Do we play at the same time?

No, and that is the trick. Their run is recorded, so a duel works across time zones and sleep schedules — the ghost is a replay, not a live opponent.

Can I challenge someone who has no account?

Yes. That is what the link is for: it renders the challenge, the score to beat and the sign-up in a single page.

Why the ten-second clock?

So the duel measures what you know, not how fast you can search. The clock only runs in competitive modes — the solo Ladder gives you as long as you like.

All Play modes

Ghost Duels

Race a real person's recorded run, question for question.

A ghost duel replays a run somebody already finished, against you, live. You get their exact questions and their ghost climbs the rail beside you as you answer. Beat their banked pot and the duel is yours. You can be matched with a stranger from your league tier, or turn your own finished ladder into a link and dare one specific person — and that link opens for them whether or not they have ever heard of Problyx.

How it works

Finish today's ladder to create a challenge, or take a matchmade rival from your tier.
Play the exact questions they played — ten seconds each — while their ghost climbs beside you.
Beat their banked pot to take the duel.

The rules that matter

Up to ten duels a day.
Challenge links are public — anyone can open one and see the score they are being dared to beat before signing up.
Ten seconds per question. No PP at stake: ghost duels play for league points and the record.

Questions

Do we play at the same time?: No, and that is the trick. Their run is recorded, so a duel works across time zones and sleep schedules — the ghost is a replay, not a live opponent.
Can I challenge someone who has no account?: Yes. That is what the link is for: it renders the challenge, the score to beat and the sign-up in a single page.
Why the ten-second clock?: So the duel measures what you know, not how fast you can search. The clock only runs in competitive modes — the solo Ladder gives you as long as you like.

Play Ghost Duels

It is free, it runs in the browser, and it costs one email address.

Start playing Go to your games

The other modes

Daily DropThree settled markets, one live pick, sixty seconds.How it works The LadderDouble or bank. One miss burns the pot.How it works Bonus GamesSpin for a theme, or roll for difficulty.How it works Staked DuelsBoth sides put PP in escrow. Winner takes the pot minus the burn.How it works King of the HillOne call per round. Miss one and you are out.How it works Weekly BossOne free pick. One real event. One week of waiting.How it works Crew WarsThirty of you against thirty of them. Every point is an attack.How it works ArenaBuy in, answer five, take a share of the pot.How it works