Book of Power (Relax Gaming) Slot Review


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Book of Power: Slot Overview

Many of you surely know the famous „Book“ games. These games are inspired by Novomatic’s Book of Ra and count towards the most played online slot games of all time. Probably because they are pretty simple and easy to understand. Almost every online slot provider out there has one of these in their repertoire. But now and then providers tend to play with the general principle of these games and expand them. And that’s exactly what Relax Gaming did with Book of Power.

Book of Power is played on 5 reels with 3 rows and 10 set paylines. Relax Gaming themselves give Book of Power a 5 out of 5 volatility rating, making it a highly volatile game. Bet sizes range from 0.10€ to 60€ (or equivalent), but may vary depending on where you play.

For the design of winning symbols, Relax Gaming didn’t go too much out of their way. There are 9 winning symbols in total, with 5 lower symbols and 4 higher symbols. For the lower symbols Relax Gaming went with the classic winning symbols from 10 to A, which are present in almost every Book game. Thus they also share a similar payout. For 10’s, J’s and Q’s you will be rewarded with 10-times your bet size for a full line. Next up are already K’s and A’s for 15-times your bet size.

On the higher end Relax Gaming got a bit more creative. Here you will find the blue Pyramid and the green Scarab Altar, both for 75-times your bet size for a full line. Second to last symbol will be the Pharaoh with the golden mask for already 200-times your bet size. And last but not least, our top symbol will be the Explorer for 500-times your bet size per full line.

Book of Power: Special Symbols and Stats

Book of Power Slot - Basegame

As with many Book games, Book of Power features a single Special symbol. This Special symbol is of course the Book of Power itself. It is portrayed by a blue cover with a scarab on it. The book has two major functions.

The first one is being a Scatter symbol. If you manage to land 3 books in the same spin, you will be rewarded access to the Free Spins Feature. But here we already find a change to the classic Book games. You see, there is also a Book with a red cover. How to get it, what exactly it does and how the Free Spins work will be covered in our Feature Overview section.

The second feature is being a Wild symbol. As a Wild symbol, books will always substitute for any winning symbol. That’s why a full line of books will always count as a full line of an Explorer.

Alright, now it is time to bring you some stats about Book of Power. The game comes with a base RTP of 96.11%. The max win potential of Book of Power is capped at 15,000-times your base bet size, making it capped way higher than usual Book games. On average you will get a win once every 3 to 4 spins (30.70% hit frequency). And that’s about everything we can tell you here.

Book of Power: Feature Overview

Book of Power - Free Spins with retrigger

As we already mentioned, Book of Power is no ordinary Book game. And now that we’re in the Feature Overview, you will see why.

  • Power Bet

Before we begin explaining the Free Spins Features, we will describe the Power Bet. This feature can be turned on or off in the lower left corner of the screen. When turned on, your bet will be doubled. During Power Bets, you will have a 170% increased chance of triggering a Free Spins Feature. Another thing you will notice is, that books can now have a red cover. These special books are required to get into the Power Free Spins.

  • Free Spins Feature

The Free Spins Feature is triggered when 3 or more books land in a single spin. Depending on how many books have landed you will get 10, 15 or 20 Free Spins for 3, 4 or 5 books respectively.  Before your Free Spins start, a random winning symbol is selected. This will be your special symbol. Now every time your special symbol has landed often enough that it could be a win on its own on a line, it will expand. So for example, 10’s would expand if 3 or more are visible, Explorer would already expand at 2 visible symbols. When your symbol expands, it will pay its value on all 10 winning lines, no matter on which reel they land. Important to know is, that the Wild symbol will not substitute for expanding symbols.

Retriggering is also possible and even vital. You might have already noticed that the screen expanded. You now have a bar on the left, showing you all the symbols, and the one you got is lit up. Upon retriggering, with 2 or more books in one spin, you will be granted 5 additional Free Spins, as well as another special symbol. But it can also happen that your symbol is chosen again. In this case, your symbol will get a +1 mutliplier. We cannot clearly say if this only counts for expanding wins or also line wins. The feature will end once every spin has been used or the max win potential has been reached.

  • Power Free Spins

The Power Free Spins Feature really has power in it. It differs greatly from the normal Free Spins Feature. First, you will need 3 or more books in the same spin, but one has to be a book with a red cover. If you managed to get that, you will be awarded 10, 15 or 20 Free Spins with 3, 4 or 5 books respectively. Before your Free Spins start, a random winning symbol is selected. This will again be your special symbol, which will expand when it lands often enough that it would form a win.

Retriggering is also vital here, because you will need to progress. On the left you will see a progress bar that you will need to climb. The bar will always have the Explorer as the highest symbol. Upon retriggering with 2 books, you will be granted 5 extra Free Spins and advance by 1 symbol. If you retrigger with the Explorer, he will get a +1 multiplier up to x9.

But that’s not all. As you might have noticed, above reels 2, 3 and 4 are little lamps. Whenever a Power Book (with a red cover) lands on one of these reels, these reels light up. What this means is that these reels will always count as carrying your expanding symbol. So your expanding symbol does not need to land on this reel in order to get it. The feature will end once every spin has been used or the max win potential has been reached.

Power Books also count like a normal book, so retriggering with them is possible.

  • Bonus Buy Feature

Book of Power also comes with a Bonus Buy Feature. For 100-times your bet size you can buy a normal Free Spins Feature with 3 guaranteed books. And if you’re brave enough you can also buy the Power Free Spins for 200-times your bet size. Be aware though, that Book of Power is a highly volatile slot, so be careful when buying bonuses. The RTP for Bonus Buys is 96.50%. It is not stated if this counts for both Features, but we do think so.

Book of Power Slot - Power Spins Bonus

Book of Power: Conclusion

So, what can we say about Book of Power? First and foremost, it is a Book game. Relax Gaming went in with the premise to create something innovative and fresh. And while the general approach isn’t something no one has ever seen, it brings a fresh wind with it.

Both the normal Free Spins and the Power Free Spins are not entirely new features. Especially the normal Free Spins Feature is something we have seen a lot. But the Power Free Spins Feature is special. This feature is heavily inspired by Novomatic’s Book of Ra Fixed, which features a very similar design. Unfortunately, this game is not available online, and there are not even a handful of games that tried to immitate this style. But Book of Power could be the number 1 contender.

After all, Book of Power is a very solid game with a beautiful design. We have no doubts that it will get a lot of attention by all kinds of players. This concludes our online slot review about Book of Power. We had lots of fun testing it. Hopefully we answered all of your questions without leaving anything open.