The Slotfather: Book of Wins is Betsoft’s 2024 Hold & Win reboot of its long-running mob franchise. It keeps the gangster cast — Frankie Knuckles, Fat Tony and the boss himself — but rebuilds the game around two modern bonus engines, played across five reels and 10 paylines.
We played The Slotfather: Book of Wins in demo mode to see how its Hold & Win and Book-of-Wins free spins differ, how its very-high-volatility maths behaves, and who it suits. This review covers the mechanics, the numbers and the free demo.
How The Slotfather: Book of Wins plays
The base game is a 5×3 grid with 10 fixed paylines, set against a noir gangster backdrop of classic cars and sharp suits. Stakes run from $0.10 to $20 a spin, so it stays open to both small-stakes and bigger play.
Where the 2012 original built its features around individual characters, this version is one of Betsoft’s gangster slots rebuilt around two separate bonus rounds — a Hold & Win and a free spins mode — that you reach by luck or by choice.
The high-paying symbols are the gang members, while the two trigger symbols are a Coin, for the Hold & Win, and a Book, for the free spins. Learning to watch for both is most of what the base game asks of you.
The Hold & Win feature
Land six or more Coin bonus symbols and the Hold & Win begins. The triggering coins lock in place and you are awarded three respins, during which only coins can land on the grid.
Every time a fresh coin lands, the respin counter resets to three, and the round continues until you run out of respins or fill every position. Each coin carries a cash value of up to around 400 times your bet.
Filling the whole screen is where the feature’s biggest wins live. It is a familiar coin-collect format, executed cleanly, and it is the more visual of the game’s two bonus routes.
Free spins and the Book of Wins
Three or more Book scatter symbols trigger the free spins instead. As the round begins, the Book of Wins selects one standard symbol at random to act as the special expanding symbol for the whole feature.
Whenever that chosen symbol lands during the free spins, it expands to cover its entire reel, so matching combinations pay wherever they appear. The Scatter also doubles as a Wild here, and more scatters can retrigger the round.
This is the book-style half of the game, and it rewards a high-value symbol being chosen. A low pick makes for a flat round; a premium symbol expanding across the reels is where the free spins earn their keep.
The Buy Feature
If you would rather not wait, the Buy Feature lets you pay to jump straight in — and, crucially, you choose which bonus you want: the free spins, or a guaranteed Hold & Win.
That choice is the unusual part. Most buy features open a single fixed round; here you decide whether you are chasing the coin-collect or the expanding-symbol payday before you pay.
We treat any buy as a convenience rather than a strategy, since paying up front concentrates a very-high-volatility game’s swings into one purchase rather than spreading them across a session.
RTP, hit rate and volatility
Betsoft sets the default return-to-player at 96.60%, which is above average, though the game ships in lower 93.79% and 91.85% builds too. The figure is worth checking at your casino, as with other very-high-volatility slots.
Volatility is rated very high, and the hit rate reflects it: Betsoft lists 24.68% in the base game, rising to roughly 49.80% inside the free spins. Most base spins return nothing at all.
This is a big-or-bust game. Long quiet runs are normal, and the appeal lies in the size of what the two bonuses can pay rather than any steady drip of small wins.
Playing The Slotfather: Book of Wins in demo mode
The Slotfather: Book of Wins runs in HTML5 on desktop and mobile, and a free demo on practice credits lets you try it with no download or sign-up.
We would use a demo run to feel the gap between the two bonuses — how often the coins gather for a Hold & Win, and which symbols the Book tends to expand — before committing real money to such a swingy game.
It is also the safest way to test the Buy Feature, since paying in repeatedly is an expensive habit on a very-high-volatility slot.
The Slotfather: Book of Wins FAQs
How do you trigger the features in The Slotfather: Book of Wins?
What is the RTP and volatility of The Slotfather: Book of Wins?
Is this the same as the original The Slotfather?
Our verdict on The Slotfather: Book of Wins
The Slotfather: Book of Wins is a confident modern reboot. Giving the franchise two distinct bonus engines, plus the choice of which one to buy, gives it more variety than most single-feature slots manage.
Its honest drawback is the very-high volatility: the 24.68% base hit rate means long dry spells, and this is firmly a game for players who enjoy the chase rather than steady returns.
We would point it at high-variance fans who like the mob theme. If you prefer something gentler and more character-led, the 2012 original The Slotfather is a calmer, medium-volatility take on the same world, and The Slotfather Part II sits between them as a 243-ways sequel.
