Area Symbol Transformation
A feature where a random symbol on the grid is selected as a "Marked Target," and all symbols within a 3x3 or 5x5 area surrounding it transform to match that target symbol.
Symbol Upgrade
Evolving into Higher Value
Symbol Upgrade is a powerful feature that progressively converts low-value symbols on the reels into higher-value ones as the game proceeds.
The core of this feature is not just a one-time symbol change, but a 'growth' structure where lower-tier symbols are permanently removed from the reels and replaced by higher-tier ones. This drastically increases the average expected payout of the reels towards the end of the round.
More Features in This Family
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Bonus Overlay Symbol
A feature where a special effect is overlaid on a regular symbol, which then awards a special bonus (e.g., free spins).
Cash Symbol Cloning
A feature where existing cash symbols clone their values onto adjacent empty positions, multiplying the total collectable prizes.
Cluster Merge & Level Up
A dynamic mechanic where winning clusters merge and transform into higher-level symbols, driving continuous progression.
Collector Upgrade
A feature that enhances the basic abilities of a 'Collector' symbol, changing its collection range, targets, or value.
Conditional Instant Prize
A 'lock and key' style instant prize symbol that only pays out when a specific 'collect' symbol appears with it.
Consolation Symbol Drop
A rescue feature that randomly adds necessary winning symbols to the reels in a 'near-miss' situation.
Dealer Feature
A special symbol that, when part of a winning cluster, applies its own multiplier to other multipliers within a specific area (e.g., a V-shaped area).
Destructive Symbols
Special symbols that appear after a winning cluster bursts, destroying other symbols on the grid in specific patterns (e.g., a line, adjacent symbols, or a random type) to facilitate new cascades, without acting as wilds or multipliers.
Explosive Multiplier Symbol
A non-wild special symbol that explodes to destroy nearby symbols while adding a multiplier value to the total win.
Feature Upgrade
A feature that upgrades another 'special feature symbol' to its 'Persistent' version.
Giant Symbol Break
A special feature where giant symbols land on the grid and shatter into multiple individual matching symbols.
Growing Symbol
A feature where a specific symbol's size progressively increases each time a condition (e.g., collecting scatters) is met during a bonus round.
In-Bonus Symbol Addition
In-Bonus Symbol Addition is a feature active during bonus rounds where landing specific symbols can proactively generate and add more prize symbols to the reels.
Instant Prize Symbol
A symbol that pays an instant prize (a set cash value or bet multiplier) just by appearing, without needing a line.
Multi-Function Symbol
A hybrid symbol that simultaneously performs the roles of two or more core special features, like Wild and Scatter.
Multiple Expanding Symbols
A feature where more than one 'Special Expanding Symbol' can be active simultaneously, typically through retriggers during free spins.
Multiplier Duplication
A feature where multiplier values duplicate onto empty cells and add up when overlapping, spreading across the grid.
Multiplier Enhancer Symbol
A special symbol that, when revealed, multiplies the combined value of all other existing multiplier symbols on the grid by its own value (e.g., 2x to 10x), amplifying the total win multiplier.
Multiplier Symbol
A special symbol that provides a random multiplier value just by appearing on the reels.
Mystery Symbol
A surprise feature where symbols appear hidden and then all transform into the same matching symbol after the spin.
Persistent Nudging Collector
A special collector symbol that moves down every spin but jumps back up to its original position if it successfully collects prizes.
Persistent Symbol
A top-tier symbol in 'Hold and Respin' bonuses that repeatedly performs its special ability (collect, pay, etc.) on every single spin.
Player-Initiated Symbol Swap
A toggleable feature allowing players to manually swap highlighted symbols on the grid after cascades or explosions, for an extra bet, to form new winning combinations.
Post-Win Symbol Transformation
A feature where a specific symbol that was part of a win transforms into a different random symbol immediately after the payout.
Roaming Special Symbol
A non-wild special symbol that remains on the grid and jumps to a new random position with each spin.
