Sprocket 2 is a Puzzle/Physics sim, expanding greatly on the original.

You can freely place sprockets and chains to transfer rotational energy.

Your goal is to spin all four of the outer gears. 

.. Or make a chain eating machine.

.. Or achieve perfect Rotation.

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Controls

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Left Mouse to Interact with Buttons/Place/Move things

Mousewheel to Zoom the Camera

Right Click to Center the Camera