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Book of Oil Online Slot (Endorphina)

Book of Oil slot is a 5 reel, 10 paylines game from Endorphina. On this page you can try Book of Oil free demo for fun and learn about all features of the game, without risk of loosing any money. If you want to play this game with real money you can find our collection of trusted and recommended online casinos further down this page.

Responsible Gaming

You have to be 18 years or older to access our demo games. Please confirm that you are at least 18 years old:


Facts & Features

RTP ? : 96.05%

Max Win: 5000x

Slot Rating: 7.8 / 10

Buy Feature, Expanding Symbols, Gamble, Retrigger, Scatter Pays, Special Symbol, Wilds,

Slot Themes

American, Oil, Wealth,

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Book of Oil Review

Book of Oil by Endorphina is an online slot which is playable on most devices, including mobiles and pads. This game has some interesting themes and exciting features to know about. Find out more from our Book of Oil slot review below. Further down this page you can also find more popular slots from Endorphina.

Game Features

Who doesn't like plenty of action and great features in a slot! Some of the most popular features available in Book of Oil is Buy Feature, Expanding Symbols, Gamble, Retrigger, Scatter Pays, Special Symbol, Wilds, It also has a bonus game, the most liked free spins bonus rounds and if you are lucky this is usually where you can win the big bucks.

Themes and Gameplay

Book of Oil is designed with themes like American, Oil, Wealth, in mind. The layout of this game is pretty standard and consists of 5 reels with 10 possible paylines. In most jurisdictions you can also select the Autoplay option when playing Book of Oil. You can choose from 10, 25, 50, 100 or even more spins. You can opt to stop Autoplay on a win, if a single win exceeds a certain amount, or if your balance increases or decreases by a chosen amount. This is a great way to stay in control and to play more responsibly.

Book of Oil gameplay

Maximum Win, RTP and Volatility

Here you have the potential to win 5000 times your total bet. This can give you very big wins if you manage to hit some high paying symbols. This value is calculated on a very large number of spins, often a billion spins.

The RTP for Book of Oil is 96.05%. This is good and about average for an online slot. RTP stands for Return to Player and is the percentage of stakes the game returns to the players. For example, if a player bets €10 the expected return for this game would then be €9.605. However, the RTP value is calculated over millions of spins which means the outcome of every spin will be totally random.

Reviewed 9/22/2021 by

Slot Rating: 7.8 / 10

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