These puzzles are a fun way to pass time and relax. The mini puzzles are a great warm up and easy to complete in just an hour or so. These puzzles have a unique challenge to them because the colors are slightly similar and can be a bit challenging to figure out where the pieces go, a piece in the wrong place affects the entire puzzle. However, once you get the pieces in it's spot, it's satisfying and addicting to find the next piece. Also, the puzzles reveal a message when it's completed and it's lots of fun.