That can be, for example: 1. As the name suggests, "Red K" is a group of two red K's. Of course, you can only guess who has the red K by experience or luck in playing cards.
2, "Teasing the Landlord" is a three-person game, with two farmers VS one landlord. It's quite cool
3, < 4 > < 6 >. If the cards are named, 4 is 4 players playing 4 decks, and 6 is 6 players playing 6 decks.