Some machines are programmed with a secondary jackpot that is guaranteed to be awarded before the pool reaches a specific numerical limit.

The jackpot is linked only to a single machine.

Progressive slots represent a distinct category of casino gaming characterized by a jackpot that increases over time. Unlike standard slot machines with fixed top prizes, a progressive machine takes a small percentage of every wager placed and adds it to a central prize pool. These games are often networked across multiple machines, casinos, or jurisdictions, allowing the jackpot to grow to significant amounts before being won.