Power of Ten bonus games open on three, four or five scatters

It is a reasonable assumption that a fourth scatter means a longer bonus and a fifth means a longer one still, because that is how most slots that count scatters work. In this title it is wrong in both directions. Four scatters gets a round with no spin count at all, which can end faster than ten spins or run far longer. Five gets a round of the same length as three but with a different promise underneath it.

The practical consequence is that a reader cannot judge a trigger by the number. What matters is which of three sets of rules just started, and the three sets have almost nothing in common beyond the symbol that opens them. The sections below take them in the order the scatters count.

Three FS Scatters landing together open Deck of Fortune, which begins with ten free spins. It is the most conventional of the three and the easiest to read: the base game continues exactly as it was, the ordinary symbols and lines are untouched, and the single change is that Power Wheels are likelier to land than they are outside the round.

It can be extended. Additional scatters landing during the round add spins, with two of them worth two extra and three worth four, and the counter can rise more than once if further qualifying groups appear. Nothing about the Wheel rules changes while that happens: a Wheel still waits for the line wins, still reveals one of its four faces, and still combines with any other Wheel on the board.

What Deck of Fortune is, then, is ten spins of the ordinary game with the dial turned up on the only symbol that matters. That is a smaller promise than the other two rounds make, and it is the one a reader will meet most often.

Four scatters open the round that breaks the pattern. Whopping Wheels is counted in three lives rather than in spins, and every Power Wheel that lands does three things at once: it sticks to the position it landed on, it stays inactive instead of revealing, and it resets the lives to three.

So the round has no fixed length. It lasts exactly as long as Wheels keep arriving, and it ends the moment three consecutive spins fail to produce one. Then everything that has been collected activates together and the values are combined, which is the first and only moment the round pays its feature prize. Ordinary line wins still settle as they occur along the way; the collected Wheels are a separate pot that resolves once.

There is a second ending. A board completely filled with Wheels finishes the round immediately, with no reason to spend the remaining lives, and pays the same combined way. That is the reason the board itself is the progress meter in this round: the number of occupied cells is simultaneously the score, the remaining room and the distance to the end.

It is also the round in which the terminal MAX WIN sits least comfortably, and a reader should expect it: a single Wheel revealing it at the final activation ends matters at the ceiling regardless of how patiently the rest of the board was assembled.

Five scatters open a round the game never mentions. Our source calls On the House the hidden bonus, and that is accurate in the ordinary sense: nothing in the interface signals that a fifth scatter leads anywhere different from a fourth, so a reader meets it by accident or not at all.

Mechanically it borrows Deck of Fortune's frame — ten free spins, the same extension rule of two spins for two extra scatters and four for three — and replaces its central promise. Where Deck of Fortune raises the chance of a Wheel, On the House guarantees at least one on every reel, on every spin. On a board five columns wide, that is a floor of five Wheels per spin for ten spins.

The difference between a raised chance and a guarantee is the whole of it. In Deck of Fortune a spin can pass with nothing; in On the House it cannot. Every spin of the round therefore triggers the addition rule by construction, and the round is the only place in the game where a full row of Wheels, with its stronger prize set, stops being a remote event.