It's only a vague idea and I'm still not quite sure, but I'm thinking about to include some poker mechanics into the game I'm developing. For example, you could win extra points if you turn over in a row a three of a kind, a flush or a full house.
The idea of a river sounds pretty good, but not for this game because it's a storytelling horror game set in a cemetery. A single card would represent a grave, unless you have a poker hand: a pair are two lovers buried together; a full house is a family with their three children; a poker is a mausoleum... I'm still thinking about it.
Thanks for commenting! :)