This sport mechanic, steadily present in video slots, entails symbols locking in place on the reels after a profitable spin or when particular standards are met. Subsequent spins could then add extra matching symbols to the locked set, usually rising the payout or triggering bonus options. A standard instance is a sport the place matching symbols adjoining to 1 one other lock, creating a bigger cluster and awarding a re-spin.
This characteristic enhances participant engagement by introducing a component of anticipation and the potential for escalating wins. It provides a layer of technique past merely spinning the reels, as gamers take into account the opportunity of linked symbols and the ensuing rewards. Originating within the digital period of slot machines, this mechanic has turn into a well-liked addition, contributing to the evolution of sport design inside the on line casino trade.