Usually substitutes for all symbols except for Bonus and Scatter, and increases your chance to win big
There are a few types of special Wild symbols:
Expanding – Wilds that expand through the reels
Stacked – Wilds that are stacked on top of each other
Random – Symbols that can randomly change to wilds based on game features
Sticky – Wild symbols that stick while the reels keep spinning
Double – Wilds that are considered as two wilds