the basics really well, yet somehow still manage to keep the players entertained with a wide variety of features.

Microgaming has nailed it on the head with the Thunderstruck 2 slot. With 5 reels, a whopping 243 paylines and an awesome bonus game, there’s a lot to take away from this fun slot.

In this Thunderstruck 2 slot review, we’ll look at all of the games features, how to play it to get the most out of it, as well as any tips or tricks.

Based on the mythical Norse world and featuring favourites such as Thor and Odin, is Thunderstruck 2 a casino favourite? Let’s find out.

Best Casino for the Thunderstruck II Slot

Since Microgaming is one of the more popular online gaming software providers, you’ll find Thunderstruck 2 available at the most popular online casinos.

That isn’t to say that you should choose the first casino you come across. No, no, no! You should only ever play at a casino that is well-established and trustworthy. Above all else, make sure they have a licence with the UK Gambling Commission.

Here’s a short list of some of the best casinos that you should invest your money in:

Operator Bonus Play
LeoVegas Review LeoVegas Review 100% up to £400 + 100 Free Spins. Play
18+ New UK players • Select Casino offer on sign-up and deposit • 4 Deposits of £10, £20, £50, £100 matched with a bonus offer of same value (14-day expiry) • 35x real money cash wagering (within 30 days) on eligible games before bonus cash is credited • Spins credited upon deposits; under £50 =10 Spins, £50 or over =25 Spins; on Book of Dead only (3-day expiry, winnings paid in cash) • Play responsibly • 18+ BeGambleAware.org • Full T&C’s apply
888casino Review 888casino Review Up to £1500 bonus
+ £88 No Deposit Bonus
or 100% up to £100
Play
18+ New players only • £88 is granted in FreePlay (FP) • FP must be claimed within 48 hrs of receiving the email and expires after 14 days • FP wins are credited as bonus and capped at £15, exc. JP win • Bonus wins are capped at £500 • Wager 30x bonus within 90 days • Wagering req's vary by game • Full T&Cs apply
Mr Green Casino Review Mr Green Casino Review Up to £100
+ 200 Bonus Spins
Play
18+ New players only • 35x wagering applies to Bonus Cash and Spins • Min dep of £20 to unlock the bonus • Wager of min £20 on slots unlocks 100 Bonus Spins and 20 Bonus Spins per day over 5 days on selected games • BeGambleAware.org • Full T&Cs apply
32Red Casino Review 32Red Casino Review Up to £150 Welcome Bonus Play
18+ New accounts only • Min £10 dep • Debit/credit card and PayPal only • 50x bonus wagering req’s • Game contributions vary • Max stake applies • 7 day expiry • See full terms
InterCasino Review InterCasino Review 100% up to £100 Play
18+ New UK based players • Max bonus £100 • Min dep £20 • 40x wagering req's within 30 days • Payment method restrictions apply
Bethard Casino Review Bethard Casino Review Up to £50 Welcome Bonus Play
New 18+ UK players only • Bonus will expire after 7 days from registering • First deposit of £20 or more • Skrill and Neteller deposits are not eligible • The bonus can be triggered up to 10 times for a maximum of £50 in bonus funds • Bonus is wager free and can be withdrawn instantly • Game weighting applies • Full T&Cs Apply • Gamble Responsibly
Comeon Casino Review Comeon Casino Review 20 Free Spins + 100% up to £25 Play
18+ New UK customers only • Min dep of £10 • Max bonus £25 • Ewallets not accepted • Free spin winnings - 30x wager req's in 7 days • Deposit and bonus - 35x wager req's in 30 days • Further T&Cs apply

First Impressions of Thunderstruck 2

Thunderstruck II Slot

We’re huge fans of Norse mythology, so that’s a definite bonus for us. More can be said for the graphics though. Even though the game was first published in 2010, it still feels a lot older than that. Perhaps that’s due to the ‘graininess’ of the artwork. Despite this, the scatter and wild symbols are easy on the eye. The music, on the other hand, is incredibly captivating. Very peaceful and melodic. Games like this remind us why Microgaming is still one of the top online casino software suppliers in the world.

How to Play Thunderstruck 2

So now you’ve found your casino, how the devil do you actually play the game?

The first thing you should notice when the game loads is a message promoting a new feature for Thunderstruck. It seems that Microgaming is stepping into the online computer game sector a little bit by introducing achievements. This means that you need to open the bonus game multiple times in order to progress.

