The parts needed to assemble the robot perfectly fall from above onto the platform in the center. It then lowers, taking the robot with it, and is then replaced by another platform.
The teams have to construct a robot by hitting a switch to make the correct pieces fall onto the feet of the robot and keep building up. The pictures of the pieces rotate on a machine and the players have to take turns hitting the switch when the piece they need is in the middle of the rotating screen (arms, legs, and head); the players alternate whenever one of them hits the switch. The panel showing the piece required is lit up. If both teams finish constructing the robot at the same time, the game will end in a draw.
The winner's robot begins to move its arms and head as they do their victory animation.
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