An independent reference for adultsFirst edition · 30 October 2026
Slot Game BookThe details behind the reels.A note on our sources
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Working definition · 30 October 2026

Expanding symbol

A symbol that can occupy additional positions when its expansion condition is met.

The useful distinction

Expansion may be conditional and may occur after ordinary awards are evaluated. It is distinct from enlarging the dimensions of the grid.

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Cascading symbols and expanding grids explained →

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