Bonus Round

Detailed Explanation

A bonus round is a distinct game state triggered within a slot machine that offers different mechanics and typically higher win potential than the regular base game. Triggers vary by game: landing bonus symbols on specific reels, achieving a certain combination, or randomly activating. Once triggered, the player enters a separate screen or mode.

Bonus round types include: free spins (reels spin without cost), pick-em games (player selects items from a grid to reveal prizes), wheel spins (a wheel determines a cash prize or multiplier), progressive jackpot draws, and interactive narrative sequences in highly produced video slots. Some modern slots feature multiple tiers of bonus rounds, each with increasing prize potential.

Bonus rounds contribute disproportionately to a slot's overall RTP — some games route 40–60% of their total return through bonus features. High-variance slots may have long periods between bonuses but offer significant prizes when triggered. Some players use 'feature buy' options (paying a premium, often 50–100x bet) to immediately enter the bonus round, a feature common in markets where it is legally permitted.