As old energon patches die, new energon crops are born into the world. Chests Chests contain weapons, armor, and items a robot can use in the world. Once you have collected enough energon ore, you should go back to your safezone. In the middle of your safe zone is your refinery. If you face your refinery, all of your energon crystals will be refined into energon cubes, which you can use at any time to replenish your energy.
Every robot is equipped with a sonar capability that allows it to perceive invisible objects.
Teleporters, chests, and other robots can all potentially be invisible. Press 's' to send a sonar ping. A battle shield will descend upon the pair of you as you duel. This prevents other robots from trying to interfere in your battle. If you win the duel, you'll receive experience and perhaps one of the robot's possessions or skills.