The games are divided into two categories: the Power Beam Challenge and the Tether Challenge. In the Power Beam Challenge, each team designs and builds a climber (a machine capable of traveling up and down a tether ribbon). The climber must carry a payload. Power will be beamed from a transmitter to a receiver on the climber. Each climber must travel to a height of 50 meters traveling a minimum speed of 1 meter per second. The Tether Challenge is to help develop very strong tether material for use in various structural applications.