Let’s not get overwhelmed by this yet. Here’s a quick overview of the features before we discuss them in turn:

Slot Name Thunderstruck 2
Reels 5
Developer Microgaming
Paylines 243
Progressive No
Free Spins Yes (10-25)
Bet Range £0.30 – £15
Bonus Game Yes
Multiplier No
Jackpot No
Return to Player (RTP) 96.65%
Play Thunderstruck II Slot Now!

Majority of the most popular casino games are very easy to get started with. Thunderstruck 2 is no exception to this. Here are three simple steps to get you started:

  1. Adjust the coin size using the + / – buttons below to the dial at the bottom of the game. The minimum is 0.01 and the maximum is 0.05.
  2. Next, select the number of coins you’d like to play with for each spin. The minimum is 1 and the maximum is 10.
  3. Check the amount of your bet under the ‘bet’ section before clicking ‘spin’ to get going!

There are some advanced features to check out if you feel confident. It’s quite subtle, but you should see an ‘expert’ button in the footer bar. Clicking this will change the layout of the betting area somewhat. Note: this might change depending on the version you’re playing.

The coins area now splits to provide an autoplay feature. Here you can fine tune the autoplay settings for:

  • The number of spins to play.
  • When to stop spinning, based on a decrease in your balance, or if a win exceeds or equals a certain amount.

Autoplay is generally used for people who want to walk away from their PC or mobile device; particularly useful if you need to wager through a casino bonus.

This, along with the ‘bet max’ button should be used ONLY if you are confident in what you’re doing. The ‘bet max’ button is especially risky since you don’t get to confirm or double-check the bet amount before the reels spin.

Thunderstruck 2 Slot Symbols

Here’s the breakdown of the different symbols and the min/max coins of potential winnings. Please note that Thunderstruck 2 pays left to right for adjacent symbols only. Some slots will pay right to left too, and for non-adjacent symbols.

Symbol 3 Symbols
4 Symbols
5 Symbols
Thunderstruck 2 75 200 1,000
Thor 30 100 500
Odin 30 100 450
Loki 20 80 400
Valkyrie 20 80 350
Valhalla 15 60 300
Longship 15 60 250
A 10 20 150
K 10 20 150
Q 7 15 125
J 7 15 125
10 5 10 100
9 5 10 100

Thunderstruck II Slot Review: Game Features

There are some seriously engaging and fun features to this online slot, namely:

  • Wilds.
  • Scatters.
  • Wildstorm feature.
  • The Great Hall of Spins (the slot is worth playing for this alone)

Wild Symbols

The wild symbol is the game’s Thunderstruck II logo; a blend of lightning blue storm chaos.

This substitutes for all the symbols in the above table apart from the scatter symbol, which is Thor’s Hammer with ‘BONUS’ emblazoned on the side.

If the wild symbol appears across any winning payline, the winnings are doubled.

Thunderstruck 2 Scatters

The scatter symbol is Thor’s Hammer and is what triggers the awesome Great Hall of Spins, where other bonus features can be unlocked; more on this coming up!

We do have to wonder if Thor knows someone’s defaced his hammer. Don’t make Thor angry! (At least it’s not Hulk).

Wildstorm Feature

The Wildstorm feature has a random chance (of which the percentage is unknown) of occurring. If it does occur, any of the reels can turn wild, greatly enhancing your winnings.

Do note that free spins can’t be triggered during the Wildstorm feature.

The Great Hall of Spins

Thunderstruck 2 The Great Hall of Spins

Here we go, the ultimate feature of Thunderstruck 2! This where you’ll unlock free spins, multipliers and the chance to win BIG!

This bonus game triggers from Thor’s scatter symbol. You’re looking for at least 3 of these anywhere across the reels to get started. Successive spins in the normal game revealing the scatter symbol will progressively unlock some of the best bonus slot games Thunderstruck II has to offer.

The games are centered around these famous Valhalla individuals:

  1. Valkyrie.
  2. Loki.
  3. Odin.
  4. Thor.

When entering The Great Hall of Spins, you’ll see these four characters lined up; you’ll have to select the game you want to play, but they won’t all be available from the start. It is in your best interest to play the furthest game to the right; you’ll see why shortly when you read about the features of each game.

All spins are automatic, so just sit back and watch the reels turn over and your winnings go up… hopefully! All winnings are multiplied by the bet amount immediately before playing the bonus game.

