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A feature where multiple identical wild symbols appear connected in a long strip, filling several spots on a reel at once.

Stack Wild refers to a state where multiple wild symbols are layered on top of each other like a long ribbon on a reel.

When the reel stops, part or all of this stack of wilds can appear on the screen, filling multiple positions on the reel with wilds at once.

The core goal of this feature is to create a powerful 'Wild Reel' by turning an entire reel wild, thereby completing numerous winning combinations simultaneously.

How It Works

This demo is a simulation for illustrative purposes and may differ from actual slot game behavior.

Internal Reel Structure

A typical reel is like a long 'tape' with various symbols mixed together. However, a reel with the 'Stack Wild' feature has specific sections of this tape that consist of a long, continuous strip of only wild symbols.

Appearance of the Stack Wild

When the reel stops after a spin, if you are lucky, this long strip of wild symbols will land across the screen. As a result, the following can occur:

Partial Stack

Only part of the reel (e.g., 2-3 out of 4 positions) is filled with wild symbols.

Full Stack / Wild Reel

The entire reel is filled with wild symbols.

Difference from Expanding Wilds

Both features can cover an entire reel with wilds, but their mechanics differ.

Stack Wild

The wilds appear already in a Stack state. The result is determined by the 'luck' of how the reel stops.

Expanding Wild

A single wild symbol appears and then expands with a special animation to cover the entire reel.

Explosive Multi-Line Wins

Because an entire reel becomes a 'joker', it affects every payline that passes through it.

If reels 2 and 3 both become wild reels, an incredible number of winning combinations can be completed at once, no matter what symbol appears on reel 1.