The answers to Polly's questions become clues which allow the user to determine which of the Biosphere's five environments she has hidden a Mission Clue or Invention Points in. There are several airlocks which Polly will only open if the user correctly answers a biology or geology question. If the energy level becomes completely depleted, the Explorer crashes to pieces and must start over. However, the energy level can be increased with twinkling force shields, located throughout the underground tunnels. Every time the probe bumps into the walls of the maze, it loses increments of energy. The probe has a limited amount of energy, though. The user moves the around the maze by pressing the right, left, and up arrow keys on the keyboard. Since Professor Spark's Biosphere, a geodesic dome containing a closed ecological system, is too delicate to be entered, the user must fly one of several remote-controlled probes called 'Explorers' through a cavernous maze to reach it.
