Fly the cave. Beat the clock.
Pilot a small ship up through a hundred caves, fighting gravity with thrust and a steady hand. Clocks tucked against the walls take time off your run, and the gold ones sit furthest off the line. Watch the fuel: the deep caves run longer than one tank, so you land on ledges cut into the wall to refuel. Set down slowly and upright, or you are wreckage.
Every pilot flies the exact same caves, so the leaderboards are a fair fight.