Last Updated: Monday, 03 January 2022 09:26

Thunderstruck slot

Thunderstruck video slot
Thunderstruck slot appeared at Microgaming company’s collection more than 10 years ago, and it is still very popular among the venturesome public, despite the exceptionally classic version of the game with a minimum of the bonus functions.

So, what is the secret of the slot's popularity so long? That will be discussed in the material presented below. In the meantime, let's say that the plot of the game tells about the Torah, the northern god of storms, thunder and lightning. Maybe that these forces will bring you luck and you will be able to win 10,000 coins, by using wild symbols and free spins. On this page, you can play for free the demo version of this slot without registration.

Personal testers opinion

I would not recommend Thunderstruck machine. It does not always keep the balance. Neutral recommendation for completing the bonus requirements - 5,51 out of 10. In usual spins, my maximum winning reached 296x my bet, and the probability of any hit is equal to 30.46%. Free spins can be triggered in 1 spin out of 149 (Statistically, 0,67%).

Hidden parameters and settings of the slot (data from testing)

  • The frequency of triggering the bonus is statistically, every 149th spin (0,67%).
  • The probability of a hit (any winning) is 30,46%.
  • The distribution of the winnings is 76% in the usual spins and 24% in the bonus feature.
  • The maximum payout during the tests was 296x.
  • The average winning from the bonus was 36x.
  • Volatility - 5,32 out of 20 (average).
  • Cycle length - average.
  • The rating of the slot machine for the wagering is 5,51 out of 10.
  • RTP of 96,1% allows getting a positive mathematical expectation at the casino.

Description of the slot machine

Thunderstruck slot consists of 5 reels, three symbols and nine pay lines, the number of which you can change at will. If you want to get the winning, you will need to collect on the active line the combination consisting of three or more identical symbols, which will go from left to right. The diapason of bets that allows you to put on one spin is from $ 0.09, provided that all 9 lines are active up to $ 45. Make sure that the selected denomination coins correspond to your budget. The maximum number of coins in the game is 5.

Yes, this online slot is not rich in the various bonus functions, because it is still representative of the classic category of slot machines. However, it does not mean that you will be bored. One of the main attractions of Thunderstruck 2 slots machine is Wild (Thor) and the free spins mode, in which you can win up to 15 free spins with the coefficient of 3x. The graphics, game mechanics and bonus modes Thunderstruck 2 slots far surpass similar parameters of this slot machine. Moreover, it can be played not only on desktop computers, but also on mobile devices, both in free mode and for real money.

The machine has a medium dispersion. You will have serious victories and fall out the winnings of a small size. Be prepared for the fact that negative spins can happen several times in a row. Therefore it is worth taking care of that the account has funds for at least 200 spins. The percentage of return to the player (RTP) during the usual spins is equal to 96.1%, but during free spins can rise to 97%.


  • The number of reels is 5.
  • The number of possible active lines is 9.
  • The number of coins on each of the lines is from 1 to 5.
  • Cost of the coin - from 0.01 to 1.
  • Diapason of bet sizes is from 0.01 to 45.
  • The maximum winning is 10,000 coins.
  • Wild symbol - yes (Thor. All combinations in which Wild symbol participates are doubled).
  • Scatter symbol - yes (Gold ram).
  • Free spin - yes. (Three symbols of Golden ram launch 15 free spins with the multiplication of the winning by three).
  • Risk game - yes.
  • The expected percentage of payments (RTP) of the slot is equal to 96.1%.

Symbols and payments

The game is based on Norwegian mythology, so you will see on the reels of the legendary Thor, who owns his hammer, the purple coloured rams, Thor horns, lightning and the card symbols with a value from 9 to A. The latter are symbols of a low value, and thematic images bring winnings in larger sizes. All symbols are performed in a cartoon style.

  • The minimum payment is offered to us by card symbols. So, for five dozen and nine, ladies and jacks, the payment will be up to 100 coins.
  • Five kings and aces will pay for 125 coins.
  • A full set of horn and lightning symbols will pay a winning of 250 coins.
  • For five symbols of the blue fortress, the player will receive a payment of 400 coins. The highest symbols in the game are the Torah hammer and Hand holding the sword. For five of these images, the payment will be 750 coins.

In addition to the basic pictures in the slot, there are also two special signs that will help you achieve good results according to the results of the game session. It is a question about a scatter symbol and a wild symbol.

Wild symbol. God of thunder Thor is your wild symbol, which not only appears on the screen frequently but also replaces any sign except for a scatter, which will complete the most advantageous pay combination. Thor also acts as a multiplier, doubling the payout if it participates in the formation of the pay combination. Also, the Wild symbol can bring steep wins on his own:

  • Two wild symbols - 10 coins
  • Three wild symbols - 200 coins
  • Four wild symbols - 2000 coins
  • Five wild symbols - 10,000 coins

Scatter symbol. The ram with the golden horns in the game is the symbol of a scatter. The round of free spins launches the emergence of 3,4 or 5 such symbols. Also, this sign brings payouts (it is enough to put two scatters on reels) in the amount of 2, 5, 20 and 500 coins.

Bonus games and functions

As we have already noted above, Thunderstruck slot does not have a lot of bonus options. In this case, we will talk about free spins and a game for doubling.

Free spins

This function is launched by the appearance of three or more scatter symbols, which give the right to 15 free spins with the multiplication of the win by x3. The victories during free spins can reach x200 total bets, but on average, this parameter is x30. It is safe to say that the most significant payment in the game occurs precisely here.

Gamble feature

As for me, this is a standard risk game that launches after every victorious spin. You can play it, or you can refuse, taking away your winnings. In principle, this is an excellent way for a few seconds to increase your winnings significantly, but the chances of losing are 50%. You are proposed to guess the colour of the card (the winning is doubled) or accurately identify its suit, for which the winning will increase 4 times. The number of spins is not limited.


Thunderstruck machine is a representative of the old school with simple graphics and limited bonus functions. Nevertheless, since its inception, it has remained one of the flagships in the Microgaming company`s portfolio, which has stood the test of time. Besides, the older it gets, the better it looks.

That is a well-balanced slot that emits simplicity, and it can surprise you with excellent payouts. The only disadvantage of the slot machine is the obsolete graphics by modern standards. In my opinion, wild symbols, free spins and RTP raising to 96.1% make this game very entertaining and deserving of your close attention.

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