This is NOT a game, there's NO objective at all. It's part of my submission for a German coding contest. I think the UI is pretty nice, therefore I decided to share it on Scratch. The different components send different light signals depending on what light signals they receive from the previous layer, following pre-defined rules. They can be used to build a structure that transforms the input lights (torches) into output lights (LEDs). I originally wanted to use js canvas for the web interface, but then I came under time pressure (because of school) so I decided to use Scratch.
