Lapistia

-- What kind of game is it? -- asked Caroline. Ilkesedar visibly tensed up when he saw this man. Libar, however, also tensed up, but he maintained a stoic expression.

“Pearl.” A card game that came to Erathia from Enluan. There, and in many other gambling establishments throughout the continent, it is assumed that you play against the dealer, but there is also a regular version for ordinary travelers.
He then explains the rules.
Card Values:
2 = 2
3 = 3
4 = 4
5 = 5
6 = 6
7 = 7
8 = 8
9 = 9
10 = 10
J = 10
Q = 10
K = 10
A = 1/11
Basically, it's blackjack, but since the game is not played against a casino, you can't split, double down, etc.