Flying different formations under your opened parachute.
Not everybody's cookie.
Skydivers tend to play in freefall. Under canopy they tend to need their
space. Especially when landing.
A selected group of skydivers have discovered the
joys of flying together. Exiting the jump plane, opening their parachute
immediately and looking for each other. Flying together and building different
formations under their canopy.
In rotation you play with 3 other friends (well, not necessarily friends,
other jumpers also suffice) building a stack of parachutes (within that
same 30 seconds). Then the one on top moves down as quickly as possible.
He joins the crowd at the bottom, the next one on top then rotates down.
You can play with 3 other friends in the air building different formations
from a predefined set. After exiting the plane you have 30 seconds to
build the first formation. Then you have 90 seconds to complete as much
formations as you can.
Alternatively, you can play in a group of eight. The trick here is to
build one predefined formation as quickly as possible. Under time pressure
to build just one formation, people tend to be a bit more enthusiastic
when flying and docking. Creating some spectacular views for spectators.