As Emeraldfool just said though, this may be a medieval style period, but it isnt THE medieval period.
I think having similar games to RL is great, but just dont name them after RL games. E.G. the chess game that is mentione in game. Should that really be there?
I can imagine 'Yulbarfinger' would be played by rolling D11s twice to start you off then choosing between rolling another D11 (hit) or not bothering (stick) maybe even have the ability to split and buy and stuff like that