The cog factory has cut back on it's workforce leaving only you in charge of sorting all the cogs used to make their machine. Your objective is to group the same colored cogs together into the sprocket spirals. Once three or more cogs of the same color are adjacent to one another, they will connect themselves to the machine in the background. The number of sprocket spirals increases as you progress through the game and the machine gets built. Think carefully about which cog you send down which spiral - plan ahead. You only have a limited time before the cogs get ejected from the cogregator.