Divide your group into two teams. In the middle of a rectangular playing area, set up a makeshift wall that is high enough that the teams can’t see over it (approx 1 metre high). You will need 3-4 soft balls.
Teams lay low on either side of the wall, and attempt to avoid being hit by soft balls being thrown over by the opposite team.
You can either permit moving or not. If someone is hit, they’re out and leave the area. If they catch a ball, they’re safe.
The last person remaining wins it for the team.