Fair Cribbage

Cribbage that can
prove it dealt fairly

The deal is locked in before you see a card.

Every hand is fixed before the game starts, and you can check afterwards that it was. No ads, no purchases, no account, and no connection to anything.

How the proof works Press kit

How it plays

Six cards, keep four

Real cribbage: the discard to the crib, the pegging, fifteens, runs, pairs, his heels and his nobs. Muggins if you want it, off by default. Three levels of opponent, and a stronger one thinks further ahead — it never gets better cards.

A cribbage board with two pegs, a cut card, and the running count. The hand at the bottom shows six cards with their suits.
The board during play

Learning

It shows its working

Every score comes with the reason. Not a number that appears, but the combination that made it and the cards it used. If you have played cribbage for forty years you can turn it off; if you are learning, it is the whole point.

The counting screen listing each combination that scored, with the cards it used and the points it was worth.
Every point, explained

Fair play

Fixed before the deal

Before the first card, the game commits to a random seed by showing you a hash of it. At the end it reveals the seed. Anyone can recompute the deal from it and check that the hash matches. The computer could not have known the cards, and neither could we.

The fairness screen showing the commitment hash, the seeds, and the position in the stream.
The proof

What is true today

  • No ads
  • No in-app purchases
  • No account, ever
  • No network connection at all
  • No review pop-up
  • Universal: iPhone and iPad

Not true yet: this is in development. There is no release date, no store page to link to, and no player numbers or review scores, because there are none. When there is a store page this line will say so.