”Book of…” slots come in many different forms. While most stick to the Egypt genre, Booming Games has decided to go under the sea for its version. Called the Book of Poseidon, it’s easy to guess what the exact type of slot this is. While it is definitely a “Book of…” title, it includes a few twists and turns that make it unique.

The slot has an RTP of 95.86% and is of high variance. Typical for this niche of slots, it comes with 10 fixed paylines. The maximum win is familiar too – 5,000x your stake. What makes it unique are up to 9 expanding symbols in the Bonus Round that can deliver big wins.

Book of Poseidon is available for free, for real money, and with the best slot bonus at any Booming Games casino. Dive deep into the ancient underwater kingdom and you might discover the long-lost fortune of Poseidon.

In terms of layout and design, the Book of Poseidon slot doesn’t reinvent the book (not that book). It’s a straightforward slot with a 5x3 setup set against a background of the deep blue sea. The reels are populated by sharks, a book in a bed of seashells, and Poseidon himself. It’s not hard to guess which symbols pays the most. Land 5 Poseidon symbols and you win 500x your wager. It’s as simple as that.

The Book Scatter/Wild pays handsomely as well – 200x for the same combination. The other majors such as the octopus and shark deliver solid returns, which can’t be said about the card royal minors.

All the controls are on the right side of the reels except for the wager adjuster in the lower left. Booming Games has done a great job with the visuals and audio, so the Book of Poseidon looks pretty sharp.

The Book of Poseidon slot was produced on the HTML5 platform. It’s available on all Android and iOS devices, regardless of whether you’re playing it on a smartphone or tablet at new online slot sites.

Before you dive into the slot, you should place a wager. The lowest available is $0.10 while the highest is $50 per spin. Choose what suits you best and hit the Spin button to start playing.

Book of Poseidon is a typical “Book of…” slot in the base game. You line up premiums mixed up with the Book (Scatter/Wild) to land winning combinations. The good news is that Poseidon himself can deliver wins up to 500x your wager. The bad news is that there are no other special features to get excited about.

You’ll find much better action in the Bonus Round thanks to Expanding symbols.

Three or more Books play the role of a Scatter that triggers the Bonus Round. You get 8 free bonus spins to start with. At the same time, the Book pays solid sums of cash between 2x and 200x depending on the number of Scatters. Before the Bonus Round begins, a symbol is chosen as the Expanding one.

What makes Book of Poseidon different than other “Book of…” slots is the fact that you can get up to 9 Expanding symbols. Every time 3 or more Scatters land, you get 8 new spins with a new Expanding symbol. This can occur up to a maximum of 9 times, and if you’re lucky, that’s where you can land the biggest wins.

The RTP of the Book of Poseidon online slot is 95.68%. It’s a highly volatile slot game that can pay up to 5,000x your stake if you fill the screen with Poseidon symbols in the Bonus Round.

Book of Poseidon stays true to the “Book of…” niche but adds more excitement with extra Expanding symbols. It’s a slot that feels familiar, but that doesn’t mean Booming Games botched the job on this one. With a bit of luck, the Bonus Round can be very exciting, delivering a treasure buried deep under the sea up to 5,000x your stake. Enter Poseidon’s underwater kingdom at top online slot sites.