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Book of Demi Gods IV Thunderstorm Slot - Review, Free & Demo Play

Book of Demi Gods IV Thunderstorm
Book of Demi Gods IV Thunderstorm
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Updated: 22.07.2025
Reviewed by: Ella Houghton
Welcome the new installment in Spinomenal's beloved series about Greek deities - Book of Demi Gods IV Thunderstorm! This slot was released on 21/11/2022 and it once again features the characters that you know and love from previous titles, namely Hermes and Apollo & Artemis and Athena.Still, what else is there about Book of Demi Gods IV Thunderstorm? What features does this game have, how many can you win here, and/or is it any good? Let's find out as we review Book of Demi Gods IV Thunderstorm and see how good this slot is!

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In this review
  1. Slot details
  2. Theme
  3. Bonus Rounds & Free Spins
  4. Summary
  5. Where to play
General information about Book of Demi Gods IV Thunderstorm slot

General information about Book of Demi Gods IV Thunderstorm slot

Rating by Ella Houghton:
8.2
User’s Rating: Not rated yet
Spinomenal
Write a review +25 SJ points
  • Release Date:
    21.11.2022
  • Volatility:
    High
  • RTP:
    96.2%
  • Multiplier:
    No
  • Max. win:
    10,000x
  • Bonus game:
    No
  • Free spins:
    Yes
  • Scatter Symbol:
    Yes
  • Wild symbol:
    Yes
  • Symbol Stacked:
    No
  • Jackpot Game:
    No
  • Slot lines:
    5
  • Slot reels:
    5
  • Layout:
    5-3
  • Stakes range (€/£/$):
    0.05 to 50
  • Slot Theme:
    Ancient gods
  • Technology:
    HTML5
More infoLess info

Licensed and tested by

  • Gambling Comission
  • MGA
  • ONJN

How to Play

The gameplay of the Book of Demi Gods IV Thunderstorm is relatively simple: the gamefield here consists of 5 reels and 3 rows, and there are only a couple of features and 5 fixed paylines. Moreover, there is even a free version of the Book of Demi Gods IV Thunderstorm, which offers an opportunity to play this slot free of charge, to learn how it works, therefore you can easily learn how to play this new slot!

  • To start playing, launch Book of Demi Gods IV Thunderstorm (whichever version you prefer - for real money or demo) and click start when the slot loads
  • Next, select the size of your stake, by clicking on the coin symbol. In Book of Demi Gods IV Thunderstorm the bets range from €0.05 to €50
  • Then, press on the icon with cogwheel and then click "Paytable". Be sure to read through the information in this section, as it will help you understand how to play Book of Demi Gods IV Thunderstorm, how much each symbol is worth etc
  • You can start playing whenever you're ready and you have two options on how to begin the game: if you want to play with a free spins mode activated, then you can click on the "Buy Feature" icon and purchase free spins, which will start the game automatically. Alternatively, you can also play the basic version of the Book of Demi Gods IV Thunderstorm, by pressing the spin or autospin button!

Book of Demi Gods IV Thunderstorm RTP and Volatility

8.2 
Book of Demi Gods IV Thunderstorm has a high volatility and an RTP of 96.18%.
Because the volatility of the Book of Demi Gods IV Thunderstorm slot is high, here you can expect larger payouts, which will occur a bit less frequently, so if you would prefer to win larger sums are fine with bigger risk, then Book of Demi Gods IV Thunderstorm would be a fine option for you. Speaking of fine, the Return to Player of the Book of Demi Gods IV Thunderstorm - which shows how much money the slot pays back after your win - is at 96.18% and this is a decent, above average value.

Theme

9 

Much like all the other previous slots from the Demi Gods series, Book of Demi Gods IV Thunderstorm has a theme of the Greek Gods. And, just like in the previous titles from this series, the design of this slot is really nice-looking and detailed.Specifically, Book of Demi Gods IV Thunderstorm features a great, animated backdrop with pouring rain and thunderstorm.

Other than that, the game also has a simple yet visually pleasing design of the game board, and there is also music that plays in the background. So overall, the theme and the design of the Book of Demi Gods IV Thunderstorm is not particularly novel, and we have seen similar theme in the previous games from this series, yet it's hard to deny that visually this online slot still looks really great.

Now let's look at the variety of symbols that you can find in the Book of Demi Gods IV Thunderstorm slot. The symbols in this game are divided into 3 categories: low symbols, medium symbols and special symbols. Low symbols are 10, J, Q, K and A; medium symbols are the main characters of the Book of Demi Gods IV Thunderstorm slot: Artemis, Athena, Apollo and Hermes and one of these symbols will also become expanding during the Free Spins round.

Meanwhile the only special symbol that Book of Demi Gods IV Thunderstorm has is Wild, which also acts as a Scatter. That means that this symbol - which looks like a book - will substitute for all other symbols, will pay and also trigger the Free Spins feature when you land on 3 of these symbols.