Shapeshifter Symbol
A feature where a symbol randomly transforms into a different type of special feature symbol (e.g., Collector, Payer) on every spin.
Smart Symbols Rotation
This AI-driven feature automatically rotates outer symbols on the reels after a spin, stopping them in the optimal position to create the best possible payout.
Special Expanding Symbol
A feature where a specific symbol, designated during free spins, expands to cover the entire reel and creates a win even when scattered.
Stacked Symbol
A feature where multiple identical symbols appear connected in a long strip, filling several spots on a reel at once.
Sticky Collector
Sticky Collector is a special symbol that, upon landing, remains fixed on the reels for a predetermined number of spins or until a condition is met, continuously gathering values from other prize symbols.
Symbol Collector
A powerful symbol that appears during a bonus and collects the values of all other cash symbols on the screen.
Symbol Converter
A symbol that transforms a specific regular symbol into another type of 'special symbol', triggering a feature chain reaction.
Symbol Group Merge & Multiplier
Adjacent cash symbols merge into a single symbol, summing their values and applying a random multiplier while freeing up grid space.
Symbol Modifier
A general term for any special symbol that has the ability to actively change or enhance the 'value' or 'state' of other symbols.
Symbol Split
A feature where a single symbol in one position is treated as two (double) or more symbols, creating longer winning combinations.
Transforming Symbol
A special symbol that continuously transforms into a random paying symbol at the end of every spin.
Twin Collector
A special collector symbol that transforms into two independent collector symbols within the same cell, doubling its ability to collect rewards from bonus symbols.
Value Boost
A feature during Hold & Win where a random 2x2 area of instant prize symbols has its cash values boosted by an environmental effect.
Block Symbols
Block Symbols are a special type of symbol that appear in 2x2 or 3x3 formations, occupying multiple grid positions and counting as multiple individual symbols for winning combinations.
Connect & Collect
Connect & Collect is a mechanic where special symbols form a contiguous path from the leftmost reel to a specific target position, activating prizes or bonus features.
Upgradeable Multiplier Symbol
Upgradeable Multiplier Symbol is a special symbol whose value dynamically increases with each subsequent winning cascade within the same spin, leading to exponentially higher payouts.
Link Frames Random Transformation
A feature where special 'Link frames' appear, transforming symbols within them into random symbols, with these frames persisting throughout the free spins bonus.
Feature Symbol Transformation
This feature allows a special symbol appearing on the grid to transform itself into one of several predefined feature symbols, such as an Instant Prize, Multiplier, or Collector symbol, activating their respective bonus effects.
Crusher Symbols
Crusher Symbols are special symbols that appear above the reels, drop down their respective columns, and remove lower-value symbols, awarding cash prizes or boosting a global multiplier.
All Slots with This Feature
PREVIEWSanta vs Krampus
- Reel Config
- 6x4
- RTP
- 89.8%
- Paylines
- 4,096
PREVIEWCursed Crown
- Reel Config
- 5x3
- RTP
- 96.51%
- Paylines
- 20
PREVIEWFortune Bass Hot Pot Collector 15,000
- Reel Config
- 5x3
- RTP
- —
- Paylines
- 243
PREVIEWObelisk Treasures
- Reel Config
- 5x3
- RTP
- —
- Paylines
- 20
PREVIEWWonders Wealth
- Reel Config
- 5x3
- RTP
- 96.39%
- Paylines
- 20
300SPINS™CASUALWorld Eaters 2
- Reel Config
- Changeable
- RTP
- 96%
- Paylines
- Etc.
PREVIEWFurensics ClusterBreaker
- Reel Config
- 5x4
- RTP
- 95.9%
- Paylines
- Anywhere
PREVIEW100 Glossy Hot Coin Boost
- Reel Config
- 5x3
- RTP
- —
- Paylines
- 100
PREVIEWGolden Pot
- Reel Config
- Irregular
- RTP
- —
- Paylines
- Cluster
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