AP Glossary
WhatIsBankedBonus?
A bonus feature that saves progress between players. When a previous player leaves a machine with a partially filled bonus meter, the next player inherits that progress — the core mechanic behind most accumulator advantage plays.
Why It Matters
Why this matters for advantage play
Banked bonus mechanics are the engine that creates leftover value on a casino floor. Every time a player walks away from a partially filled meter, they donate expected value to whoever sits down next. Recognizing which machines have banked bonuses tells you where to look for +EV opportunities.
Cross-Reference
Related terms
Accumulator
A slot machine that collects or banks a resource (coins, orbs, counters) over time toward a bonus trigger. Previous players' progress carries over, creating advantage play opportunities when the accumulated value is high enough.
Persistent State
A game feature that carries over between player sessions, such as collected wilds, counter values, or bonus progress. Persistent state mechanics are what make advantage play on slots possible — without them, every spin would be independent and always -EV.
Counter
A visible or hidden tracker on a slot machine that accumulates toward triggering a feature. Counters may display as collected items, filled meters, or numerical values. When a counter is elevated, the machine may be in a +EV state.
Vulture / Vulturing
The practice of finding and playing machines left in +EV states by previous players who didn't realize the value they'd built up. The term comes from the player 'swooping in' to collect value that others left behind.
Live Examples
Machines that use this
Documented Accumulator machines on Run the Slots. Tap any title for the full advantage play guide.
Frequently Asked
Common questions about banked bonus
A regular bonus triggers from a single spin's outcome and resets when the round ends. A banked bonus accumulates across many spins and many players, with progress visibly stored on the cabinet between sessions.
No — most slots have non-banked bonuses that don't carry over. Banked bonuses are specific to a subset of accumulator-style games like Piggy Bankin', Fortune Coin, and certain Link series titles.
In practice, gaming regulations in most U.S. jurisdictions prevent casinos from arbitrarily resetting persistent state. Mechanical errors and tilt events can still wipe progress, so always document the meter before sitting down.
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