Book Of Oil Slot by Endorphina

Overview

Open the book and start taking notes about the amount of black gold you’ve got now. Book Of Oil is an online slot game developed by Endorphina. This oil and business-focused game also comes with advanced visuals and bonuses like free spins, expanding icons, and a buy feature.

Graphics & Theme

With the help of this title, you will see how it looks like to run an oil company that has many oil wells. Obviously, you will be very wealthy in this scenario. Visually, players will spot polished shiny icons in various colors and transparent reels placed between golden pipes. You can also expect oil wells and a city skyline filled with skyscrapers behind the matrix.

Gameplay

Book Of Oil comes equipped with 5 reels and has 10 paylines. Next, we have a list of nine regular symbols: five playing card icons, a couple of red barrels, a stack of banknotes, an oil well, and an oil magnate. Getting winning combos requires three or more matching playing card values or two or more high-paying regular icons on a payline.

This time, one symbol plays the role of both wild and scatter icon. We’re talking about the book of oil itself. As a wild, it has the power to substitute for all missing regular icons whenever it helps you finish winning patterns. On the other hand, hitting three or more scatters on the matrix will activate a round of 10 free spins. During these spins, one regular icon becomes an expanding symbol. Also, by paying a side bet (Bonus Pop feature), you can activate the free spins round whenever you want.