Arm each team with a different colour can of silly string.
On the “go!” command, they have five minutes to “tag” as many Zombies (Adults in the room) with the silly string as possible before time runs out.
To do this it will be run as relay race when a player has tagged a zombie they run back to there team and give the silly string to the next player.
When time is up, tally how many Zombies are tagged with each colour of silly string.
The team who tagged the most wins.