Ticket to Ride Map Collection: Volume 6 – France & Old West includes a double-sided game board that features France on one side and the western half of the United States on the other.
In the France half of this expansion, 2-5 players collect train cards and claim routes in order to complete tickets in hand, but most of the tracks on the board aren't colored! Each time that you draw cards, you must take a colored tile that's 2-5 train cars long and place that tile on an empty track bed. Once you've done this, any player can claim that route by discarding the appropriately colored cards from hand, as in any other Ticket to Ride game. (Single-length routes are already colored, and the map contains a number of gray-colored ferry routes.)
In the Old West half of the expansion, 2-6 players start the game by choosing (in reverse player order) a starting location for one of their three city pieces. The first route that a player claims must have this city as one of the route's two endpoints, and each subsequent route claimed must connect to that player's existing network.