All NetGame online slots have a unique 4-level Progressive Mystery Jackpot tool feature. The feature is linked to the websites of one or more casino operators, ensuring that operators will enjoy the marketing beneﬁts of players winning on their sites. Progressive Jackpots are built through player contributions: the higher the money deposit made and the higher the stake played, the higher the chance of winning money. The separate jackpot game offers four different progressives – Red, Silver, Gold and Diamond – at all wager levels.