My brother and I were at Williams College waiting for our sister's soccer clinic to end. We were on our way up to Maine for vacation and we had our cameras with us. We found some soccer nets, and we also found a frisbee on the ground.
We invented frisbee shootout.
Step 1: Number of Players
The minimum number of players that you need is two. My directions are for two people, and if you want to add more people; that is up to you to improvise.
Improvisation is the essence of inventing a sport.