How about a nice relaxing game? The game called Knots is a series of puzzles in which you are challenged to move tiles around to reveal continuous outlines, revealing loops that can take any shape. As you’d expect, they start out simple and become harder as you go. Level eight presents the above mess that you rearrange by clicking a tile and then its destination to reveal this image.
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I don’t know how many levels there are, since I haven’t made it to the end yet, but there are at least 32, and somewhere along the way, you are confronted with more than one shape of the same color. You can turn the music off with a button in the lower left. -via Metafilter
Source: neatorama