Lucky Penny uses a six-by-five grid where eight or more matching symbols pay anywhere. Winning symbols cascade away to create another opportunity within the same spin. Penny coin multipliers combine and apply after the cascade sequence finishes. During free spins, the multiplier total persists across spins. This scatter-pays structure differs from a conventional Irish fruit slot whose wins must follow fixed lines.

To compare related slots formats, read the rules of 3 Coin Volcanoes and Super China Pots.

The library also explains the difference between lines, ways and clusters to help put these mechanics in context.

Source: published game information.