Here are a few games to get you started. For most games you need enough players to spread out comfortably around the edge of the parachute. Depending on the size of the parachute this could be anywhere between 15 and 50. One person every 1 - 3 yards around the edge is average. Remember that the circumference of a parachute is about 3 times its diameter.
Nothing here constitutes a recommendation and no responsibility for safety is accepted.
If you choose to use any of these games you do so at your own risk. For lots more games see the 'Teaching aids' below. This is not so much a game, more an essential starting point for parachute play. Get everyone to spread out the parachute and hold the edge, spaced out more or less evenly so they're standing in a circle. It will fill with air and rise up like a giant mushroom - or igloo.