Bomb and Shield*
Everyone chooses two people – one to represent a bomb and one to represent a shield – without revealing who they chose. At the signal, everyone runs away from their bomb and hides behind their shield, but without revealing who is their bomb and who is their shield. The game is best played outside because you will need a lot of space.
* Variation of a game from: Boal. Games for Actors and Non-actors, p. 132.