Have each player number off. An option is to have more than one person per number.
After everyone has a number, have each player group together in a bunch.
One person starts with a ball in the center of the group
The person with the ball throws the ball up while yelling a number.
Everyone runs in all different directions away from the bunch except for the person(s) whose number is called.
The person(s) whose number is called catches the ball and yells "Spud!" As soon as this is yelled, everyone has to freeze.
The person with the ball is allowed to take 3 giant steps toward any player.

Every group member must find a partner of approximately equal height and weight, if possible.  The partners will lock arms with their backs to one another.  With arms remaining locked at all times, the partners will sit down on the ground, kick their legs out straight, and try to stand back up.  Then groups of four will try the same thing.  Then groups of eight, sixteen, and eventually, the entire group together.  This is the perfect activity to begin a tr

Form groups of 6-12 people
Have players create events and write them down on small sheets of paper. Be sure that they don't share these ideas aloud with anyone
Creativity is a MUST for this game :)
Here are some examples of events:

Being attacked by a shark while you're fishing
Hitting a home run that wins the World Series
Winning the lottery
Going on a first date

After everyone is done writing, collect all of the papers and put them in a hat.
Whithin each group, choose 3-4 people to act for each round.
Players will randomly draw from the hat