Valkyrie Bonus Game

Valkyrie will be your host for the bonus game from the 1st to the 4th time of playing The Great Hall of Spins. The graphics have now changed slightly to be more aligned to Valkyrie’s artwork. The symbols remain the same as per our symbol table.

You’ll immediately be awarded with 10 free spins when the game fires up. All wins for each spin will have a 5x multiplier attached to it and free spins can be earned during the game. When the free spins are over, you return back to the normal game with your new winnings in your bank.

Loki Bonus Game

After revealing Valkyrie’s bonus at least 4 times, Loki will show up from the 5th time all the way through to the 9th. Now the game has turned into a sneaky green style, with Loki’s prying eyes sitting above the reel.

15 free spins are on offer here, so a slight improvement on Valkyrie’s 10.

There’s also an added ‘Wild Magic’ feature with Loki, specifically on the 3rd reel. If it does appear here, there is a random chance for it to convert other symbols into additional wild magic substitutes. These basically act as wild symbols, with the original Thunderstruck II logo still remaining as wild.

Further free spins can be won here by revealing the scatter symbol. You need at least 2 across any of the paylines, which will award 1 free spin. 3, 4 or 5 scatters will award 2, 3 or 4 free spins respectively. When you have no free spins left, you’ll return to the regular game with your winnings.

Odin Bonus Game

Thunderstruck 2 - Odin and Thor Bonus Games

If you manage to get through Valkyrie and Loki, Odin will be available from the 10th time the bonus feature is revealed. Now we’re looking at the starry sky above Valhalla with a dark raven theme.

This time, you’re awarded 20 free spins for your efforts and the wild symbol changes from Loki’s Wild Magic to Odin’s Ravens. If during the free spins you get a winning payline, one of the Ravens will fly down and convert a symbol to a multiplier. These can be either 2x or 3x, and that winning line on the free spin will pay out at the revealed multiplier.

There is a smaller chance that both ravens will fly down. If this does happen, there is a chance that a payout of x6 can occur! If you have no more free spins remaining, your winnings are added to your bank and you’ll return to the normal game.

Thor’s Bonus Game

If you manage to get this far, congratulations! You have now unlocked the God of Thunder’s game. Thor will now be an option for you to select out of the 4 characters from the 15th trigger of the bonus feature in normal play.

The game is now in an electric blue theme with rock music blasting in the background (not quite on a par with AC/DC’s ‘Thunderstruck’, but it’s still catchy).

You’re now granted a whopping 25 free spins and the wilds feature has been replaced with Rolling Reels, which are linked to multipliers.

How this works is that any symbols across a winning payline, during the free spins, will be removed and the reels will roll down one position, replacing the missing symbols with a new one. If the replacement symbols trigger another win, the multiplier will increase another step. 2 consecutive wins will award a 2x multiplier to that winning line, 3 consecutive wins a 3x multiplier, and so on, up to 5x.

If the rolling replacements don’t reveal another winning line, the multiplier is reset to 1x and the free spins will continue. Note that the Rolling Reels feature does not substitute for the free spins.

When the free spins are over, you’ll return back to the normal game, hopefully with some big wins!

Any further scatter bonus symbols will mean you can re-enter any of the 4 games, with the most lucrative being Thor’s.

Thunderstruck II Slot RTP

Thunderstruck 2’s RTP (return to player) is 96.65%.

What does this mean? Mathematically speaking, this means the house edge is 3.35%, and for every £100 you spin through you might expect to see a return of £96.65.

There isn’t a defined amount of time that this rate will be experienced, which can be both good and bad for you. There’s a chance that you’ll load a slot, hit the Valkyrie bonus feature straight away and walk away with a nice win. There’s also a chance that you’ll spin the reel 10 times in a row at the maximum bet and win nothing.

The way the power of numbers works is that the longer you play a slot, the more chance you have of getting close to the RTP.

How to Win on Thunderstruck 2

There isn’t a magical strategy that will sway an edge in your favour. If this were possible, why would an online casino host a slot?

Since there is a choice to be made when The Great Hall of Spins opens each time, always choose the character that you’ve unlocked furthest to the right. This will ensure you get access to the highest amount of free spins and more lucrative features.

