Tap the game to open it fullscreen. On a computer, Esc exits; on a phone, use the ✕ button.

How to play

The buyer asks for an exact weight of silver. Tap the pieces to put them on or take them off the scales; when the sum matches the weight asked, the deal closes. Each deal has a time limit, and the later ones use three pieces. Close six deals with at most two failures.

The story behind it

The Vikings weighed silver on small scales and cut coins and jewellery into pieces (hacksilver). Arab coins, the dirhams, turn up by the thousands in Scandinavian hoards. The weights and the deals in the game are made up. Read the story in Caliphate silver, pocket scales: how Arab coins ended up in Viking hoards.