Nudge Wild
A wild that, when appearing partially on a reel, nudges vertically to cover the entire reel while stacking multipliers.
Slot Features Explained and Standardized
Explore 228 mechanics identified through examination of individual games. We classify features by how they work, with explanations and interactive demos that make their similarities and differences easier to understand.
All FeaturesBonus GameFree SpinsJackpotScatterSpecial BettingSpecial ReelsSpecial SymbolsUnique PaysUnique SpinsWild
Path Creator
A feature that fills empty spaces on the reels to create a 'path' for symbols to move or connect.
Pay Anywhere
A payout system where a win is awarded for landing a certain number of identical symbols anywhere on the screen, regardless of position.
Pays Both Ways
A payout system that recognizes winning combinations not only from left-to-right, but also from right-to-left.
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.
Pick and Win
A bonus game where you select from several options to win hidden prizes.
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.
Plinko Bonus
A physics-based bonus game where dropped balls bounce through pins to land in high-multiplier prize slots.
Position-Based Collection
A unique cash collection mechanic where the scope of instant prize symbol collection is determined by the specific reel position an activator coin symbol lands on.
Position-Based Expansion
When a special wild symbol lands, it causes a designated activated position on the reels to physically expand into a 2x2 block, significantly enhancing its collection capabilities.
Positional Multiplier
A feature where multipliers are created on winning 'spots', which then grow as more wins occur in the same position.
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.
Prize Board
A feature where you win prizes displayed on a separate 'prize board' by landing a specific trigger combination on the reels.
Probability Progression Meter
A meter that increases the statistical probability of triggering a bonus feature based on symbol elimination or winning sequences.
Progressive Jackpot
A growth-type jackpot where the prize money continuously accumulates in real-time from players' bets.