In Robot Factory your goal is to operate the terminal of a robot-making machine and create as many robots with as few errors in the given time. You control production with your keyboard's arrow keys.

At the front, you see a blueprint of the robot you need to make as well as three tubes that send up various parts.

When a needed part of a robot raises from the left tube, you need to press the left arrow key. If the part raises from the right tube, then you need to press the right arrow key. And if the part raises from the middle tube, then you need to press the down arrow key. A tube shakes momentarily before a robot part appears (so keep a close eye on the tubes!)

If an unneeded part comes up from a tube (either incorrect for the robot model or a duplicate part), then a buzzer sounds and a stop icon appears. When this happens you do not want to hit the corresponding arrow key. Hitting the corresponding arrow key results in an incorrect selection.

On either side of each tube you may notice yellow dashes. These dashes gauge your reaction time. You want to press the correct arrow key for each correct part when the yellow gauges are full for maximum points.

Scoring 

If the correct response is entered in less than 210 milliseconds (ms), you net 500 points. If the correct response is entered between 210 and 1100ms, you net 100-500 points. If the correct response is entered in more than 1100ms, you net 100 points. You earn 750 points for every incorrect part avoided. You also earn an additional 3000 points for every robot created. The speed at which the parts appear is based on your performance in the previous game.