Mini Sumo thumb|Mini Sumo match.In the Mini Sumo class (also called Sumo 500g class) robots have a weight limit of up to 500 g and are limited to 10 cm x 10 cm, with no height limit. Once the fight starts, the robot is allowed to expand its size.
mini sumo thumb|mini sumo matchin the mini sumo class (also called sumo 500g class) robots have a weight limit of up to 500 g and are limited to 10 cm x 10 cm with no height limit once the fight starts the robot is allowed to expand its size