Guided by a laying-down-to control tightly-flapping UFO, players take to the virtual skies, navigating through a busy simulation of aerial traffic. The core challenge lies in balancing the ascent of the craft with the need to avoid hazards. Players can make adjustments to climb, or lose height if too close to obstacles.
The flapping motion of the UFO, controlled in small increments by frequent button presses, goes hand-in-hand with strategy to clear obstacles without inhibiting progress. Hints of air resistance sometimes accompany obstacles that will be immediately hazardous if either UFO or these instances meet.