Pencil and Paper
There are a wide variety of games that can be played anywhere you go as long as you have a writing utensil and some paper. Boxes is a game that any age can enjoy. Take a sheet of paper and make a grid of ten dots across and ten down. Players take turns drawing a line between two adjacent dots. The winner is the one who completes the most boxes by drawing the line that closes the box. This is a game that can be enjoyed by younger children for its simplicity or by adults for the strategy involved.
Word Games
Word games are a nice option on long car trips since no playing pieces are typically required. Animal, Vegetable or Mineral (which is pretty much the same as Twenty Questions except for the first question) is suitable for any age to play. One player thinks of an object. The other players try to guess what it is by asking question. The first question is always "Is it an Animal, Vegetable or Mineral." All other questions are answered with a yes or a no. The questioning continues until one player guesses what the original player is thinking of.
Travel Games
I Spy is a classic game that is great to play on long car trips, or anywhere else. The first player chooses an object that they can see (on a car trip, the object will disappear quickly, but that's part of the game.) The first player says "I spy with my little eye something beginning with...", and they state the letter the object begins with. The other players continue trying to guess the object in turn until someone guesses correctly. That person will be able to choose the object for the next round.
Card Games
Card games can be played anywhere that you can find a deck of cards. You can choose from games like Snap, Go Fish or Old Maid for younger players or more advanced games like Rummy or Hearts for adults. There are other games, like Authors, that are suitable for all ages to play. To start, all the players take turns drawing a card until someone draws an ace. That person is the dealer. After the cards are dealt the first person ask for a specific card, such as the ace of diamonds, from a specific person. If the person has that card, she can ask for another card. The object of the game is to form books of four cards of the same rank. The winner is the player with the most books at the end of the game.