Part I: Games & Gaming · Slot Machines & Electronic Gaming

Wild Symbol

Slot Mechanics

A special slot symbol that substitutes for most other standard symbols to help form winning combinations. Wild symbols cannot typically substitute for scatter symbols, bonus symbols, or other special feature triggers. Wilds significantly increase hit frequency and are among the most common bonus features in modern slots. The behavior of wilds varies by game — they may appear as single symbols, stacked symbols (covering multiple positions on a reel), expanding wilds (expanding to fill an entire reel), or sticky wilds (remaining in place for multiple spins). The frequency of wild symbol appearances is carefully calibrated by the game designer and documented on the PAR sheet.

In practice

Wild symbols are analogous to the joker in a deck of playing cards. Some games feature “walking wilds” that shift position across reels on successive spins.

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