A supplementary definition of Eco Robot is described below:
Eco Robot has only one actuator that energy can be pre-stored. This
actuator with pre-stored energy must be used only for steering control.
Other mechanisms/actuators can be used in Eco Robot if their energies
are not pre-stored at the beginning of the game. However after the game
starts, these mechanisms/actuators are allowed to store and/or use
energy from external or surrounding sources for examples from Hybrid
Robot, from game field/structure, etc. External energy can be light,
sound, wind, magnetic, and etc.