Dark Parables: The Swan Princess and the Dire Tree [Collector's Edition]
This is Dark Parables #11, a step up in terms of presentation for a series that already been gorgeous, but is slightly off because of obtuse point-and-click puzzles and an incomprehensible story. There is a swan princess and a dire tree and I'm still not sure why they are related. But I'm a sucker for these drawings, animation, and music, so this is very easy to recommend.
One small complaint about the voice acting -- there's this one guy who brings the whole thing down. He almost sounds like a placeholder that never got replaced.
Also note that this is the first game in the series with Steam-linked achievements.