There is a Legacy version here.

Low Gravity

Source GM Core pg. 172
As in normal gravity, bodies of great mass act as centers of gravity, but the force relative to the size of the body is less than in the Universe. The Bulk of all creatures and objects is halved, meaning creatures acclimated to normal gravity can carry twice as much and jump twice as high and far. Physical ranged attacks are possible up to the twelfth range increment (instead of the sixth). Creatures that fall in low gravity take no damage for the first 10 feet of a fall, and then take bludgeoning damage equal to a quarter of the remaining distance it fell.