Almost nobody publishes jackpot odds. What regulators require, what published max win odds across 62 Nolimit City games show, and what they do not.
Almost nobody publishes them. That is the first and most useful fact about jackpot odds, and it is worth saying before any numbers.
A progressive jackpot's trigger chance is commercially sensitive, it is not required to be published in most markets, and the figure you see advertised is the prize, never the price. What follows is what can be said with evidence, and what cannot.
The UK Gambling Commission's RTS 9 requires an explanation of the jackpot rules before you bet, and its guidance lists what that explanation should cover: funding, seed, ceiling, return to player, and how prizes are determined and awarded.
Trigger probability is not on that list.
So a British licensed operator can comply fully with RTS 9 without ever telling you your chance of hitting the jackpot. Return to player is covered, and return to player is not the same thing as the odds, because one very large prize at very long odds and many small prizes at short ones can produce the same percentage.
Slot suppliers rarely publish jackpot trigger odds. Some do publish the odds on a game's maximum win, which is a different thing: a fixed ceiling inside one game's own mathematics, not a pooled prize fed by other players. It is the closest published equivalent, and it is useful because it shows the scale these numbers actually run at.
We hold the figures for the full Nolimit City range. Of 64 released games, 62 publish odds on the maximum win. Across those 62:
The shortest is Brick Snake 2000, at about 1 in 98,000, for a ceiling of 8,110x.
The longest is Tombstone Begins, at about 1 in 217 million, for a ceiling of 20,000x.
The median is about 1 in 15.3 million.
22 of the 62 are shorter than 1 in 10 million. Five are longer than 1 in 100 million.
A median of 1 in 15.3 million is the number to sit with. At 200 spins an hour, which is fast, that is roughly 76,500 hours of continuous play for one expected hit. The prize is real and the published odds are honest. The scale is simply much larger than most people picture.
The intuition is that a bigger top prize must be harder to reach. The corpus says otherwise.
Tombstone Begins pays 20,000x at 1 in 217 million. San Quentin 2: Death Row pays 200,000x at 1 in 1.5 million. Ten times the prize, more than a hundred times shorter odds.
So a large advertised number tells you nothing about how reachable it is, and comparing two games on their ceilings alone is comparing the wrong figure. Where the odds are published, the odds are the comparison.
Pooled jackpots are fed by more players than any single game's maximum win, and the prizes run higher. Nothing in that makes the trigger odds shorter. Where they are not published, treat the jackpot component as a prize of unknown price, and judge the game on its base return instead, which is the figure you are actually exposed to on every spin.
For the mechanism, see how a progressive jackpot actually works. For what the pool takes from the base game, see does the jackpot lower the RTP of the base game. Published rules-screen figures for individual games are in our game reviews.
UK Gambling Commission RTS 9. https://www.gamblingcommission.gov.uk/standards/remote-gambling-and-software-technical-standards/rts-9-progressive-jackpot-systems
GamblersGPT Nolimit City corpus, 62 of 64 released games publishing max win odds, compiled October 2026.
| Measure | Game | Odds | Ceiling |
|---|---|---|---|
| Shortest | Brick Snake 2000 | 1 in 98,000 | 8,110x |
| Second shortest | Nine to Five | 1 in 150,000 | 9,217x |
| Median of 62 | not applicable | about 1 in 15.3 million | not applicable |
| Longest | Tombstone Begins | 1 in 217 million | 20,000x |
| Biggest ceiling | Tombstone Slaughter | 1 in 189 million | 500,000x |
Because no major regulator requires it. RTS 9 requires the jackpot rules, the funding, the seed and the return to player to be disclosed. It does not require the trigger probability.
No. The trigger is random per qualifying spin. The pool is larger, so the prize is worth more, but the chance of hitting it on your next spin has not moved.
No, and this page keeps them apart on purpose. A maximum win is a fixed ceiling inside one game's own maths. A progressive jackpot is a separate pooled prize funded by players. The max win figures are used here only because they are published and jackpot odds generally are not.
Regulatory statements are sourced to UKGC RTS 9. Max win odds come from the GamblersGPT Nolimit City corpus compiled October 2026. Last reviewed October 15, 2026.