End-Condition Free Spin
Free Spins
A type of free spins with no set number of spins, which instead ends when all of a specific 'end symbol' are collected.
Unlimited Retrigger
The free spins don't end!
An Unlimited Retrigger means that the 'retrigger' feature—which allows winning additional free spins by landing scatter symbols again during a free spins bonus—has no limit on the number of times it can occur.
In theory, this means that if luck is on your side, the free spins can continue indefinitely, making it one of the most powerful and attractive potentials a slot can have.
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Gateway Free Spins
Free Spins
A 'gateway' style of free spins where you must complete a specific mission to advance to the next, more powerful bonus stage.
Multi-Mode Free Spins
Free Spins
A structure where a single game contains two or more distinct free spin modes, each with its own trigger and rules.
Retrigger
Free Spins
A feature that allows you to win additional free spins while the free spins round is already in progress.
Selectable Free Spins
Free Spins
A feature that allows the player to choose the nature of their free spins (e.g., number of spins, multiplier) upon entering the bonus.
Showdown Spin
Free Spins
A unique two-stage free spin bonus where assets gathered in a 'collection' phase are unleashed during a final 'showdown' phase.
Special Reel Set
Free Spins
A feature where the bonus round is played on a separate set of reels with a richer symbol configuration than the base game.
Sticky Win Combos
Free Spins
A feature where, during free spins, the symbols that contributed to a win are held in place, providing a guaranteed win on every subsequent spin.
Symbol Release
Free Spins
A feature where specific symbols are collected during a set number of spins, then released all at once on the final spin to create a big win.
Persistent Free Spin Grid
Free Spins
In the bonus game, the destruction progress of the game grid (cleared blocks or empty spaces) is preserved across all free spins, with the grid not regenerating its original state between spins.
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