Dok, or "the struggle" refers to the universal struggle of good and evil in the world of Allfield. There are three or four levels of involvement, from the Pabla, or "Blind Game", up to Dok.
Dok is also a card game played in the world of Allfield. It is played with a deck of 48 cards with four suits: Heroes, Monsters, Treasures, and Mysteries. Cards in each suit from a value of 1 up to 12. Players lead with a card in a given suit, and the others have to follow suit and try to beat the value, or play and lose whatever they have. There are many many variations of the game and localized rules.
Dok is a different card game than Allfield, which is a game about Allfield, not a game played in the fictional world of Allfield.