Theme
Book of Demi Gods IV Thunderstorm Slot - Paytable

Mobile Compatibility

Book of Demi Gods IV Thunderstorm Slot Mobile
You should be able to play Book of Demi Gods IV Thunderstorm on any mobile device, as long as it is somewhat modern and has a stable network connection. What is extra great is that there is no need to download an app if you want to play Book of Demi Gods IV Thunderstorm on mobile, and instead you can launch this slot on any mobile browser. Plus, all the features remain the same no matter where you play!

About Spinomenal

An Israel-based provider, Spinomenal is one of the larger providers in the iGaming industry, with a huge portfolio of more than 100 games, such as Book of Elves, Reindeer Rampage, Trojan Tales and many others. In addition to a great reputation as a reliable and trustworthy company, Spinomenal also has a lot of good accomplishments, such as the fact that they obtained a lot of licenses and received several certifications, like ones from BMM Testlabs and eCOGRA.

Bonus Rounds & Free Spins

8.5 

Free Spins

The Free Spins feature will be activated whenever you land on 3 Scatter symbols. Thereafter, you will get 10 free spins and will be presented with an opportunity to spin the wheel. This wheel consists of medium symbols, and whichever symbol you land on will become expanding till the end of the feature.Book of Demi Gods IV Thunderstorm Slot - Free Spins

Expanding Symbols

Expanding symbols - which is only available in the Free Spins mode - will expand and will help form new, additional paylines, and will pay like a regular symbol.Buy Feature Thanks to the Buy Feature, you can skip the waiting and just start the Free Spins feature whenever you want! The price of this bonus buy varies depending on your current stake, and right after the purchase you will get 10 free spins with a random expanding symbol.

Buy Feature

Thanks to the Buy Feature, you can skip the waiting and just start the Free Spins feature whenever you want! The price of this bonus buy varies depending on your current stake but is always 104x the bet, and right after the purchase you will get 10 free spins with a random expanding symbol.

Book of Demi Gods IV Thunderstorm Demo Play

The demo is a special version which allows you to play Book of Demi Gods IV Thunderstorm for free. What is noteworthy is that the demo is identical to the real money version of this God-themed slot, with the only difference being that you cannot win real cash in the demo. On the other hand, you also don't have to pay or register at a casino.

Max Win

7 
The grand prize of the Book of Demi Gods IV Thunderstorm slot is worth 10,000x.
The max win that Book of Demi Gods IV Thunderstorm offers is indeed very huge, and if you are lucky it's possible to win up to 10,000x in this game. This is a really incredible winning potential, and what's even better is that there are bonus features that can provide assistance. You have free spins, expanding symbols and even the option to purchase and activate Free Spins feature whenever you want, which is incredibly useful.

Book of Demi Gods IV Thunderstorm Big Win

✅ Try this slot for free on our website - https://slotsjudge.com/online-slots/book-of-demi-gods-iv-thunderstorm/ Hi everyone! In this video we’ll show you bonus game in Book of Demi Gods IV Thunderstorm from Spinomenal. The slot machine has high volatility and RTP of 96.2%. The playing field consists of 5 reels and 3 rows, the minimum bet starts with $0.25, and the maximum bet reaches $50. By the way, the maximum winnings are 10'000x of the bet size.The main features of the machine are Free spins, Scatter Symbol and Wild Symbol,. Write in the comments, have you played Book of Demi Gods IV Thunderstorm from Spinomenal and how do you like the winnings presented in this video! No links used during live stream or in the description are transaction links. 18+ | Play Responsibly | Begambleaware.org. #slots #onlinecasino #bigwin

Overall Rating

8.2
If you are a fan of Spinomenal's Book of… series, and especially Demi Gods slots, then you should absolutely check out this new addition to this brand's gaming collection. Overall, Book of Demi Gods IV Thunderstorm is an engaging, fun and interesting video slot, with a pretty design, a great RTP and features and an even greater max win, which would no doubt be attractive to players that look for slots with big max wins!
Hits
Huge max win of 10,000x
Nice-looking graphics
Has an opportunity to purchase free spins
Above average RTP
Misses
Only 5 paylines

Book of Demi Gods IV Thunderstorm Slot - FAQ

Is there a jackpot in Book of Demi Gods IV Thunderstorm slot?

No, Book of Demi Gods IV Thunderstorm has no jackpot.

Which symbol pays the most in Book of Demi Gods IV Thunderstorm?

The highest paying symbol in the Book of Demi Gods IV Thunderstorm slot is the symbol of Hermes.

Can I retrigger free spins in Book of Demi Gods IV Thunderstorm?

Yes, you can get 10 more free spins if you land on 3 Scattered Wilds.

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Ella Houghton
Ella Houghton
Expert in: News, Blog, Slot reviews, Payments
Ella is a professional content-writer with 8 years of experience in the casino sphere. She has broad knowledge of gambling related themes and is happy to share this with Slotsjudge.

2126 articles

Reviewed by Editor-in-Chief
Nikita Lukanenoks

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