Book Of Wolves Slot Review
Snow drifts through a midnight-blue sky, evergreens stand dark along the frame, and a pale full moon glows behind the title with a faint halo. Book Of Wolves is Spinomenal‘s take on the most crowded formula in online slots, and nearly every decision here is the standard one: a 5×3 grid, 10 fixed paylines, and a scatter-wild book that opens a free spins round built around an expanding symbol.
The number worth arguing about is the RTP. At 93.96%, it sits below where most Book games sit, including the studio’s own Book Of Wolves Full Moon, a quiet take on the same forest that earned our approval in 2026. The mechanics themselves are familiar territory for anyone who has spun Book Of The Night Wolf or the Wolf Fang series. The richest result the reels can produce is five Wolves on a line, worth 50,000x the total bet.
Symbols and Paytable
The reels carry a northern cast: Wolf, Bear, Moose and Owl up top, with A, K, Q, J and 10 filling the lower rungs. All symbols pay left to right from the leftmost reel, only the highest win on each line counts, and wins are multiplied by the bet per line. Multiple qualifying lines in one round add together into the total.
Per symbol, as multiples of the total bet:
- Wolf: 2 pays 100x, 3 pays 1,000x, 4 pays 10,000x, 5 pays 50,000x
- Bear: 2 pays 50x, 3 pays 400x, 4 pays 4,000x, 5 pays 20,000x
- Moose and Owl: 2 pays 50x, 3 pays 300x, 4 pays 1,000x, 5 pays 7,500x
- A and K: 3 pays 50x, 4 pays 400x, 5 pays 1,500x
- Q, J and 10: 3 pays 50x, 4 pays 250x, 5 pays 1,000x
The ladder tells its own story. The Wolf pays from just two on a line, which is unusual in itself, and it’s a long way clear of the Bear in second place: five Bears returns 20,000x against the Wolf’s 50,000x. The royals, as ever, are filler, and the gap between the picture symbols and the card values is wide enough that any win built on A or below is small change.
The Book itself is both wild and scatter. It counts as any symbol on the reels, and when three or more land scattered anywhere it pays on top of everything else while also triggering the free spins round:
- 3 scattered Books: 2x the total bet
- 4 scattered Books: 25x the total bet
- 5 scattered Books: 250x the total bet
Scatter prizes are paid in addition to regular payline winnings, so a full screen of Books both pays the scatter award and opens the bonus round. Because the Book substitutes for every symbol, it also completes ordinary line wins on the reels in between, which is what keeps the base game ticking over while you wait for three of them to land at once.
Bet per line is set with the plus and minus buttons, and both are disabled while free spins run. Auto play offers a configurable number of continuous spins at the selected bet, pausable at any time, and Turbo Mode shortens each round for those who want the reels to hurry up. Help and Settings buttons lock during a spin, and every win in a round is displayed in the WIN field as it lands. The full list of winning combinations and payouts sits in the paytable.
Free Spins and the Expanding Symbol
Three or more scattered Books award 10 free spins, played at the same bet per line as the round that triggered them. What happens next is the one flourish this game adds to the formula: a wheel of all the symbols except the Book itself, spun to decide which one expands for the whole round.
The round runs in a fixed order once it opens:
- Land 3 or more scattered Books anywhere on the reels.
- Collect the scatter award: 2x, 25x or 250x the total bet.
- Spin the symbol wheel to choose the expanding symbol for the round.
- Play 10 free spins at the triggering bet per line.
- Land 3 or more Books again to retrigger an additional 10 spins.
The Expanding Symbol
After each spin’s result is determined, the chosen symbol expands to form new paylines on top of the existing ones, but only where the expansion produces a win. It pays across all active lines, regardless of whether the winning symbols sit on consecutive reels. Expanded symbols count separately from the original result, which is where the round’s real money hides.
Because the expansion needs only enough matching symbols to form a win somewhere, a board with two or three of the chosen symbol scattered across the middle reels can turn into full reels of it, stacked three high on every spin that connects. The wheel can land on any symbol except the Book, so the Wolf is in play as an expander, and five expanded Wolves across the grid is the result the whole round is built around. It’s also worth noting what the wheel rules out: with the Book excluded, the round never expands the one symbol that triggers the retrigger, which keeps the bonus chasing paylines rather than more Books.
The round can retrigger. Three or more Books landing during free spins award an additional 10 spins on top of whatever remains, with no conditions attached.
Buy Feature
For players who would rather not wait for the Books to align, a BUY FEATURE button sits in the base game. Clicking it opens a window where the bet for the free spins round can be adjusted before purchase. The buy price is set according to that bet, and paying it triggers the round immediately, wheel and all, skipping straight to the symbol pick.
The purchased round plays exactly as a triggered one: the same 10 spins, the same retrigger rules and the same expanding symbol behaviour. The only difference is how you got there. Because the bet for the round can be modified inside the buy window, the price scales with the stake you choose rather than being fixed to whatever the base game was set at.
Our Honest Verdict
Overall Rating: 6.4/10
Playing this is mostly sitting in a very pretty forest waiting for the Book to do something, and occasionally it does: it completes a line, then another, and the reels go quiet again. The one thing that lifts it above the shelf of lookalikes is that wheel, handing the bonus its shape before a single free spin plays out.
The expanding symbol is the best thing here, and it earns it: paying on all 10 lines without needing consecutive positions turns a decent board into a serious payday, and the retrigger is a clean 10 spins with no strings. The weakest thing is the price of admission. At 93.96%, the return runs below the studio’s own moonlit follow-up, and ten fixed lines leave the stretches between Books genuinely empty.
For players who like their Book games plain and well painted, this is a comfortable place to spend an evening under the moon. Anyone hunting a kinder return or more moving parts will find the pack elsewhere.
Book Of Wolves FAQs
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What is the RTP of Book Of Wolves?
The RTP is 93.96%, which sits below the typical range for Book-style slots. -
How many paylines does Book Of Wolves have?
The game runs on 10 fixed paylines, with all symbols paying left to right from the leftmost reel. -
What is the grid size of Book Of Wolves?
It’s a 5×3 grid: five reels and three rows. -
How do you trigger free spins in Book Of Wolves?
Land three or more scattered Book symbols anywhere on the reels. They pay 2x, 25x or 250x the total bet for three, four or five respectively, and award 10 free spins on top of any payline wins. -
How does the expanding symbol work in the free spins round?
Before the round begins, a wheel of all symbols except the Book decides which one expands. After each spin, that symbol expands to cover its reel positions, but only when the expansion creates a win, and it pays across all active lines whether or not the symbols are consecutive. -
Can free spins retrigger in Book Of Wolves?
Yes. Three or more scattered Books during the round award an additional 10 free spins. -
Can you buy the bonus on Book Of Wolves?
Yes. The Buy Feature lets you purchase and immediately trigger the free spins round. The buy price is set according to the bet you choose for the round. -
What does the Book symbol do in Book Of Wolves?
It’s both the wild and the scatter. As a wild it counts as any symbol, completing line wins, and as a scatter three or more anywhere on the reels pay an award and trigger the free spins round.
