Your task in this physics based puzzle game is to build mechanisms and turn the lamps on. Drop the cogs in the place to make the light bulb rotate and work. You have to use all the cogs that are available in given level (you can see all of them in the bar at the top of the screen). You can also collect the stars for bonus points. Use YOUR MOUSE to position the cog and click LEFT MOUSE BUTTON to drop the cog. good luck!