The game is played using humanoid robots. The maximum size of the robots is $H. The maximum weight of the robot is $G

There are one category of robots (kid size) depending on their height and the maximum foot dimension.

The height $H of the robot is defined as the maximum distance between any part of the robot, excluding its arms, and the ground when the robot is fully extended.

The maximum foot dimension $D is defined as the maximum distance of any two points on any foot of the robot. Some examples are shown in the Figure below :

The length of the arms must be limited such that they cannot reach below the knees when the robot is in a standing posture.

The robot must be limited in its kinematics to actions that are equivalent to human kinematics.

The sensors on the robot must be equivalent to the human senses of sight, sound, touch, hearing, taste, proprioception, balance, and acceleration.

All sensors must be passive, that is they are not allowed to emit signals such as infrared, ultrasound, or laser pulses.

The mode of locomotion of the robot must be bipedal walking or running.

Each robot must have the ability to fully independent locomotion, sensing, and processing. That is, all actuators, motors, power, computing, and sensing mechanisms must be incorporated into the robot.

Each robot must be fully autonomous, that is, it must perform its own control decisions.

Robots may use black and white colouring without restriction. Other colours may be used so long as they are deemed by the rules committee to be sufficiently different from reserved colours, specifically ball yellow, marker red and marker blue.

A robot must not have in its construction anything that is dangerous to itself, another robot, human operators, or spectators.

During the competition, coaches are not allowed to assist participants. Any assistance from a coach will result in the participant's disqualification.