Tag and Tag Variations
Tag is a classic kids game in which one person is the tagger until he catches or tags another player. You can try some variations on tag to make it more chaotic, such as having numerous taggers, playing freeze tag (in which the tagged person must freeze until another player unfreezes him) or having all the players move in a certain way instead of running (crab walking, crawling, hopping). Another fun variation is snake tag, in which the tagger joins hands with the first person he tag, who then works with him to tag more people and create a snaking line of players who are all "it."
All My Friends and Neighbors
All My Friends and Neighbors is a fun getting-to-know-you game that can inspire a lot of chaos with the right group. Players sit in a circle with one person in the middle who announces "All my friends and neighbors..." finishing with a common trait such as "have red shirts on" or "like ice cream." The players who identify with that trait must jump up and switch places as the player in the middle tries to find a seat for herself.
Musical Chairs
Musical chairs is a fun kids game in which children circle a group of chairs as music plays, then all scramble to get a seat when the music stops. A fun, fast-paced variation on musical chairs is to have one player stand in the center of a circle of chairs with one empty seat and to try to sit down as the other players try to prevent the player in the center from sitting down by moving from chair to chair.
Red Light, Green Light
Red Light, Green Light is another classic kids game that can be a lot of fun and cause some good-natured chaos. One player is the traffic light, and the others must stand in a line 10 feet away from her. The traffic light turns her back and calls out "green light" to signal that the players can start moving and "red light" for them to freeze. The traffic light tries to catch as many players as possible moving after red light, and the players try to be first to reach the traffic light.