To make the robot in the movie, first they used a small puppet and had the puppeteers under the floor controlling it through sticks. To make the huge robot, they had a "bam bot" for ramming through walls and windows, a technical robot that had all the circuitry to make the antennae move and the nose to steam, and a version where there were only the feet and the body (they would later animate the arms and legs.) The robot was more mechanics than electronics. See more...
Popular blog posts:
Other great sites
Deliberate "mistake": The turn count for Lisa's stay in the Cryogenic Sleep Chamber is off. The card reads she should be there for 5 turns. 'Turn' can either represent a single move made by either Danny or Walter, or a complete game cycle where both Danny and Walter have made a move. If we count the turns by player, it comes to 8 and she's awake 2 turns too late as it should have happened at the start of 6th. If we count both players' moves together as a start of a turn, then she's awake 2 turns too early as its turn 4 and not turn 6. It seems obvious from showing us the shower suddenly start up that this is the correct point in the film they wanted her awake, so it's unlikely she was actually awake off-camera during the Astronaut's arrival and we just didn't see.