Setting Off Jackpot Occasions. Knowing how the King 777 Slots jackpots are triggered is crucial to increasing your chances of winning. Jackpot opportunities are frequentlycasino jackpot 007 slots casino 007 apk unlocked by particular symbol combinations or bonus features. To find these triggers, players should closely examine the paytable & game rules. Raising Your Prospects. Also, since many progressive jackpots have higher qualifying stake requirements, playing games with higher betting limits may improve your chances of winning bigger prizes.