Multiplier Slots
A multiplier scales a win by a stated factor, and the rules should say what it applies to, how factors combine and where the cap sits.
How multipliers work
A multiplier scales a win by a stated factor, so a 5x multiplier turns a 20 coin win into 100. The factor and its target are both rule matters. A multiplier can apply to a single line win, to a cluster, to the total of one spin or to the whole of a bonus round, and the paytable states which.
Multipliers appear in the base game and in bonuses, and the two placements read differently. In the base game a multiplier usually attaches to a symbol or arrives at random. Inside Free Spins the multiplier often follows a schedule, and the specific case of a factor that grows step by step is covered on the Increasing Multipliers page.
Combination rules decide most of the arithmetic. Where two multiplier symbols land in one win, games either add the factors or multiply them, and the difference is large. The rules should state the combination method, the maximum factor and whether any cap applies to the final figure.
Chain mechanics give multipliers a second life. Games built on Tumble & Cascading Reels often raise a factor with each step of the chain, and the factor then applies to the wins that follow. Whether the progression survives between spins, and whether it resets outside the bonus, are the questions the rules must answer in writing.
A multiplier is the plainest feature in slots to document, because it is a number with a target. The games that describe both belong in a catalogue; the games that print a factor with no target need their rules read twice.