Click anywhere to move forward. The faster you click, the faster you will go. Click above your plane to move up, and click below to move down. Avoid hitting red boxes - they slow you down in timed mode and kill you in death mode. -=-=-= Modes =-=-=- Timed mode - you try to get the fastest time. Death mode - try to survive for as long as possible. You can also change the difficulty - this changes how frequently boxes appear. When you are done, you get a grade out of 4. Gold (4/4) is the best.
A hexahedron is a six-faced 3D object (basically, a cube). Based on that one Pokemon olympics minigame from HGSS.