Players must guide a micro battery through a maze to charge four chips. The battery holds a limited amount of energy, and it must return to the charger once that energy is running low. The maze is filled with zaps that can cause damage to your battery, reducing its total energy. If the battery's energy is fully depleted, it'll be destroyed.
The battery's total energy is enough to charge two chips.
In all possible mazes, there will always be a locked chip that the player can unlock by collecting a key.