Special Wilds
Consolation Wilds
It ain't over till it's over
Consolation Wilds is a unique 'rescue' feature that triggers not on a winning spin, but rather when a specific condition is met on a spin that has 'failed' to form a winning combination. The core of this feature is its nature as a 'consolation' prize that transforms a player's frustrating 'failure' experience into a 'second chance'.
Special Symbols
Special Expanding Symbol
A popular feature that expands in a unique way
The Special Expanding Symbol is one of the most iconic and popular mechanisms in online slot history, a core free spins feature primarily found in 'Book of...' series games. The essence of this feature is that one regular symbol, randomly selected at the start of the free spins, gains a special power. This symbol, as long as it appears on the reels in the required number to form a win, will expand to cover its entire reel and create massive wins regardless of its position.
Special Free Spins
Showdown Spin
A two-stage transforming free spin
Showdown Spins is a very special method where the free spins bonus round proceeds in two distinct phases: 'Phase 1: Collection' and 'Phase 2: Showdown'. The core of this feature is to first collect as many powerful 'assets' (wilds, multipliers, etc.) as possible for the bonus in a manner similar to 'Hold and Respin', and then to unleash all of these collected assets during the final few decisive 'Showdown Spins' to create massive high payouts.
Special Pays
Consolation Multiplier
One step back for two steps forward
A Consolation Multiplier is a unique feature that flips the rules of a typical multiplier system, increasing a global multiplier by x1 each time a non-winning 'dead' spin occurs. The core of this feature is its nature as a 'consolation' prize that transforms a player's 'failure' experience into an 'investment for a future bigger success'.
Special Symbols
Symbol Modifier
A symbol's transformation is innocent
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.
Special Spins
Hold and Respin
Feel the explosive power of sticky symbols
Hold and Respin, or 'Hold & Win', is one of the most popular core bonus game mechanics in modern slots. The essence of this feature, unlike traditional free spins, is to 'Hold' bonus symbols on the reels and 'Respin' the remaining empty spaces to fill up the screen. This system was popularized worldwide through 'Money Train 2's' 'Money Cart Bonus' and is the foundation for numerous developer-specific brand features like Wazdan's 'Hold the Jackpot™' and Playtech's 'Fire Blaze™'.
Special Reels
Mega Reel
Unleashing the reel's potential
A Mega Reel is a powerful and visual feature, primarily used in free spins bonus rounds, where multiple individual reels (usually the central reels 2, 3, and 4) physically merge to operate as a single reel that lands one giant symbol. The core of this feature is to dramatically increase the probability of completing high-payout winning combinations by having a single giant symbol dominate the key area of the game board.
Special Reels
Symbol Removal
We don't need useless symbols
Symbol Removal is a powerful feature where, upon meeting a specific condition, regular symbols with the lowest value are temporarily removed from the reels. The core of this feature is to reshape the composition of the reels to be more favorable to the player by eliminating unnecessary 'obstructing' symbols. Since the game proceeds with only the remaining high-value symbols, the quality and probability of winning combinations are dramatically increased.