Since the LA team taught us this simple multiplayer stealth game, our whole summer school - staff and students - have become obsessed. The object of the game is to avoid getting your hand slapped in one move or less. We've found the funnest way to play is in a big group on a moving subway! Here are Luke and James having a showdown in our apartment.
Try it at home! To start, everyone stands in a circle, facing inward, and bows as the chosen leader says, "Ninja." Immediately everyone springs into a ninja pose of their choosing. The player to the left of the leader begins the game by making one offensive move, trying to hit the hand of the player on either side of him. Whoever he attempts to hit must avoid the attack, only using one move. The remaining players must stay frozen until it's their turn or someone else tries to hit them. You're out if your hand is hit, you move more than once, or you move when it's not your turn (and you're not being attacked).
