Part I: Games & Gaming · Slot Machines & Electronic Gaming

Free Spins

Slot Mechanics

A bonus feature that awards the player a predetermined number of spins without deducting credits from their balance. Free spins are typically triggered by landing a required number of scatter symbols and often include enhanced features such as additional wilds, multipliers, or modified reel sets that increase win potential. The expected value of free spin rounds is factored into the game’s overall RTP calculation. From a player psychology perspective, free spins are among the most sought-after features, creating anticipation and encouraging continued play through “bonus chasing” behavior.

In practice

Free spins can often be “retriggered” by landing additional scatters during the bonus, awarding extra spins. Some APAC markets use the term “free games” in regulatory documentation.

One entry from the Casino Industry Glossary — 1,157 terms written for surveillance, compliance and operations professionals rather than for players. Definitions describe industry usage; where a term carries a regulatory meaning, verify against the instrument that governs your jurisdiction.