A very challenging game which is an extension of the classic 'Lights Out' puzzle. The goal is to click on the lights until you can get them all to be green. Clicking on a light will change its color, but also the color of all of the neighbor lights attached to it. The light colors cycle through green, yellow, and red, just like a traffic light. The puzzles are made from a grid of lights (of varying sizes depending on the settings) which are connected in randomized configurations. Source code available for download.

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