i love it!!! the idea is super good in my opion! yes, it can be pretty hard, but this makes you scratch your head and think: "if i take this color first and then this color, i will be able to pass when i re-color" sometimes, you just get tricked because there was one missing color place, so you needed to re-color right before you take teh new color. this game is really good, and the game was fun. :)