A progressive jackpot is a prize pool that changes over time instead of staying fixed. Part of the game structure contributes to a growing jackpot until a qualifying event triggers the prize.
Fixed versus progressive prizes
A fixed jackpot has a predetermined value. A progressive jackpot can increase as eligible play takes place. The displayed amount may therefore change continuously.
Local jackpots
A local progressive jackpot is linked to a limited group of games or machines within one operator or environment. The pool grows from activity inside that network.
Networked jackpots
A networked jackpot can connect the same game across multiple operators or platforms. Because more qualifying play contributes to the pool, the prize can grow faster than a purely local jackpot.
How jackpots are triggered
The trigger depends on the game. Some jackpots are linked to a random event, while others require a particular symbol combination, bonus round or eligible stake. The rules page should explain the mechanism.
Check stake requirements
Some games require a minimum or specific stake to qualify for the top jackpot. Others allow jackpot eligibility at all stake levels. Never assume the largest prize is available from every bet size.
Jackpot size does not reveal the odds
A large displayed prize can be visually compelling, but the amount does not tell you how likely the jackpot is to trigger. Probability depends on the game's mathematics and trigger rules.
Multiple jackpot tiers
Many games use several levels, often with smaller prizes that trigger more frequently and a top-tier prize designed to be rarer. Each level can have different conditions.
What happens after a win
A progressive jackpot usually resets to a predefined seed amount after it is won. The pool then starts growing again as eligible play continues.
Verify the rules inside the game
Jackpot mechanics can vary significantly between titles, even when the layout looks similar. The in-game help section is the best place to confirm eligibility, trigger method and stake conditions.
Conclusion
Progressive jackpots are growing prize pools built into a game's mathematics. The important details are how the pool is funded, which stakes qualify, how the prize is triggered and whether the jackpot is local or shared across a network.