Play Book of Poseidon Slot

If you’ve ever wondered what Poseidon does when he’s not busy stirring up tempests or bossing around sea creatures, Booming Games has the answer — he’s starring in his own slot, Book of Poseidon. This isn’t the first time a mythical figure has graced the reels, but Poseidon brings his trident and an unmistakable aura of oceanic authority to the familiar “Book of” format. Yes, it’s another slot where the sacred Book serves as both Wild and Scatter, but this time, we’re swapping out dusty tombs for deep-sea treasures. 

The action unfolds on a 5x3 grid with 10 fixed paylines. Bets start as low as 0.10, making it accessible whether you’re a casual spinner or someone with a more adventurous spirit. The highlight here? Unlimited free spins with special expanding symbols. And if that’s not enough, the gamble feature adds a little extra tension — because who doesn’t like the prospect of doubling (or quadrupling) a win with a flip of a card? 

Booming Games has carved out a niche with titles like Majestic Safari and Buffalo Hold and Win, but Book of Poseidon dives into new thematic waters — literally. It’s a slot that combines the allure of ancient mythology with the tried-and-true mechanics players tend to love. 

Here’s how you can get started and play Book of Poseidon for yourself: 

1. Sign in to your account at Heart Bingo. 
2. Head to the online slots page. 
3. Search for “Book of Poseidon” and click the game when it appears. 
4. Once it's loaded, click on the pile of coins to find an appropriate stake size. 
5. Click the Spin button to get the reels moving. 

If you aren't already registered, click on the green 'Sign Up' button in the top right corner and fill in the required fields. You can then verify your account and make a successful deposit if you want to play Book of Poseidon with real funds. 

The symbols in Book of Poseidon are divided between high-paying "Majors" and the standard card royals. Poseidon himself is the top symbol, followed closely by his aquatic companions — the Kraken, the dolphin, and the turtle. Here’s how the payouts stack up: 

The Book symbol is the multitasker here — it’s both the Wild and the Scatter. As a Wild, it steps in for any regular symbol to complete winning combinations. As a Scatter, landing three or more triggers the Free Spins bonus and delivers an instant payout (2x, 20x, or 200x your stake for 3, 4, or 5 Books, respectively). 

Free Spins with Expanding Symbols

Land three or more Book symbols anywhere on the reels, and you'll unlock 8 Free Spins. Before these begin, a random symbol (excluding the Book) is chosen as the special expanding symbol. During the Free Spins, this symbol will expand vertically to cover the reel whenever it contributes to a win. Even better? If you retrigger the bonus (by landing another 3+ Books), you'll get another eight spins and an additional special expanding symbol — up to a potential nine expanding symbols in total. 

Expanding Symbols Payouts

What makes these expanding symbols stand out is that they pay regardless of whether they land on consecutive reels. So, even if there’s a gap between them, they’ll still deliver a payout as long as there are enough on the reels — 2 for Majors or 3 for Minors. 

Gamble Feature

After any win, you have the option to gamble your payout. You'll be prompted to predict the colour of a face-down card to double your winnings or guess the suit for a 4x multiplier. It's a simple but effective feature for those who like to add a dash of risk to their rewards. 

If you enjoy Book of Poseidon, you'll likely appreciate other "Book of" slots with a more mythological or even adventurous twist. Titles like Book of Dead by Play'n GO or Book of Ra Deluxe have similar mechanics with different thematic flavours.