Book Of Piggy Bank Slot Review
Deep maroon drapes hang over everything, held back by a rope-twisted gold frame with riveted corners and a marquee plate across the top, so the reels sit on a small theatre stage with the curtain still drawn. Book Of Piggy Bank is a plain Book game wearing a very ornate costume, and it spends its one original idea where it counts: the expanding symbol is re-cast on every single free spin, so no round is decided before it’s played. Everything outside that round is deliberately spare.
Spinomenal build it on a 6×3 grid with 10 paylines and an RTP of 96.14%, a healthier return than the Easter and Black Friday editions that flank it on the studio’s shelf.
The Curtain and the Cash: Base Game
All symbols pay left to right from the leftmost reel, and only the highest win on each line is paid. Wins are multiplied by the bet per line, of which there are ten. The total bet is built as the per-line stake across all ten lines, and the + and – buttons step that per-line stake up and down.
Spinning is a button press or a tap of the space bar. Form a combination of symbols on a payline and it wins; nothing else in the base game intervenes between spins. There’s no second feature, no collection meter, no random modifier waiting in the wings.
The wild is the piggy bank book, and it pulls double duty as the scatter. It counts as any symbol on the lines, so it completes line combinations like any wild. Scattered wilds also pay on top of line wins at the following multiples of the total bet:
- 3 scattered wilds – 2x the total bet
- 4 scattered wilds – 25x the total bet
- 5 scattered wilds – 250x the total bet
- 6 scattered wilds – 500x the total bet
Land three or more and the free spins begin. Until then, the base game is the paytable and nothing else.
The Paytable
The paying symbols are pure money-chest material, and the gaps between tiers are wide. The values below are multiples of the total bet:
- Green Cash Stack – 2: 100x, 3: 1,000x, 4: 10,000x, 5: 50,000x, 6: 100,000x
- Red Pouch/Wallet – 2: 50x, 3: 400x, 4: 4,000x, 5: 20,000x, 6: 40,000x
- Blue Gem / Safe – 2: 50x, 3: 300x, 4: 1,000x, 5: 7,500x, 6: 15,000x
- A / K – 3: 50x, 4: 400x, 5: 1,500x, 6: 3,000x
- Q / J / 10 – 3: 50x, 4: 250x, 5: 1,000x, 6: 2,000x
Note what that ladder does. The Green Cash Stack pays from just two of a kind, which sounds generous until you see where the real money sits.
The fat end of the table is stacked at five and six of a kind, and a six-reel grid is long. The royals carry most of the traffic on the way there. A six-of-a-kind Cash Stack at 100,000x the total bet is the top of the paytable ladder.
Free Spins and the Expanding Symbol
Three or more scattered wilds award 10 free spins, with the bet per line carried over from the triggering game. There’s no choosing, no tiers, no ante bet. The round can retrigger, and a retrigger adds another 10 spins.
A New Symbol Every Spin
This is the game’s own idea, and it’s a good one. On each individual free spin, a randomly assigned symbol – anything except the scatter wild – acts as the expanding symbol for that spin only. Most Book games pick one expanding symbol for the whole round; here, ten spins hold ten different draws.
After the spin’s result is determined, the chosen symbol goes to work:
- It expands to cover its reels and forms new paylines in addition to the existing ones
- It grows only where the expansion produces a win
- It pays its full line values across all active lines, whether or not the winning symbols sit on consecutive reels
- Expanded wins count separately from the original result
The consequence is that no spin is decided before it’s played. A run of royal expansions can feel like filler, then the last spin assigns the Green Cash Stack and the screen fills.
That variance between spins is the whole reason to sit through the round. It also changes what a retrigger means: ten more draws rather than ten more copies of a round you’ve already priced. And because the expanding symbol pays on all active lines regardless of consecutiveness, a full screen of the drawn symbol is the round’s real prize – the paytable’s top tiers become reachable in a way the base game rarely allows.
The Buy Button
A BUY button sits in the interface, so the free spins can be purchased outright rather than waited for. No rules or help text documents the purchase price or what the bought round contains, so there’s nothing more that can be said about it with confidence.
For a game whose base game offers nothing beyond the paytable, that shortcut matters more than it would on a busier slot. The scatter hunt is the only road to the feature, and the BUY button is the toll road beside it. In an ordinary Book game the base game at least offers collecting or multiplier trinkets to pass the time; here the buy is the only escape from a reels-only diet.
Our Honest Verdict
Overall Rating: 7.2/10
This is a lot of waiting between shows. The base game is the drapes before the performance: royals trickle in, the wild does its scatter duty, and the scattered wilds at least pay their own way while you watch for three of them. The one reason to take a seat is the free spins, because this game refuses to decide a round before it’s played.
That per-spin re-roll is the strength, and it’s a real one. A flat stretch of J expansions can turn on the last spin when the Cash Stack is drawn, and a retrigger means ten more unknowns rather than ten more of the same. The weakness is the paytable’s shape: almost all the money sits at five and six of a kind, on a grid and line count that rarely hand those out, so most of that ladder is scenery.
It’s one for Book regulars who want the formula to move between spins, and for anyone after the top of that ladder, the lobby’s a long place to wait. For the rest, the curtain keeps lifting on something new.
Book Of Piggy Bank FAQs
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What is the RTP of Book Of Piggy Bank?
Book Of Piggy Bank runs at an RTP of 96.14%. -
How many paylines does Book Of Piggy Bank have?
The game has 10 paylines, with line diagrams 1 through 10 shown in the paytable. The total bet is built as the bet per line multiplied by the 10 lines. -
What is the grid size of Book Of Piggy Bank?
Book Of Piggy Bank plays on a 6×3 grid – six reels and three rows. -
How do you trigger free spins in Book Of Piggy Bank?
Landing 3 or more scattered wild symbols anywhere on the reels awards 10 free spins. The scatter wilds also pay their own prize on top of line wins: 2x for three, 25x for four, 250x for five and 500x for six. -
How does the expanding symbol work in Book Of Piggy Bank?
Each free spin gets its own expanding symbol, chosen at random from every symbol except the scatter wild, and it only lasts for that one spin. It grows only where the growth produces a win, and it pays on all active lines regardless of whether the winning symbols sit side by side. -
Can free spins retrigger in Book Of Piggy Bank?
Yes. Free spins may retrigger and award an additional 10 free spins. -
Can you buy the bonus on Book Of Piggy Bank?
Yes. The game has a BUY button that takes you straight to the free spins purchase. What the round contains is unchanged: 10 spins with the expanding symbol re-rolled on every spin, and the retrigger works the same way. -
Who makes Book Of Piggy Bank?
Book Of Piggy Bank is made by Spinomenal.
