Mystery symbol
What is Mystery symbol?
A mystery symbol is a concealed placeholder that reveals itself as a single ordinary symbol after all reels have stopped. Every mystery symbol on the grid at the same moment transforms simultaneously into the same randomly selected symbol, which can create or strengthen winning combinations in an unpredictable way. The revealed symbol is drawn once and applied to all mystery positions at once.
How it works
Mystery symbols appear as veiled or animated tiles. Once the reels stop, a single random draw determines which symbol all of them will become. Because every mystery on the grid transforms into the same symbol, a large cluster of mysteries can instantly produce a high-count grouping of one symbol type.
Win potential
If the revealed symbol is a high-value one and many mysteries occupied the grid, the outcome can be substantial. If the symbol is low-value, the spin may yield little or nothing. This uncertainty is inherent to the mechanic and contributes to game volatility.
Use in bonus rounds
Mystery symbols often appear more frequently during free-spin rounds or can themselves trigger a bonus feature when enough land in one spin. Some titles offer a premium tier (super mystery or mega mystery) that guarantees a high-value symbol on reveal.