Book of Oil slot
The design of the Book of Oil slot perfectly conveys the scorching nature of the gameplay, although mechanically, the emulator demonstrates a classic set of attributes: Wild+Scatter, paylines, a gamble round to double winnings, and a series of bonus free spins. In the latter, a symbol is randomly chosen to gain the 'expanding' property. This is the main highlight of the Book of Oil slot machine, which gives the FS series special value.
Book of Oil Game Review
| Original Title | Book of Oil |
|---|---|
| Developer | Endorphina |
| Release Date | September 23, 2021 |
| Mechanics | Paylines (10) |
| Volatility | Medium (3/5) |
| Bet Range ($, €, £) | 0.01 – 100.00 |
| Potential | x5000 |
| RTP | 96,05% |
The design of the Book of Oil slot perfectly conveys the scorching nature of the gameplay, although mechanically, the emulator demonstrates a classic set of attributes: Wild+Scatter, paylines, a gamble round to double winnings, and a series of bonus free spins. In the latter, a symbol is randomly chosen to gain the 'expanding' property. This is the main highlight of the Book of Oil slot machine, which gives the FS series special value.
Gamble Game
Another opportunity to win many times more than a regular successful spin offers is to take an additional risk and try to double the current win amount. This option is found in many slot machines released in the nineties and 2000s, but is undeservedly ignored in more modern 'one-armed bandits'. The creators of the Book of Oil slot online did not follow the majority and added the Gamble feature:
- If the spin resulted in a win, the player has the option to start the risk game.
- To start it, press the card icon button on the left side of the control panel.
- The goal is to 'beat the dealer's open card' by choosing any of the four face-down cards.
- If you choose correctly, you can repeat your success by trying to double your winnings again.
As with other gaminators, you can play the Book of Oil slot to double your winnings up to 10 times in a row. At any point, you can choose to stop the round and collect your current cash prize.
Payout Multipliers
The only special symbol in the game is the Safe-Book with a valve. This acts as both a Wild, replacing other symbols, and a Scatter, which, when three or more appear anywhere on the grid, triggers a round of 10 free spins. Book of Oil slot machine payout coefficients for a 1 unit bet:
| Symbol | 2 in a line | 3 in a line | 4 in a line | 5 in a line |
|---|---|---|---|---|
| 10 | - | 0,5 | 2,5 | 10,0 |
| J | ||||
| Q | ||||
| K | - | 0,5 | 4,0 | 15,0 |
| A | ||||
| Money | 0,5 | 3,0 | 10,0 | 75,0 |
| Barrels | ||||
| Oil Rig | 0,5 | 4,0 | 40,0 | 200,0 |
| Tycoon | 1,0 | 10,0 | 100,0 | 500,0 |
| Book | - | 2,0 | 20,0 | 200,0 |
Book of Oil for Real Money
When playing for real money, the maximum payout from a successful spin can range from x0.5 to x500. The risk game can significantly increase the prize, but it will be useless if an Ace is the revealed card. For greater convenience, the emulator allows you to select the number of paylines, while the bet on each can range from 1 to 35 units. Some versions of the Book of Oil slot also allow you to adjust the coin denomination, which enables playing for cents while still being eligible for a large cash prize.
Book of Oil Demo
The best way to test the slot machine, get used to its volatility, and study its other features is through the demo game. Demo bets will not yield real winnings, but they will allow you to:
- spin the reels and understand the payout mechanism;
- check the RTP and its changes during the process;
- test the online slot with different settings;
- play a session to collect useful statistics.
This is also an ideal option for beginners who are encountering a virtual slot machine for the first time and are not yet ready to risk their own money. The demo is available to all user categories and has no time limit, allowing you to test the slot for as long as needed before confidently transitioning to the real money 'live' mode with actual bets.
Book of Oil Max win (maximum win)
Both demo and real money gaming sessions will be forcibly terminated once the gambler manages to win x5000 of their current bet. This is the 'ceiling' set by the developers for this slot machine, meaning if you play for real money, the maximum win in Book of Oil can be 350*5000 = 1.75 million units. The provider has configured the machine for medium volatility, where the frequency of large and small payouts is approximately equal.
Book of Oil RTP (slot payout)
The slot has a standard theoretical return percentage for a Paylines slot (Return to Player) – 96.05%. This indicator is calculated over a large number of spins (over 1 million), so it does not always reflect the actual return in relatively short sessions. It also does not account for the probability of payouts in the risk game, allowing you to focus on the potential return without incorporating Gamble-risk into your strategy.
Play Book of Oil Online
Safely playing the Book of Oil slot is only possible with the original licensed version of the game. This can be found on many top gambling platforms in the Russian internet segment:
- Vavada,
- 1Win,
- Mostbet,
- 1xBet,
- Joy Casino,
- Casino X.
When launching the slot on other platforms, you should ensure that the online casino holds a valid license and officially partners with Endorphina. Only in this case will you be able to play with due confidence and receive assurances that the simulator is configured for fair randomness.
Technical Support
If the Book of Oil demo slot malfunctions, it is recommended to contact the gaming site's customer support service. All claims regarding any bugs should also be directed to support, which is responsible for the stable operation of the emulator. Playing the slot for real money is recommended only after a trial demo session, which will help identify any possible shortcomings.
FAQ
Is the Book of Oil slot adapted for smartphones?
Does this game feature Auto and Turbo modes?
What are the differences between playing Book of Oil in demo mode and for real money?
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