Additionally, you can define your own strategy BEFORE you sit down for a slot session:

Ensure you’re in a positive frame of mind.
Define a fixed amount of time you’re going to play for.
Online have an amount in your casino account that you’re willing to lose.
Keep your gambling bank separate from your household/income account.
DON’T use the ‘max bet’ function on slots unless you really know what you’re doing.

The above steps will go lengths to remove the emotion out of gambling and to protect your bank.

One further thing you can do is to set your bet size via the coin amount and value options and stick to this amount. Many gamblers will split their bank into 100 points by dividing their bank by 100. The result is the stake amount for each bet, and they won’t go over this amount on any single spin.

The very best way to swing the odds in your favour when it comes to gambling is to leverage a casino’s bonus offer. This will reduce the amount you risk of your own bank, if any. This is the case with a no deposit welcome offer where you can utilise the casino’s free bonus money or spins.

Can You Play Thunderstruck 2 for Free?

Yes, you most definitely can. You’ll find a wide range of casinos hosting free demo version of the game. Some features might vary across different casino sites, but the main game features, especially The Great Hall of Spins, will remain as if you were playing the live version.

This is a great way to get used to a slot before risking your money. It’s important to enjoy a slot game and not get bored too quickly, so ensuring you try it out first with zero risk involved is advised.

Thunderstruck II Slot: Conclusion

Our initial impression of the graphics faded the more we played Thunderstruck 2 and moved towards the bonus game feature. We particularly liked how the art style changed when moving through the characters of Valkyrie, Loki, Odin and Thor.

Using Norse mythology is very niche and has proven to be a good choice by Microgaming; they’re appealing to a huge fan audience and leveraging the Marvel franchise to good effect, without needing the rights from Marvel specifically.

Despite a lack of a jackpot feature, The Great Hall of Spins definitely makes up for this. The generous amount of free spins, the chance to trigger further free spins and the large multipliers can lead to some very big wins. The coin payouts for winning lines in the normal game are decent too. This means that VIP high rollers might be swayed towards the game, although the majority will favour progressive jackpot slots.

The RTP of 96.65% sits in the middle of the road for us. It’s not shamefully low but it’s also not high enough to warrant using Thunderstruck 2 for wagering through a bonus offer. That being said, some fan favourites still choose it as their go-to for this purpose.

Overall, the Thunderstruck 2 slot is an engaging and well-designed game. One which we’re sure you’ll enjoy playing!

Thank you for taking the time to read through this online slots review. We hope you enjoy your gaming experience! We’ve had the music to Thunderstruck 2 playing in the background while creating this review, without even realising it… it’s that peaceful!

Thunderstruck 2 Online Slots Review - Your Questions Answered

Yes, you can. The main way to do this to increase the chance you’ll walk away as a winner is to use an online casino bonus to your advantage. Most casinos will offer a welcome bonus where you’ll be granted some bonus money just by registering with the casino. This massively reduces the risk to you since you won’t have to use your own money to play with.

Make sure you read through the terms and conditions of these bonuses and check out the casinos we feature for some of the best offers.

Firstly, the best online slots are the ones you enjoy. There’s no point playing a slot if you’re not enjoying the process.

Secondly, look out for some of these, which will indicate a decent slot:

  • Hosted by multiple, respected casinos.
  • Has been created by a reputable software developer. Microgaming and NetEnt spring to mind.
  • The slot is covered by multiple independent review sites positively.
  • A slot’s RTP is high, which is especially important if you’re looking to reduce variance and wager through an amount of money or spins to trigger a bonus.

Legitimate casinos will not have rigged slots. Slots, in general, are not rigged, but they will all carry an edge in the house’s favour. This doesn’t mean they’re rigged, it’s just how gambling in general works.

There are some instances where an online casino has been created, it’s developed its own games and rigged them so the chance of the player winning is drastically low. These casinos are quickly discovered and shut down.

Stick to casinos that are well-known, trusted and regulated properly, which leads us on to the next question…

You can use this checklist to ensure you’re playing with the most trusted casinos:

  1. The casino is regulated by the relevant authority for your country. In the UK this is the UKGC (UK Gambling Commission). The more trustworthy casinos will display their licence number on their website.
  2. There’s a welcome bonus offer upon registering with the casino. This is also known as a ‘no deposit bonus.’
  3. For VIP high rollers, does the casino have a dedicated VIP section or advertise this?
  4. Does the casino feature across multiple independent review sites?

All the casinos we feature here at Casino Deal can be trusted with your money. If you’re ever in doubt, do some more research before you commit.