Thunderstruck II slot review

Thunderstruck II slot from Microgaming is a 2010 sequel to the original Thunderstruck game that was released 6 years prior. Both games are based on Nordic Mythology and feature the gods like Thor, Odin, Loki and Valkyrie. The second instalment became a proper cult and made it to the list of the top played slots ever mostly thanks to the lucrative and elaborate The Great Hall of Spins feature. In this review, we’ll check the game’s features closely and see which of the UK online casinos will let you play it, while providing you with a sweet casino bonus.

Thunderstruck II slot features and free spins

Thunderstruck II slots is set on 5 reels and 243 ways to win with the symbols of the four main gods as well as card symbols carved from the rock. The game logo acts as a Wild symbol to substitute all the other symbols apart from the Scatter, which is a Thor’s Hammer.

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The main attraction of Thunderstruck II slot is without any doubt the multi-level The Great Hall of Spins feature. To trigger it initially you will have to land at least 3 of the Thor’s Hammer scatters. The way the free spins levels work is the following:

Level 1 - Valkyrie

The first four triggers are the Valkyrie level, which comes with 10 free spins and a x5 multiplier. It is possible to retrigger more free spins during this level.

Level 2 – Loki

The second Loki level will keep going from the 5th until the 9th triggers. Here you receive 15 free spins with an addition of the Wild Magic feature, which starts on the middle reel and transforms the normal symbols into more wilds.

Level 3 - Odin

The third level runs through the 10th - 14th triggers and awards you with 20 free spins and an extra Wild Raven feature. One of Ravens will give you either x2 or x3 multiplier. Get 2 Ravens and receive x6 multiplier applied to all your wins.

Level 4 - Thor

Starting from the 15th trigger, you can benefit from the final Thor Free Spins level. Here players enjoy 25 free spins and the extra Rolling Reels feature. The more consecutive wins you get in a row, the bigger the multiplier you get. It starts from x2 and goes up to x5.

After you’ve gone through the Thor’s feature, you will be able to start picking and choosing the free spins level yourself.

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Thunderstruck II slot bonus

Apart from Free Spins, we can pretty much guarantee that you will receive an amazing exclusive online casino welcome bonus when you first deposit with one of the best online casinos listed below. Let’s get this Nordic epic game going while enjoying the casino freebies from the most popular UK online casino operators.

Where to play Thunderstruck II slot online


£ 100 bonus on first deposit 120 bonus spins. 18+ New Customers only. 20 no deposit free spins available on Book of Dead game only. Must be claimed on the 'My Offers' page within 14 days of sign-up. Free Spins have a £0.10 value each and expire 7 days from claim. 35x wagering requirement on eligible slots before winnings are converted to cash. Select Casino offer on sign-up and deposit. 4 deposits of £10, £20, £50, £100 matched with a bonus cash 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).

£ 50 bonus on first deposit and 50 free spins on first deposit. New UK customers only. Opt in required. 1x per customer. Min. £20 deposit. 1st deposit only. Selected games only. Max. Bonus £50 with 35x wagering and 50 Free Spins at £0.20/spin on Starburst™ with 35x Wagering. Free Spins and Bonus credited once deposit amount has been wagered on slots. Bonus and Free Spins expire 7 days after issue. Game weighting, game, country, currency, player restrictions and terms apply.

£ 50 bonus on first deposit. Min. £10 deposit. 50% up to £500 on 1st deposit. Certain deposit types methods excluded. 40x wagering requirement within 30 days on casino and/or live casino. Real money first when playing bonus. Weightings apply.

£ 50 bonus on first deposit 50 extra spins. New customers only. Min. £10 deposit. Max. bonus £50. 40x wagering requirement on bonus amount within 30 days. Bonux max bet £5. Spins paid in batches of 10/day over 5 days and expire after 24 hours. Game weighting applies.

£ 40 bonus on first deposit. New Customers Only. Minimum deposit £10. 35x wagering requirement applies. Bonus will expire 30 days after opt-in.

200 no wagering free spins on first deposit. New UK players only. Spins only available on Starburst. Deposit and play £25 on selected games and get 25 spins OR; Deposit and play £100 on selected games and get 100 spins OR; Deposit and play £200 on selected games and get 200 spins. Spins expire after 3 days. 14 days from registration to claim offer. Players may withdraw their cash deposit or any remaining cash deposit and any cash winnings. If this is withdrawn, the spins and any winnings will be forfeited. All winnings from the spins will be paid out in cash.

£ 100 bonus on first deposit. Min. deposit £20. 100% bonus up to £100 valid on first deposit only. Wagering on bonus: 80x. Wagering must be completed within 30 days. Max bonus bet £5. Bonus is valid for a total of 21 days. Game weighting, payment method and standard bonus terms apply.

Thunderstruck II slot min/max bets, jackpot and volatility

You can play Thunderstruck II slot starting from a minimum bet of 30p and up to the maximum bet of £15.00. This medium to high volatility slot is fun to try for players of all levels and budgets, and you can get a 6,000 jackpot and quite a high RTP rate of 96.65%

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Thunderstruck II slot graphics and sounds

Lucrative free spins are not the only highlight of the Thunderstruck II slot; the game is also extremely beautiful and well done when it comes to graphics and special effects. The slot opens with the video intro full of lightning and thunderbolts. The background, special effects and the colour scheme change during the four different levels of free spins, which keeps the game entertaining and fun. The main four symbols are also fully animated with Thor swinging his hammer or Loki’s hair setting on fire.

Thunderstruck II slot - our conclusion

It’s easy to understand the popularity of Thunderstruck II – it has got probably one of the most profitable and unusual free spins features and a very easy and smooth gameplay. The theme, music and design are absolutely epic. Add to that great return to player and a nice winning possibility, and you’ll understand what made this slot so famous. Give it a spin at one of the best online UK casino mentioned in this review; you won’t regret it!

Watch Thunderstruck II slot video preview below: