The feature set is small enough to hold in one sentence. Fifteen fixed lines are paid left to right from the leftmost reel, on adjacent reels; tombstone Wilds substitute while carrying x2 / x3 / x4 / x5 / x10; ghost Wilds substitute while expanding upward and taking a multiplier equal to the rows they cover; 3 Bonus symbols give 10 Spooky Spins and 4 give 10 Phantom Spins; and three paid options exist for people who do not want to wait.
What makes it worth more than a sentence is the interaction. The two Wilds are not two versions of the same thing — they are two different kinds of number, and the rule for combining them changes depending on which one sits on top. The rest of this page is that, slowly.
Win lines: fifteen fixed patterns on a five-row grid
A combination has to begin on the leftmost reel and continue across adjacent reels. Five rows allow straight, diagonal and stepped paths, and the help display draws all fifteen over miniature grids so each route is visible independently of the symbol art. Only the highest combination per symbol pays, and the qualifying lines are summed for the round.
Because the lines are fixed, nothing about the bet changes how many of them are live. The stake sets what each of the fifteen is worth and nothing else.
The symbol panel sits over the cabinet, so the values can be read against the positions they pay on.
The tombstone Wild carries its multiplier printed on it
Up to five Grave Wilds can appear in a spin, each substituting for paying symbols and each printed with one of 5 values: x2, x3, x4, x5, x10. The silhouette never changes, only the number inside it, so the difference between the smallest and the largest is readable at a glance and before the result is calculated.
A single tombstone on a paid line multiplies that line's prize by its printed value. Two or more on the same line are added — x5 and x10 make x15 for that line. A tombstone whose position belongs to several of the fifteen patterns contributes to each of them separately.
The ghost Wild earns its multiplier by stretching
A Ghost Wild lands blank and then expands from its row to the top of its reel. The number of rows it ends up covering is its multiplier, so a bottom-row landing fills five positions and is worth x5 while a landing near the top is worth considerably less. One ghost per reel, with up to five across the spin.
Nothing random decides that value. It is geometry, and it is already finished by the time the expansion animation stops: the height you can see is the number that will be applied to every line the ghost takes part in.
Three full-height expansions. Each covers five rows, and each shows x5 at the foot of the stretched symbol.
When one Wild covers the other, the rule changes
Independent Wild multipliers on one line add. That is the standing rule and it covers almost every spin. The exception is the overlap: if an expanding ghost covers one or more tombstones, those tombstone values are added together first, and the sum is then multiplied by the ghost's own value rather than added to it.
This is the only place in the game where the arithmetic jumps from addition to multiplication, and it is also the only place where both Wilds depend on each other. The ghost's landing row sets how many rows it covers, which sets both its own multiplier and how many tombstones fall inside its reach.
Spooky Spins and Phantom Spins compared
Both award 10 free spins and both keep the base cabinet, the fifteen lines and the Wild rules intact. 3 Bonus symbols start the first; 4 start the second, which the game also labels Super Free Spins.
Spooky Spins leans on the overlap: the game's own description of it puts the ghost-over-tombstone calculation at the centre. Phantom Spins keeps that and adds persistence — every ghost that lands is remembered for the rest of the feature and expands again each spin, so coverage accumulates instead of resetting.
Three matching skull candles. That is the whole of the Spooky Spins trigger.
Buy Bonus and Double Chance: what each one costs
Three paid entries sit in the feature panel. Spooky Spins costs 100x the bet, Phantom Spins 300x, and Double Chance raises the total stake to 1.5x while doubling the chance that a feature arrives by itself. At a displayed 1.00 stake the panel shows 100.00, 300.00 and 1.50.
None of the three changes a rule. The spin count stays at ten, the Wild values stay what they are, the ceiling stays where it is. A paid entry buys the trigger, at a price printed beside the button, and the return figure attached to each route is different from the base figure — which is the honest way of saying that buying a feature is a different bet, not a shortcut through the same one.
The screen the game opens on: the expanding Wild, the two bonus games and the headline maximum, each in its own panel.
What the paytable does not decide
The symbol panel sets the line values — the highest paying symbol reaches 25x for five of a kind — and that is the smaller half of the game. Everything above a modest line win comes from the Wilds, which is why a reader who only studies the paytable will misjudge what this slot does.
It also means the two Wilds deserve the two separate pages this site gives them. Several pages elsewhere describe this game as having one Wild with a number on it. There are two, they are calculated differently, and the difference is where the 20,000x ceiling lives.
Questions about the feature set
Do tombstone multipliers add together?
Yes. Two or more Grave Wild values on the same winning line are added before the line prize is multiplied.
How is a ghost multiplier worked out?
It equals the number of rows the ghost covers after expanding upward, so a bottom-row landing on a five-row reel gives x5.
What does Double Chance change?
It doubles the chance of a feature triggering on its own and raises the displayed total stake to 1.5x the bet. It changes no rule inside the feature.
Does buying a feature change the return figure?
Yes. Our source lists a separate figure for each paid route, and none of them is the base-game figure.
That is the honest way to read a bought feature: it is a different bet on the same ten spins, not a shortcut through the bet you were already making.
How many Wild symbols can land in one spin?
Up to five tombstones, and up to five ghosts with no more than one ghost per reel.
Who made Boo's Booty?
Penguin King built it. Penguin King is itself a studio inside Octoplay, which owns it and distributes its games through its own remote game server.
Both names are therefore correct, which is why some pages about this game credit one and some the other. The studio is the name on the game; the group is what a lobby may be filing it under.
The two Wilds have a page each from here, because the rule that joins them only makes sense once both halves are clear. The tombstone page covers the printed number; the ghost page covers the earned one.
