A fun birthday game. Be the last to not let your balloon get burst.
Active. A lot of movement may be required.
2 or more players
Balloons and string - enough for all players
Divide the group into two teams. Tie the balloons to everyone's ankles. Say "go" and watch the teams trying to burst the other team's balloons first. The team with the last balloon wins. As your balloon is burst you withdraw from the game.