Jackpot PKOs have gone from an obscure European experiment to the most debated format in online poker in a matter of weeks. GGPoker's Ocean KO series has just produced the biggest tournament ever played, while Card Player published an opinion piece on October 13 arguing that these "lottery-style" knockouts are taking poker "to uncomfortable places." The argument deserves a proper look, because the format affects how tournament prize pools are built, how much variance you absorb, and ultimately how much value you get for your buy-in.
This article lays out how the format works, what supporters and sceptics are saying, and how to think about it if you play online tournaments for real money.
How a jackpot PKO works
A standard progressive knockout splits each buy-in into a prize-pool portion and a bounty portion. When you eliminate a player, you collect half of their bounty immediately and the other half is added to your own bounty. A jackpot PKO changes the payout step. According to Card Player's description, half the buy-in goes to the prize pool and half to the bounty, but when someone is knocked out, a random multiplier is applied to the bounty instead of a simple split. The author's example is that a $5 bounty might pay anything from $2 to $2,000.
The format is reported to have originated with the European operator Winamax. Its "Space KO" version, launched in December 2024, applies multipliers from 0.4x to 100x, with the top multiplier hitting roughly once in every 1,000 bounty awards. GGPoker has since added its own version with multipliers up to 400x. Card Player's piece notes that, when low multipliers hit, the operator holds the difference in a separate pool for eventual high-multiplier winners, which means the visible prize pool can be smaller than the total buy-ins paid into the tournament.
The case for the format
Supporters see jackpot PKOs as the natural next step in a long evolution toward formats that mix skill with a visible shot at a huge payout. Card Player cites Nick Jones of Poker Industry Pro calling the format "one of the most pivotal new poker products we've seen," and a post from Standard Backing on October 5 predicting a major shift to the format on GGPoker within 6 to 18 months, with PokerStars and others following. That prediction compares the change to the earlier move from non-bounty tournaments to PKOs.
The evidence for demand is hard to ignore. GGPoker's $5 Ocean KO Opener attracted 420,084 entries and a prize pool above $1.9 million, topping PokerStars' 2015 record of 253,692. Our report on the record has the details. On Winamax, a player known as "oldepaso68" won €922,104 in bounties, including one €838,000 knockout, in a €100 Space KO that paid roughly €5,000 for first place. Stories like that are marketing gold: they show that a small buy-in can lead to a life-changing result.
There is also a competitive logic. Online poker has long struggled to retain casual players who find standard tournaments slow and discouraging. Spin and Go formats, with their random prize multipliers, solved part of that problem. Jackpot PKOs apply the same hook to multi-table tournaments, giving a recreational player a reason to stay engaged even when they have a short stack.
The case against
Card Player's Mo Nuwwarah, a tournament player with over $1 million in career earnings and a 2024 WSOP bracelet, makes several points worth considering.
Duration matters. Spin and Gos are quick, so a poor multiplier is followed almost immediately by another game. Jackpot MTTs can keep you playing for hours in a prize pool that may be smaller than the total money paid in. The author's concern is that players can be stuck for long stretches in a shrunken pool.
Rake incentives. The author's "tin foil hat" worry is that if players accept smaller prize pools than they paid for, operators may feel encouraged to raise rake further. That is a hypothesis rather than a documented fact, but it is a reasonable question to ask any time the pricing of a product becomes harder for players to see.
Longshot culture. He links the format's rise to a broader appetite for longshot gambling, citing same-game parlays and prediction-market contracts. Poker, he suggests, is being pulled toward the same type of low-probability, high-payout product.
Skill and meritocracy. The author's counterpoint is that the competitive side of poker will keep enough players engaged to stop the format taking over. In his experience, the most casual gamblers tend to play cash games, while tournament regulars are drawn to the strategic contest. He is also candid that he may be wrong, and that jackpot tournaments are hard to replicate in live games.
Where the truth probably lies
It helps to separate three questions that often get blended together.
First, is the format popular? On current evidence, yes. A record field of 420,084 for a $5 event is the strongest data point anyone could ask for. Popularity at launch does not guarantee it will last, but novelty plus a strong promotional push is exactly how earlier formats such as mystery bounties and PKOs took off.
Second, is it good for skilled players? That depends on your style and bankroll. Skilled regulars can profit from large, soft fields, but a jackpot multiplier moves a bigger share of the equity into rare events. If the top multiplier lands about once in a thousand knockouts, a lot of your expected value sits in a tail you may never reach in a normal month of play. That is a variance and bankroll problem as much as a skill problem. Our bankroll management guide is essential reading before you commit.
Third, is it a fair product? Here the answer depends on transparency. The right questions to ask are: what is the rake, what percentage of buy-ins reaches the visible prize pool, how is the jackpot reserve funded, and what happens to the unallocated money if multipliers run low? Operators should publish this clearly. Where they do, players can make informed choices. Where they do not, caution is justified.
Practical advice for players
If you want to try jackpot PKOs, treat them as a high-variance side dish rather than the core of your tournament schedule.
- Start small. The cheapest events let you learn the dynamics without risking meaningful money.
- Read the payout rules. Look for the multiplier distribution and how the jackpot pool is funded.
- Adjust your strategy. Bounties are worth more than their face value, so ranges widen, but not infinitely. Revisit your pot odds and equity intuition, and use the poker odds calculator to check marginal calls.
- Mind your bankroll. Plan for long losing runs.
- Compare sites. Rewards and rakeback can offset the extra cost, so look at rakeback terms before you choose where to play.
For readers outside regulated markets, our guides to the best offshore poker rooms and tournament options cover where big-field series are running.
What happens next
Other operators are watching. According to industry reports, Betclic has launched a similar format called Smash Knockout, and iPoker is developing a Progressive Mystery Bounty product. There is no guarantee that any of these will match GGPoker's reach, but it suggests that jackpot-style bounties are becoming a standard feature of the online tournament menu.
The debate in Card Player is a healthy one. A format that takes a record number of entries should not be waved away by purists, but neither should concerns about prize-pool transparency be dismissed as nostalgia. The sensible position for players is to stay curious, demand clear rules, and keep their own risk limits firmly in place. Poker has absorbed bounties, spin-and-gos, and mystery formats before. Whether jackpot PKOs join them as permanent fixtures or fade as a novelty will be decided by the players, one buy-in at a time.