Book Of Oil slots from Endorphina

RTP: 96.05%

Drill into the Book Of Oil and tap into vast fortunes!

Overview

Drill down for black gold and unearth some explosive riches in Book Of Oil by Endorphina. This unique casino game takes the legendary “Book of” mechanic and applies it to the high-stakes world of oil drilling. The main gusher is the Free Spins feature with a special expanding symbol, offering a thrilling, high-volatility hunt for a fortune worth up to 5,000x your bet.

Provider	Endorphina
Release Date	2022
RTP	96.05%
Volatility	High
Max Win	5,000x
Theme	Industry / Money / “Book of” Style

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Game Information & Statistics

Feature	Value
Reels	5
Rows	3
Paylines	10
Min Bet	€0.10
Max Bet	€100
Max Win	5,000x
Jackpot	No
RTP	96.05%
Volatility	High
Hit Frequency	Not specified

Theme, Graphics, and Symbols

The theme of Book Of Oil is a powerful and industrial take on the “Book of” genre. The design is slick and modern, with the reels set against a backdrop of a vast oil field dotted with derricks. The graphics are sharp and detailed, with symbols representing the wealth and machinery of the oil industry. An impactful, dramatic soundtrack enhances the feeling of a high-stakes business venture.

Symbols and Payouts

Regular Symbols: Low-paying symbols are represented by card royals (10, J, Q, K, A) with a metallic finish. The high-paying symbols are an oil tanker, a wealthy oil baron, and two different oil derricks, with the larger derrick being the most valuable symbol.

Special Symbols:

Wild/Scatter Symbol: The Book of Oil is the key to the fortune. It acts as both the Wild, substituting for all other symbols, and the Scatter, triggering the Free Spins feature when three or more land on the reels.

How to Play Book Of Oil and Its Bonus Features

This classic slot machine is all about its iconic and high-potential bonus feature, a format beloved by players for its massive win potential.

How to Play Book Of Oil

To start drilling, simply set your bet and hit ‘Spin’. The main objective is to land three or more Book symbols to trigger the lucrative Free Spins round. To understand the power of the expanding symbol, trying the free slot machine demo is essential. This mobile slot is fully optimized for a powerful performance on any device.

Bonus Features and Mechanics

The path to striking oil is through this legendary feature:

Free Spins with Special Expanding Symbol: Landing 3 or more Book symbols triggers 10 free spins. Before the round begins, a regular symbol is randomly chosen to be the special “expanding symbol.” During the free spins, if this symbol lands, it will expand to cover its entire reel. These expanded symbols pay like Scatters, creating wins across all 10 paylines even on non-adjacent reels.
Gamble Feature (Risk Game): After any win, you can risk your prize to double it by beating the dealer’s card.

Understanding RTP and Volatility in Book Of Oil

RTP: The game’s Return to Player is 96.05%, a strong figure just above the industry average that ensures a fair game.

Volatility: With high volatility, Book Of Oil offers a thrilling and risky venture. Players will be hunting for the Free Spins feature, as this is where the truly massive payouts are found. Filling the screen with the top-paying expanding symbol can lead to a gusher of a win.

Our Verdict on Book Of Oil

Book Of Oil is a fantastic and original take on the legendary “Book of” format. The unique theme is brilliantly executed, and the classic, high-stakes excitement of the expanding symbol feature remains as potent as ever. It’s a must-play for fans of the genre and anyone who enjoys high-volatility action with a unique twist. It’s time to drill for your fortune!

Pros	Cons
✅ Unique and powerful oil industry theme	❌ High volatility is not for every player
✅ Classic and exciting “Book of” style feature	❌ The base game can be slow between features
✅ High win potential of 5,000x
✅ Solid RTP of 96.05%