Book of Oil

Endorphina's video slot, Book of Oil, features a setup of 5 reels and 3 rows, along with ten fixed paylines. The game centers on an oil theme, highlighting elements like barrels, derricks, and affluent oil tycoons, all presented against a backdrop that combines industrial and golden aesthetics. The Book symbol acts as both a Wild and a Scatter, and landing three or more of these symbols anywhere on the reels triggers ten Free Spins.

In the Free Spins round, a special symbol is randomly chosen to serve as the expanding symbol. When this symbol appears in sufficient numbers, it can expand to fill an entire reel, allowing for winning combinations even if the symbols are not adjacent, as long as the line remains active. However, during the Free Spins, the Wild cannot replace the expanding symbol. Additionally, players can access the Free Spins round directly through the Bonus Pop feature for a specified cost.

After any win, players have the chance to participate in a Risk Game, where they can try to double their winnings through a mini-challenge. Depending on the game version, the maximum payout in Book of Oil can reach up to 5000 times the stake. This slot is compatible with both mobile devices and computers, offering a range of betting options from lower to higher amounts, based on the casino.

You can play it for real money.