3 Coin Volcanoes starts with a four-by-three grid and two active lines. Four symbols on either active line trigger its re-spin bonus. The three volcano boosters serve different roles: Life replenishes the counter, Multi adds combinable multipliers, and Grow opens two more rows. Filling the expanded board is a different condition from filling the starting grid. This larger, booster-driven release should be kept separate from the original three-by-three Coin Volcano.
To compare related slots formats, read the rules of 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.
