Dark Strokes: The Legend of the Snow Kingdom [Collector's Edition]
This is a very good casual point-and-click adventure!
Though the story is cliché and the stereotypical characters can be grating (the English voice acting is very bad), the game is consistently loyal to its fairy-tale trimmings. It's long, with plenty of things to do, multiple locales, many beautifully drawn scenes, and nice little corners of gameplay and design.
There aren't too many hidden-object scenes or puzzle mini-games, but those that are there are well-implemented and fine.
A tight production has allowed for this game to be more than a sum of its parts. It's not the best of the genre, but it's consistent and satisfying.
There are in-game achievements but they are not linked with Steam.