• Play games for a happy 21st birthday.happy birthday image by timur1970 from Fotolia.com
  
  Celebrate your 21st birthday by playing party games. In the United States, the 21st birthday represents a day that a person can legally drink alcohol. If you wish not to drink alcohol on your 21st birthday, you can still enjoy playing party games. If your party contains alcohol consumption, designate a sober driver.
  
  

Git'er Done

• Cut a piece of paper into small pieces, and write wacky and unpredictable tasks onto each small piece of paper. Place the tasks into a hat the birthday guests will draw from. Divide the guests into two teams, and designate a team leader for each team. Typically, the team leaders will have the loudest voice within the team. The team leader pulls the tasks for his team out of the hat. To start the game; the team leader will yell "git'er done" and when the team finishes the team leader yells "got'er done." For example, a task would read, "Line up all players on your team from longest fingers to shortest." Judges check, to verify, they have in fact completed the task. If so, team gets a point. If not, the team has to drink. This game is entertaining with or without alcohol, according to Party-games-etc.com.
  
  

Fuzzy Duck

• The game of Fuzzy Duck consists of drinking alcoholic beverages. This game sounds simple, but in fact, becomes harder the more people drink. Sit your party guests in a circle, and designate one person to start the game by saying "fuzzy duck." Play continues clockwise with each person repeating the phrase. Randomly anyone in the circle can say, "Does he?" This will change the direction of game play as well as change the saying from "fuzzy duck" to "ducky fuzz." If a player gets it wrong or takes too long, then she must drink, according to PartyPlan.co.uk.
  
  

Think and Drink

• This game plays similar to the Name Game. Select a leader for the game. The leader starts the game by shouting a famous person's name. The next player (to the right of the leader) shouts a name of a famous person whose first name starts with first letter of the previous person's last name. For example, the leader shouts "Steven Tyler", the next person shouts "Tina Fey." If a player shouts a person whose first and last name both start with the same letter, the play reverses. On their turn, players must drink the entire time they are thinking of a name. Single word names---Prince---or names that contain the word "the" will result in a forfeit, according to PartyPlan.co.uk.