In "Flag Down" a team of contestants play against a team of guards, each of them has a pole with a flag on top.
When the game begins, half of each group has to try and grab the other team's flag, while the rest of them have to try to protect their own flag and hold their pole upright. The first team to pull down their opponents' flag wins.
If the team of contestants pull down the guard's flag first they win, and move onto the next round. But if the guards grab the contestants' flag first they lose, and are out of the game.