Coin Volcano uses three-by-three reels, with three symbols on the middle row starting its re-spin bonus. A sticky coin can remain in place until that bonus triggers. Collect symbols gather coin values, while a randomly activated Volcano Multiplier feature enhances positions. The Ultra Bonus guarantees that multiplier feature at its start. Its compact starting grid distinguishes it from Coin Volcano 2 and the separate 3 Coin Volcanoes title.
To compare related slots formats, read the rules of Grab more Gold!.
The library also explains the difference between lines, ways and clusters to help put these mechanics in context.
Source: published game information.
