Arena of Iron

A Symbol Modifier is a parent concept that encompasses all types of special symbols that go beyond simply having their own value or substituting for other symbols, to directly affect other symbols and change their value or state. These symbols act as 'commanders' that create variables in the bonus round and generate complex synergies between symbols.

A Stacked Symbol refers to a state where multiple symbols of the same kind exist in the form of a long, rope-like strip on a reel. When the reel stops spinning, part or all of this symbol stack appears on the screen, filling several positions, or even the entire reel, with the same symbol. The core goal of this feature is to activate multiple paylines or ways to win simultaneously to create large-scale, concurrent wins.