This specific type of casino entertainment centers around a linked progressive jackpot system, often featuring visually distinct symbols and bonus rounds. A prime example includes machines where accumulating heart symbols can trigger special locking and linking features, leading to potentially substantial payouts. These features are integral to the game’s appeal.
The attraction lies in its interactive elements and the potential for significant rewards through the linked jackpot. It gained popularity by offering an engaging experience beyond standard reel-spinning, introducing strategic decision-making during bonus events. Historically, its emergence reflects a trend towards more complex and immersive slot machine designs.