i have now beaten the entire game, every level, every mosaic, every achievement, every gold crown.
this is the greatest picross game of all time. topping this would be insanely difficult, from the way it actually challenges you to not use hints to the pieces themselves being possible without guessing and you can tell exactly what theyre supposed to be as you make it. this game is fantastic. definitely worth the money, i got 95.1 hours in it according to steam.