A bonus round is a separate feature within a slot game, triggered by landing specific symbols, that breaks from normal spinning to offer free spins, pick-a-prize screens, or other mini-games with a shot at bigger payouts.
A player spinning a $1 bet lands three scatter symbols anywhere on the reels, which awards 10 free spins with a 2x multiplier applied to every win during the round. A base spin that would have paid $5 now pays $10 for the rest of the feature, without costing the player anything further.
Instead of spinning and hoping for scatters, a player uses a bonus buy option priced at 100x their $1 bet, paying $100 to enter the free spins round immediately. It skips the base game grind entirely but means the full $100 is already at risk before a single bonus spin has landed.
Free Spins are a specialized bonus feature that allows players to spin the reels of a slot machine without using their own deposited funds, while still retaining the ability to win real money. Free Spins are more than just "extra turns"; they are high-potential phases where a game’s RTP is often most concentrated, offering players the chance to achieve "Max Win" payouts at zero cost, especially in titles that allow for "Retriggers" which is the ability to win even more spins while the bonus round is already in progress.
A wild symbol is a slot reel icon that substitutes for other regular symbols to complete a winning combination, functioning much like a joker in a card game.
A scatter symbol is a slot icon that pays out or triggers a bonus feature like free spins simply by landing anywhere on the reels, without needing to sit on an active payline.