Thunderstruck II Mega Moolah
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Thunderstruck II Mega Moolah
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Thunderstruck II Mega Moolah Slot Review

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How to play Thunderstruck II Mega Moolah mobile slot

One of the most famous Microgaming slots of all time gets the most famous Microgaming jackpot of all time. The Thunderstruck II Mega Moolah slot game is a match made in Valhalla.

If you are a fan of Microgaming slots, then chances are you’ll know exactly what you are getting when you open up these 5×3 reels.

Thunderstruck II Mega Moolah is a 243 ways to win slot game with four jackpots, one of which seeds at 2 million in cash. You’ve got wilds and multipliers, and you can unlock four free spin bonus features as you play.

The RTP is low at 91.71%, as you’d expect from an online slot with such a huge jackpot win, but the features allow you to win big even in the base game, thanks to those free spin features. Here’s why you should play and why some of you shouldn’t.

The Thunderstruck II Mega Moolah Slot Features

At heart, this is a very simple high variance slot. You play on 5 reels with 3 rows of ancient Viking symbols, from Thor to Odin, Loki, and Valkyrie. You have a rainbow road, a boat, and finally, Ace to 9 completing the paytable.

You have a wild that will substitute for all other symbols when used. You have the WildStorm feature, which strikes randomly and can turn up to 5 reels wild.

That’s your base game. It can feel a little slow at times, and you will need a lot of patience, especially when you hit the free spin bonus games.

The first time you enter the bonus, you only get the Valkyrie bonus of 10 free spins with a huge 5x multiplier on all wins. Most mobile slots online are fine with giving you just that, say even the original Thunderstruck slot.

The free spins or the Mega Moolah jackpot?

For most fans of the original Microgaming online slot, the aim of the game is to enter the free spin bonus round multiple times in a row. Why? Because each time you enter the bonus five times, you open up a brand new free spins bonus.

This could be 15 free spins with easier-to-trigger scatter and random wilds. Or 20 free spins with random 2x or 3x multipliers, which can multiply each other. Or 25 free spins with avalanching wins and up to 5x multipliers.

It’s a lot of features, but if that’s what you want, go to the original or play on the Immortal Romance slot with a higher overall Return to Player Rate. But if you like the idea, you are really here for the big jackpots.

Because when you play on Mega Moolah slot games, the goal is always to hit the mega moolah and win millions. That’s what you are here to hit and why you should play at one of our best Microgaming online casinos.

Game Screenshots

Thunderstruck II Mega Moolah slot stats

Mobile Slot releasedJune 2022
Slot typeVideo Slot
Slot reels / paylines5 Reels / 243 Paylines
House edge / RTP13.29% with jackpot contribution of 5% / 86.71%
Slot volatilityMedium/High
Min/Max bet0.30 / 24
Max win8,000 without Jackpot
Free spins10 to 25 Free Spins / Various Features
Bonus roundsWild, Scatter, Free Spins, Rolling Reels, Multipliers, Wild Reels
Slot ThemesMyths & Legends
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Bonus Features

Wild Multiplier: The Thunderstruck II slot logo is the wild symbol that can complete payways by replacing other symbols. It also applies a 2x multiplier to any win it's part of.

WildStorm Feature: This randomly strikes the reels and turns up to 5 reels wild.

Scatter and Free Spins: Mjolnir is the bonus scatter symbol. 3 or more open up the Great Hall of Spins.

Here you can choose to play one of four bonus games. However, you won't get access to all four bonuses straight away. Every 5 entries into the free spins will open up a new bonus.

By the 15th entry, you can then pick and choose from any of the bonus features. Your progress will be saved between games played, as long as you play in the same casino.

  • Valkyrie Bonus: 10 Free Spins. All wins are multiplied by 5x in the free spins
  • Loki Bonus: 15 Free Spins. If two, three, four, or five scatters symbols appear in free spins, you win one two, three, or four extra free spins respectively. The Wild Magic symbol can land on reel 3, transforming up to 15 symbols into wilds.
  • Odin Bonus: 20 Free Spins. Any win activates the wild Raven bonus feature. Random symbols are transformed into a wild multiplier symbol. You can win up to 6x multiplier.
  • Thor Bonus: 25 Free Spins. Every win activates the rolling reels. Winning symbols are removed and more will tumble from above. The multiplier value increases by 1 on each rolling reel, up to a maximum of 5x.

Mega Moolah Progressive Jackpot Bonus: This is a randomly activated jackpot game. You get to spin a wheel which is divided into four different coloured segments.

  1. Mini: starts at 10 in cash
  2. Minor: starts at 100 in cash
  3. Major: starts at 10,000 in cash
  4. Mega: starts at 2 million in cash

5% of your bet goes towards contributing to the overall jackpot.


  • 4 Progressive Jackpots to Win
  • 8,000x bet max win without jackpot
  • 4 exciting free spins features


  • RTP is low compared to original
  • RTP can chance depending on slots site

Thunderstruck II Mega Moolah Review Conclusion

The original Thunderstruck 2 slot is fun but difficult, you need the patience to fall in love with it, but you will. This Thunderstruck II Mega Moolah slot is even more difficult because the RTP is 86.71%, with a 5% contribution elevating it to 91.71%.

Normal for any of the Mega Moolah slot games like the original Mega Moolah, but way below the 96.65% of the standard game.

So if you have never played the original, play that one first. If you then want to enjoy all the wonderful mechanics of the original but with the potential to win millions, play Thunderstruck II Mega Moolah.

It's a tough choice, but we can see swapping between one or the other whenever the jackpot is high enough.

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Review by Lucky Mobile Slots, last updated: June 9, 2022 - Rating 4

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