A green simulation apparatus having a configurable upper surface with a changeable contour may comprise a covering forming the upper surface and a covering support assembly configured to support the covering. The support assembly may comprise a plurality of movable positioning elements having the covering resting thereon and positioned in an array extending in a reference plane and movable along axes extending substantially perpendicular to the reference plane. The support assembly may comprise a movement actuator configured to move at least one of the positioning elements independently of other positioning elements in the array.