Cyvasse is a game from Volantis. The players move pieces across a board of alternating coloured squares. There were ten different pieces, each with its own attributes and powers. 
The game came to Dorne by a trading galley at Planky Town. The orphans had spread the game while traveling the Greenblood and soon the Dornish court had learned to play the game.
Myrcella Baratheon learned the game from her betrothed Trystane Martell when she came to live with him in Dorne.