Book of Inferno Online Slot

Take journey into the Underworld with the Book of Inferno slot machine by Quickspin. It’s a 5-reel game with 3 rows of symbols and 10 paylines that you can play on PCs, Android, iOS, and Windows mobiles.

Take this virtual journey to Hell and encounter devils, a demon slayer, and powerful book symbols. The book acts as others if needed to complete wins, and also unlocks a free spins round. Marked symbols will expand on their reels, and you get this feature at the start of the free spins.

Play the Book of Inferno online slot and you can win up to 5,846x the stake. It’s a high volatility game with a heck of a good return to players percentage of 96.15% at the best Quickspin slots casinos.

The richly detailed cartoon symbols include metallic card emblems, glowing demons, such as the Commander of Hell, Lady of Hell, and Lord of Hell, plus Anna the Demon Huntress. These characters sit in a 5x3 grid within a decorative frame covered in gargoyles against a backdrop of lava. It’s a dramatic scene, heightened by an ominous soundtrack. Look above the reels and you see all 10 symbols in a row, which becomes important if they become marked and expand to fill reels.

Both the desktop and mobile versions of the Book of Inferno online slot have the same easy to use controls at our recommended Betting Sites. You can pick form a wager range of 0.10 to 100.00 on each spin with a click on the pile of coins button. It equals 0.01 to 10.00 on each of the 10 paylines and if you tap the 3 small lines on the control panel you open a paytable that lists the relative value of each symbol.

You need 3, 4, or 5 matched symbols across a line starting from the left, helped by the book that can act as others if needed. It’s also the most valuable, paying 1x the stake for just 2 on a line, with 3, 4, or 5 books worth 10x, 100x, and 500x the stake respectively.

There are a couple of extra options available, such as an automatic spins feature triggered by the circular arrows button, while the little hurricane starts the reels spinning in fastplay mode. You can also buy into the free games bonus for a one-off wager of 125x the stake.

Symbols can be ‘marked’ at any time. An impressive animation sees a flaming red pentagram appear on the reels and the book rises from it, turning pages to reveal a random symbol. This symbol is then highlighted on the meter at the top of the game, and any examples that land in the next spin will expand to cover all 3 rows of the reel.

This only happens if there are enough to create a win, although marked symbols don’t need to be on adjacent reels to pay a prize. If the book lands on the same spin, it upgrades the symbol to the next most valuable for a bigger win. In practice, this feature won’t always lead to a prize-winning combination, but it won’t harm your chances of a big win either.

The book is also the trigger for a free spins bonus round. Any 3, 4, or 5 in view at once will award 2x, 20x, and 200x the wager respectively, followed by 10, 15, or 25 free spins. More books in a single free game will retrigger the feature.

At the start of the bonus round, one random symbol gets marked for the duration, and it can upgrade at any point during the free games.

Wins can reach 5,846x the stake, or 584,600.00 at the maximum 100.00 wager. This vision of Hell is a highly volatile place, so expect relatively few winning spins countered by higher-than-average prizes. The return to players percentage is good at 96.15%.

The dramatic topic and impressive graphics will draw in many players, but the devil is in the detail, and we’re pleased to report that the gameplay and features are just as impressive as the looks.

It’s the marked symbols that make the Book of Inferno slot such a hit, with the book selecting symbols at random to expand and perhaps form valuable combinations, especially with the upgrades. We found this feature to trigger quite often, both in the base games and it’s always active during the free spins bonus round.

Will the Book of Inferno slot machine make its mark? Play it at the best Online Casino sites featured here to find out.