Caravan (game)

Caravan is a card game designed by the developers of Fallout: New Vegas.

Inside of game
While traveling throughout the Mojave Wasteland, you will encounter different types of people who would love to play a game of caravan with you!

Outside of game
By acquiring the Collector's Edition of Fallout: New Vegas you will receive a deck of playing cards, that are custom, which you will be able to play a game of caravan with your friends. (It can also be played with standard cards, but it's preferred to play with these cards for a unique experience.)

Behind the scenes
The achievement name "Know When to Fold Them" is most likely an homage to the song "The Gambler" by Kenny Rogers, specifically the well-known lines: "You got to know when to hold 'em Know when to fold 'em; Know when to walk away, Know when to run."