Endorphina's Book of Oil slot has a classic game board consisting of 5 reels, each with 3 symbols. Payouts are on 10 paylines.
The bet is placed before each spin. The minimum bet leaves 1 cent and the maximum bet is 100 euros.
To get a payout, you need to collect a combination of identical symbols on one of the paylines.
There is a risk game in the slot that allows you to increase your winnings by guessing the hidden card.
Book of Oil Visuals and Sound
The slot machine looks good. All symbols are well-drawn, and the sound effects complement the gameplay perfectly. The game is enjoyable and even stunning.
Book of Oil Online Slot: Wild, Scatter and Other symbols
All symbols in the slot can be divided into two categories:
Special: The book.
Normal: All other characters.
The book symbol is universal, which means it can be used in creating any combination. It also launches the free spins, as detailed below.
In the main menu of the game, you will find the paytable of the slot machine.
Book of Oil Slot Bonus Games
The game has a special feature:
Buy Feature — You can activate free spins for a fee.
Book of Oil Free Spins
Free Spins are activated when 3 books fall. A symbol is chosen before the spins begin, and if it lands it will expand to cover the entire reel.
Book of Oil Slot RTP, Volatility and Win Frequency
The technical parameters of the game are as follows:
Book of Oil RTP: 96.05%.
Volatility: High.
Win Frequency: No data from Endorphina.
A high level of volatility will not allow you to win often, but winnings sizes can be quite large. The casino's mathematical advantage is average here. We recommend that you take these parameters into account when playing.
How to Play the Book of Oil Slot Machine
To start the game, you must:
Start slot.
Select your bet.
Spin or start the auto mode.
Wait for the game round to end and get your winnings.
The interface of the slot is as simple and straightforward as possible. On the lower right side are the buttons to enter the main menu, start the spin, activate fast spins, activate autoplay and select a bet. On the left is the button to activate free spins.
Mobile Version of the Slot Machine
Book of Oil slot from Endorphina has a convenient mobile version that is launched when playing from smartphones or tablets. Please note that for a comfortable game, you need a device that supports a modern browser. Please note that the game is only possible with a stable internet connection. The rules of the game don't change when you use the portable version of the slot.
When playing from your phone or tablet, there is no need to download the slot — it launches in the browser.
Conclusion
Overall, the slot has performed well. Let's highlight its pros and cons.
Advantages:
Nice graphics and sound;
availability of a bonus game;
High volatility;
Buy feature.
Disadvantages:
Medium RTP.
Where Can I Play Book of Oil Slot for Free Without Registration?
If you want to try the Book of Oil slot risk-free, you can play in the demo mode on our site. Once you're ready for some real play, register with us and you’ll be good to go.